def draw_nodes(self, net=None, node_colors={}, node_radius={}):
if not net:
net = self.net
if type(node_colors) == str:
node_colors = {node: node_colors for node in net.nodes()}
nodeCircles = []
for n in net.nodes():
c = NodeCircle(tuple(net.pos[n]), node_radius.get(n, 8.0),
color=node_colors.get(n, 'r'),
ec='k', lw=1.0, ls='solid', picker=3)
nodeCircles.append(c)
node_collection = PatchCollection(nodeCircles, match_original=True)
node_collection.set_picker(3)
self.axes.add_collection(node_collection)
return node_collection
def draw_nodes(self, net=None, node_colors={}, node_radius={}):
if not net:
net = self.net
if type(node_colors) == str:
node_colors = {node: node_colors for node in net.nodes()}
nodeCircles = []
for n in net.nodes():
c = NodeCircle(tuple(net.pos[n]),
node_radius.get(n, 8.0),
color=node_colors.get(n, 'r'),
ec='k',
lw=1.0,
ls='solid',
picker=3)
nodeCircles.append(c)
node_collection = PatchCollection(nodeCircles, match_original=True)
node_collection.set_picker(3)
self.axes.add_collection(node_collection)
return node_collection
class CameraDisplay:
"""
Camera Display using matplotlib.
Parameters
----------
geometry : `~ctapipe.io.CameraGeometry`
Definition of the Camera/Image
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
ax : `matplotlib.axes.Axes`
A matplotlib axes object to plot on, or None to create a new one
title : str (default "Camera")
Title to put on camera plot
norm : str or `matplotlib.color.Normalize` instance (default 'lin')
Normalization for the color scale.
Supported str arguments are
- 'lin': linear scale
- 'log': logarithmic scale (base 10)
cmap : str or `matplotlib.colors.Colormap` (default 'hot')
Color map to use (see `matplotlib.cm`)
allow_pick : bool (default False)
if True, allow user to click and select a pixel
autoupdate : bool (default True)
redraw automatically (otherwise need to call plt.draw())
autoscale : bool (default True)
rescale the vmin/vmax values when the image changes.
This is set to False if `set_limits_*` is called to explicity
set data limits.
antialiased : bool (default True)
whether to draw in antialiased mode or not.
Notes
-----
Speed:
CameraDisplay is not intended to be very fast (matplotlib
is not a very speed performant graphics library, it is
intended for nice output plots). However, most of the
slowness of CameraDisplay is in the constructor. Once one is
displayed, changing the image that is displayed is relatively
fast and efficient. Therefore it is best to initialize an
instance, and change the data, rather than generating new
CameraDisplays.
Pixel Implementation:
Pixels are rendered as a
`matplotlib.collections.PatchCollection` of Polygons (either 6
or 4 sided). You can access the PatchCollection directly (to
e.g. change low-level style parameters) via
`CameraDisplay.pixels`
Output:
Since CameraDisplay uses matplotlib, any display can be
saved to any output file supported via
plt.savefig(filename). This includes `.pdf` and `.png`.
"""
def __init__(
self,
geometry,
image=None,
ax=None,
title="Camera",
norm="lin",
cmap="hot",
allow_pick=False,
autoupdate=True,
autoscale=True,
antialiased=True,
):
self.axes = ax if ax is not None else plt.gca()
self.geom = geometry
self.pixels = None
self.colorbar = None
self.autoupdate = autoupdate
self.autoscale = autoscale
self._active_pixel = None
self._active_pixel_label = None
# initialize the plot and generate the pixels as a
# RegularPolyCollection
patches = []
for xx, yy, aa in zip(
u.Quantity(self.geom.pix_x).value,
u.Quantity(self.geom.pix_y).value,
u.Quantity(np.array(self.geom.pix_area))):
if self.geom.pix_type.startswith("hex"):
rr = sqrt(aa * 2 / 3 / sqrt(3))
poly = RegularPolygon(
(xx, yy),
6,
radius=rr,
orientation=self.geom.pix_rotation.rad,
fill=True,
)
else:
rr = sqrt(aa)
poly = Rectangle(
(xx - rr / 2., yy - rr / 2.),
width=rr,
height=rr,
angle=self.geom.pix_rotation.deg,
fill=True,
)
patches.append(poly)
self.pixels = PatchCollection(patches, cmap=cmap, linewidth=0)
self.axes.add_collection(self.pixels)
self.pixel_highlighting = copy.copy(self.pixels)
self.pixel_highlighting.set_facecolor('none')
self.pixel_highlighting.set_linewidth(0)
self.axes.add_collection(self.pixel_highlighting)
# Set up some nice plot defaults
self.axes.set_aspect('equal', 'datalim')
self.axes.set_title(title)
self.axes.set_xlabel("X position ({})".format(self.geom.pix_x.unit))
self.axes.set_ylabel("Y position ({})".format(self.geom.pix_y.unit))
self.axes.autoscale_view()
# set up a patch to display when a pixel is clicked (and
# pixel_picker is enabled):
self._active_pixel = copy.copy(patches[0])
self._active_pixel.set_facecolor('r')
self._active_pixel.set_alpha(0.5)
self._active_pixel.set_linewidth(2.0)
self._active_pixel.set_visible(False)
self.axes.add_patch(self._active_pixel)
self._active_pixel_label = self.axes.text(self._active_pixel.xy[0],
self._active_pixel.xy[1],
"0",
horizontalalignment='center',
verticalalignment='center')
self._active_pixel_label.set_visible(False)
# enable ability to click on pixel and do something (can be
# enabled on-the-fly later as well:
if allow_pick:
self.enable_pixel_picker()
if image is not None:
self.image = image
else:
self.image = np.zeros_like(self.geom.pix_id, dtype=np.float)
self.norm = norm
def highlight_pixels(self, pixels, color='g', linewidth=1, alpha=0.75):
'''
Highlight the given pixels with a colored line around them
Parameters
----------
pixels : index-like
The pixels to highlight.
Can either be a list or array of integers or a
boolean mask of length number of pixels
color: a matplotlib conform color
the color for the pixel highlighting
linewidth: float
linewidth of the highlighting in points
alpha: 0 <= alpha <= 1
The transparency
'''
l = np.zeros_like(self.image)
l[pixels] = linewidth
self.pixel_highlighting.set_linewidth(l)
self.pixel_highlighting.set_alpha(alpha)
self.pixel_highlighting.set_edgecolor(color)
self.update()
def enable_pixel_picker(self):
""" enable ability to click on pixels """
self.pixels.set_picker(True) # enable click
self.pixels.set_pickradius(
sqrt(u.Quantity(self.geom.pix_area[0]).value) / np.pi)
self.pixels.set_snap(True) # snap cursor to pixel center
self.axes.figure.canvas.mpl_connect('pick_event', self._on_pick)
def set_limits_minmax(self, zmin, zmax):
""" set the color scale limits from min to max """
self.pixels.set_clim(zmin, zmax)
self.autoscale = False
self.update()
def set_limits_percent(self, percent=95):
""" auto-scale the color range to percent of maximum """
zmin = self.pixels.get_array().min()
zmax = self.pixels.get_array().max()
dz = zmax - zmin
frac = percent / 100.0
self.autoscale = False
self.set_limits_minmax(zmin, zmax - (1.0 - frac) * dz)
@property
def norm(self):
'''
The norm instance of the Display
Possible values:
- "lin": linear scale
- "log": log scale
- any matplotlib.colors.Normalize instance, e. g. PowerNorm(gamma=-2)
'''
return self.pixels.norm
@norm.setter
def norm(self, norm):
if norm == 'lin':
self.pixels.norm = Normalize()
elif norm == 'log':
self.pixels.norm = LogNorm()
self.pixels.autoscale() # this is to handle matplotlib bug #5424
elif isinstance(norm, Normalize):
self.pixels.norm = norm
else:
raise ValueError('Unsupported norm: {}'.format(norm))
self.update(force=True)
self.pixels.autoscale()
@property
def cmap(self):
"""
Color map to use. Either a name or `matplotlib.colors.ColorMap`
instance, e.g. from `matplotlib.pyplot.cm`
"""
return self.pixels.get_cmap()
@cmap.setter
def cmap(self, cmap):
self.pixels.set_cmap(cmap)
self.update()
@property
def image(self):
"""The image displayed on the camera (1D array of pixel values)"""
return self.pixels.get_array()
@image.setter
def image(self, image):
"""
Change the image displayed on the Camera.
Parameters
----------
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
"""
image = np.asanyarray(image)
if image.shape != self.geom.pix_x.shape:
raise ValueError("Image has a different shape {} than the"
"given CameraGeometry {}".format(
image.shape, self.geom.pix_x.shape))
self.pixels.set_array(image)
self.pixels.changed()
if self.autoscale:
self.pixels.autoscale()
self.update()
def update(self, force=False):
""" signal a redraw if necessary """
if self.autoupdate:
if self.colorbar is not None:
if force is True:
self.colorbar.update_bruteforce(self.pixels)
else:
self.colorbar.update_normal(self.pixels)
self.colorbar.draw_all()
self.axes.figure.canvas.draw()
def add_colorbar(self, **kwargs):
"""
add a colobar to the camera plot
kwargs are passed to `figure.colorbar(self.pixels, **kwargs)`
See matplotlib documentation for the supported kwargs:
http://matplotlib.org/api/figure_api.html#matplotlib.figure.Figure.colorbar
"""
if self.colorbar is not None:
raise ValueError(
'There is already a colorbar attached to this CameraDisplay')
else:
self.colorbar = self.axes.figure.colorbar(self.pixels, **kwargs)
self.update()
def add_ellipse(self,
centroid,
length,
width,
angle,
asymmetry=0.0,
**kwargs):
"""
plot an ellipse on top of the camera
Parameters
----------
centroid: (float, float)
position of centroid
length: float
major axis
width: float
minor axis
angle: float
rotation angle wrt "up" about the centroid, clockwise, in radians
asymmetry: float
3rd-order moment for directionality if known
kwargs:
any MatPlotLib style arguments to pass to the Ellipse patch
"""
ellipse = Ellipse(xy=centroid,
width=width,
height=length,
angle=np.degrees(angle),
fill=False,
**kwargs)
self.axes.add_patch(ellipse)
self.update()
return ellipse
def overlay_moments(self, momparams, **kwargs):
"""helper to overlay ellipse from a `reco.MomentParameters` structure
Parameters
----------
momparams: `reco.MomentParameters`
structuring containing Hillas-style parameterization
kwargs: key=value
any style keywords to pass to matplotlib (e.g. color='red'
or linewidth=6)
"""
el = self.add_ellipse(centroid=(momparams.cen_x.value,
momparams.cen_y.value),
length=momparams.length.value,
width=momparams.width.value,
angle=momparams.psi.to(u.rad).value,
**kwargs)
self.axes.text(momparams.cen_x.value,
momparams.cen_y.value,
("({:.02f},{:.02f})\n"
"[w={:.02f},l={:.02f}]").format(
momparams.cen_x, momparams.cen_y, momparams.width,
momparams.length),
color=el.get_edgecolor())
def _on_pick(self, event):
""" handler for when a pixel is clicked """
pix_id = event.ind[-1]
xx, yy, aa = u.Quantity(self.geom.pix_x[pix_id]).value, \
u.Quantity(self.geom.pix_y[pix_id]).value, \
u.Quantity(np.array(self.geom.pix_area)[pix_id])
if self.geom.pix_type.startswith("hex"):
self._active_pixel.xy = (xx, yy)
else:
rr = sqrt(aa)
self._active_pixel.xy = (xx - rr / 2., yy - rr / 2.)
self._active_pixel.set_visible(True)
self._active_pixel_label.set_x(xx)
self._active_pixel_label.set_y(yy)
self._active_pixel_label.set_text("{:003d}".format(pix_id))
self._active_pixel_label.set_visible(True)
self.update()
self.on_pixel_clicked(pix_id) # call user-function
def on_pixel_clicked(self, pix_id):
"""virtual function to overide in sub-classes to do something special
when a pixel is clicked
"""
print("Clicked pixel_id {}".format(pix_id))
def show(self):
self.axes.figure.show()
class CameraDisplay:
"""
Camera Display using matplotlib.
Parameters
----------
geometry : `~ctapipe.instrument.CameraGeometry`
Definition of the Camera/Image
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
ax : `matplotlib.axes.Axes`
A matplotlib axes object to plot on, or None to create a new one
title : str (default "Camera")
Title to put on camera plot
norm : str or `matplotlib.color.Normalize` instance (default 'lin')
Normalization for the color scale.
Supported str arguments are
- 'lin': linear scale
- 'log': logarithmic scale (base 10)
cmap : str or `matplotlib.colors.Colormap` (default 'hot')
Color map to use (see `matplotlib.cm`)
allow_pick : bool (default False)
if True, allow user to click and select a pixel
autoupdate : bool (default True)
redraw automatically (otherwise need to call plt.draw())
autoscale : bool (default True)
rescale the vmin/vmax values when the image changes.
This is set to False if `set_limits_*` is called to explicity
set data limits.
Notes
-----
Speed:
CameraDisplay is not intended to be very fast (matplotlib
is not a very speed performant graphics library, it is
intended for nice output plots). However, most of the
slowness of CameraDisplay is in the constructor. Once one is
displayed, changing the image that is displayed is relatively
fast and efficient. Therefore it is best to initialize an
instance, and change the data, rather than generating new
CameraDisplays.
Pixel Implementation:
Pixels are rendered as a
`matplotlib.collections.PatchCollection` of Polygons (either 6
or 4 sided). You can access the PatchCollection directly (to
e.g. change low-level style parameters) via
`CameraDisplay.pixels`
Output:
Since CameraDisplay uses matplotlib, any display can be
saved to any output file supported via
plt.savefig(filename). This includes ``.pdf`` and ``.png``.
"""
def __init__(
self,
geometry,
image=None,
ax=None,
title=None,
norm="lin",
cmap=None,
allow_pick=False,
autoupdate=True,
autoscale=True,
):
self.axes = ax if ax is not None else plt.gca()
self.pixels = None
self.colorbar = None
self.autoupdate = autoupdate
self.autoscale = autoscale
self._active_pixel = None
self._active_pixel_label = None
self._axes_overlays = []
self.geom = geometry
if title is None:
title = geometry.camera_name
# initialize the plot and generate the pixels as a
# RegularPolyCollection
patches = []
if hasattr(self.geom, "mask"):
self.mask = self.geom.mask
else:
self.mask = np.ones_like(self.geom.pix_x.value, dtype=bool)
pix_x = self.geom.pix_x.value[self.mask]
pix_y = self.geom.pix_y.value[self.mask]
pix_area = self.geom.pix_area.value[self.mask]
for x, y, area in zip(pix_x, pix_y, pix_area):
if self.geom.pix_type.startswith("hex"):
r = sqrt(area * 2 / 3 / sqrt(3)) + 2 * PIXEL_EPSILON
poly = RegularPolygon(
(x, y),
6,
radius=r,
orientation=self.geom.pix_rotation.to_value(u.rad),
fill=True,
)
else:
r = sqrt(area) + PIXEL_EPSILON
poly = Rectangle(
(x - r / 2, y - r / 2),
width=r,
height=r,
angle=self.geom.pix_rotation.to_value(u.deg),
fill=True,
)
patches.append(poly)
self.pixels = PatchCollection(patches, cmap=cmap, linewidth=0)
self.axes.add_collection(self.pixels)
self.pixel_highlighting = copy.copy(self.pixels)
self.pixel_highlighting.set_facecolor("none")
self.pixel_highlighting.set_linewidth(0)
self.axes.add_collection(self.pixel_highlighting)
# Set up some nice plot defaults
self.axes.set_aspect("equal", "datalim")
self.axes.set_title(title)
self.axes.set_xlabel(f"X position ({self.geom.pix_x.unit})")
self.axes.set_ylabel(f"Y position ({self.geom.pix_y.unit})")
self.axes.autoscale_view()
# set up a patch to display when a pixel is clicked (and
# pixel_picker is enabled):
self._active_pixel = copy.copy(patches[0])
self._active_pixel.set_facecolor("r")
self._active_pixel.set_alpha(0.5)
self._active_pixel.set_linewidth(2.0)
self._active_pixel.set_visible(False)
self.axes.add_patch(self._active_pixel)
self._active_pixel_label = self.axes.text(
self._active_pixel.xy[0],
self._active_pixel.xy[1],
"0",
horizontalalignment="center",
verticalalignment="center",
)
self._active_pixel_label.set_visible(False)
# enable ability to click on pixel and do something (can be
# enabled on-the-fly later as well:
if allow_pick:
self.enable_pixel_picker()
if image is not None:
self.image = image
else:
self.image = np.zeros_like(self.geom.pix_id, dtype=np.float)
self.norm = norm
def highlight_pixels(self, pixels, color="g", linewidth=1, alpha=0.75):
"""
Highlight the given pixels with a colored line around them
Parameters
----------
pixels : index-like
The pixels to highlight.
Can either be a list or array of integers or a
boolean mask of length number of pixels
color: a matplotlib conform color
the color for the pixel highlighting
linewidth: float
linewidth of the highlighting in points
alpha: 0 <= alpha <= 1
The transparency
"""
l = np.zeros_like(self.image)
l[pixels] = linewidth
self.pixel_highlighting.set_linewidth(l)
self.pixel_highlighting.set_alpha(alpha)
self.pixel_highlighting.set_edgecolor(color)
self._update()
def enable_pixel_picker(self):
""" enable ability to click on pixels """
self.pixels.set_picker(True) # enable click
self.pixels.set_pickradius(
sqrt(u.Quantity(self.geom.pix_area[0]).value) / np.pi)
self.pixels.set_snap(True) # snap cursor to pixel center
self.axes.figure.canvas.mpl_connect("pick_event", self._on_pick)
def set_limits_minmax(self, zmin, zmax):
""" set the color scale limits from min to max """
self.pixels.set_clim(zmin, zmax)
self.autoscale = False
self._update()
def set_limits_percent(self, percent=95):
""" auto-scale the color range to percent of maximum """
zmin = np.nanmin(self.pixels.get_array())
zmax = np.nanmax(self.pixels.get_array())
dz = zmax - zmin
frac = percent / 100.0
self.autoscale = False
self.set_limits_minmax(zmin, zmax - (1.0 - frac) * dz)
@property
def norm(self):
"""
The norm instance of the Display
Possible values:
- "lin": linear scale
- "log": log scale (cannot have negative values)
- "symlog": symmetric log scale (negative values are ok)
- any matplotlib.colors.Normalize instance, e. g. PowerNorm(gamma=-2)
"""
return self.pixels.norm
@norm.setter
def norm(self, norm):
if norm == "lin":
self.pixels.norm = Normalize()
elif norm == "log":
self.pixels.norm = LogNorm()
self.pixels.autoscale() # this is to handle matplotlib bug #5424
elif norm == "symlog":
self.pixels.norm = SymLogNorm(linthresh=1.0)
self.pixels.autoscale()
elif isinstance(norm, Normalize):
self.pixels.norm = norm
else:
raise ValueError(
"Unsupported norm: '{}', options are 'lin',"
"'log','symlog', or a matplotlib Normalize object".format(
norm))
self.update(force=True)
self.pixels.autoscale()
@property
def cmap(self):
"""
Color map to use. Either a name or `matplotlib.colors.ColorMap`
instance, e.g. from `matplotlib.pyplot.cm`
"""
return self.pixels.get_cmap()
@cmap.setter
def cmap(self, cmap):
self.pixels.set_cmap(cmap)
self._update()
@property
def image(self):
"""The image displayed on the camera (1D array of pixel values)"""
return self.pixels.get_array()
@image.setter
def image(self, image):
"""
Change the image displayed on the Camera.
Parameters
----------
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
"""
image = np.asanyarray(image)
if image.shape != self.geom.pix_x.shape:
raise ValueError(
("Image has a different shape {} than the "
"given CameraGeometry {}").format(image.shape,
self.geom.pix_x.shape))
self.pixels.set_array(np.ma.masked_invalid(image[self.mask]))
self.pixels.changed()
if self.autoscale:
self.pixels.autoscale()
self._update()
def _update(self, force=False):
""" signal a redraw if autoupdate is turned on """
if self.autoupdate:
self.update(force)
def update(self, force=False):
""" redraw the display now """
self.axes.figure.canvas.draw()
if self.colorbar is not None:
if force is True:
self.colorbar.update_bruteforce(self.pixels)
else:
self.colorbar.update_normal(self.pixels)
self.colorbar.draw_all()
def add_colorbar(self, **kwargs):
"""
add a colorbar to the camera plot
kwargs are passed to `figure.colorbar(self.pixels, **kwargs)`
See matplotlib documentation for the supported kwargs:
http://matplotlib.org/api/figure_api.html#matplotlib.figure.Figure.colorbar
"""
if self.colorbar is not None:
raise ValueError(
"There is already a colorbar attached to this CameraDisplay")
else:
if "ax" not in kwargs:
kwargs["ax"] = self.axes
self.colorbar = self.axes.figure.colorbar(self.pixels, **kwargs)
self.update()
def add_ellipse(self,
centroid,
length,
width,
angle,
asymmetry=0.0,
**kwargs):
"""
plot an ellipse on top of the camera
Parameters
----------
centroid: (float, float)
position of centroid
length: float
major axis
width: float
minor axis
angle: float
rotation angle wrt x-axis about the centroid, anticlockwise, in radians
asymmetry: float
3rd-order moment for directionality if known
kwargs:
any MatPlotLib style arguments to pass to the Ellipse patch
"""
ellipse = Ellipse(
xy=centroid,
width=length,
height=width,
angle=np.degrees(angle),
fill=False,
**kwargs,
)
self.axes.add_patch(ellipse)
self.update()
return ellipse
def overlay_moments(self,
hillas_parameters,
with_label=True,
keep_old=False,
**kwargs):
"""helper to overlay ellipse from a `HillasParametersContainer` structure
Parameters
----------
hillas_parameters: `HillasParametersContainer`
structuring containing Hillas-style parameterization
with_label: bool
If True, show coordinates of centroid and width and length
keep_old: bool
If True, to not remove old overlays
kwargs: key=value
any style keywords to pass to matplotlib (e.g. color='red'
or linewidth=6)
"""
if not keep_old:
self.clear_overlays()
# strip off any units
cen_x = u.Quantity(hillas_parameters.x).value
cen_y = u.Quantity(hillas_parameters.y).value
length = u.Quantity(hillas_parameters.length).value
width = u.Quantity(hillas_parameters.width).value
el = self.add_ellipse(
centroid=(cen_x, cen_y),
length=length * 2,
width=width * 2,
angle=hillas_parameters.psi.rad,
**kwargs,
)
self._axes_overlays.append(el)
if with_label:
text = self.axes.text(
cen_x,
cen_y,
"({:.02f},{:.02f})\n[w={:.02f},l={:.02f}]".format(
hillas_parameters.x,
hillas_parameters.y,
hillas_parameters.width,
hillas_parameters.length,
),
color=el.get_edgecolor(),
)
self._axes_overlays.append(text)
def clear_overlays(self):
""" Remove added overlays from the axes """
while self._axes_overlays:
overlay = self._axes_overlays.pop()
overlay.remove()
def _on_pick(self, event):
""" handler for when a pixel is clicked """
pix_id = event.ind[-1]
xx, yy, aa = (
u.Quantity(self.geom.pix_x[pix_id]).value,
u.Quantity(self.geom.pix_y[pix_id]).value,
u.Quantity(np.array(self.geom.pix_area)[pix_id]),
)
if self.geom.pix_type.startswith("hex"):
self._active_pixel.xy = (xx, yy)
else:
rr = sqrt(aa)
self._active_pixel.xy = (xx - rr / 2.0, yy - rr / 2.0)
self._active_pixel.set_visible(True)
self._active_pixel_label.set_x(xx)
self._active_pixel_label.set_y(yy)
self._active_pixel_label.set_text(f"{pix_id:003d}")
self._active_pixel_label.set_visible(True)
self._update()
self.on_pixel_clicked(pix_id) # call user-function
def on_pixel_clicked(self, pix_id):
"""virtual function to overide in sub-classes to do something special
when a pixel is clicked
"""
print(f"Clicked pixel_id {pix_id}")
def show(self):
self.axes.figure.show()
class CameraDisplay:
"""
Camera Display using matplotlib.
Parameters
----------
geometry : `~ctapipe.instrument.CameraGeometry`
Definition of the Camera/Image
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
ax : `matplotlib.axes.Axes`
A matplotlib axes object to plot on, or None to create a new one
title : str (default "Camera")
Title to put on camera plot
norm : str or `matplotlib.color.Normalize` instance (default 'lin')
Normalization for the color scale.
Supported str arguments are
- 'lin': linear scale
- 'log': logarithmic scale (base 10)
cmap : str or `matplotlib.colors.Colormap` (default 'hot')
Color map to use (see `matplotlib.cm`)
allow_pick : bool (default False)
if True, allow user to click and select a pixel
autoupdate : bool (default True)
redraw automatically (otherwise need to call plt.draw())
autoscale : bool (default True)
rescale the vmin/vmax values when the image changes.
This is set to False if `set_limits_*` is called to explicity
set data limits.
antialiased : bool (default True)
whether to draw in antialiased mode or not.
Notes
-----
Speed:
CameraDisplay is not intended to be very fast (matplotlib
is not a very speed performant graphics library, it is
intended for nice output plots). However, most of the
slowness of CameraDisplay is in the constructor. Once one is
displayed, changing the image that is displayed is relatively
fast and efficient. Therefore it is best to initialize an
instance, and change the data, rather than generating new
CameraDisplays.
Pixel Implementation:
Pixels are rendered as a
`matplotlib.collections.PatchCollection` of Polygons (either 6
or 4 sided). You can access the PatchCollection directly (to
e.g. change low-level style parameters) via
`CameraDisplay.pixels`
Output:
Since CameraDisplay uses matplotlib, any display can be
saved to any output file supported via
plt.savefig(filename). This includes `.pdf` and `.png`.
"""
def __init__(
self,
geometry,
image=None,
ax=None,
title=None,
norm="lin",
cmap=None,
allow_pick=False,
autoupdate=True,
autoscale=True,
antialiased=True,
):
self.axes = ax if ax is not None else plt.gca()
self.geom = geometry
self.pixels = None
self.colorbar = None
self.autoupdate = autoupdate
self.autoscale = autoscale
self._active_pixel = None
self._active_pixel_label = None
if title is None:
title = geometry.cam_id
# initialize the plot and generate the pixels as a
# RegularPolyCollection
patches = []
if not hasattr(self.geom, "mask"):
self.geom.mask = np.ones_like(self.geom.pix_x.value, dtype=bool)
for xx, yy, aa in zip(
u.Quantity(self.geom.pix_x[self.geom.mask]).value,
u.Quantity(self.geom.pix_y[self.geom.mask]).value,
u.Quantity(np.array(self.geom.pix_area)[self.geom.mask]).value):
if self.geom.pix_type.startswith("hex"):
rr = sqrt(aa * 2 / 3 / sqrt(3)) + 2*PIXEL_EPSILON
poly = RegularPolygon(
(xx, yy), 6, radius=rr,
orientation=self.geom.pix_rotation.rad,
fill=True,
)
else:
rr = sqrt(aa) + PIXEL_EPSILON
poly = Rectangle(
(xx-rr/2., yy-rr/2.),
width=rr,
height=rr,
angle=self.geom.pix_rotation.deg,
fill=True,
)
patches.append(poly)
self.pixels = PatchCollection(patches, cmap=cmap, linewidth=0)
self.axes.add_collection(self.pixels)
self.pixel_highlighting = copy.copy(self.pixels)
self.pixel_highlighting.set_facecolor('none')
self.pixel_highlighting.set_linewidth(0)
self.axes.add_collection(self.pixel_highlighting)
# Set up some nice plot defaults
self.axes.set_aspect('equal', 'datalim')
self.axes.set_title(title)
self.axes.set_xlabel("X position ({})".format(self.geom.pix_x.unit))
self.axes.set_ylabel("Y position ({})".format(self.geom.pix_y.unit))
self.axes.autoscale_view()
# set up a patch to display when a pixel is clicked (and
# pixel_picker is enabled):
self._active_pixel = copy.copy(patches[0])
self._active_pixel.set_facecolor('r')
self._active_pixel.set_alpha(0.5)
self._active_pixel.set_linewidth(2.0)
self._active_pixel.set_visible(False)
self.axes.add_patch(self._active_pixel)
self._active_pixel_label = self.axes.text(self._active_pixel.xy[0],
self._active_pixel.xy[1],
"0",
horizontalalignment='center',
verticalalignment='center')
self._active_pixel_label.set_visible(False)
# enable ability to click on pixel and do something (can be
# enabled on-the-fly later as well:
if allow_pick:
self.enable_pixel_picker()
if image is not None:
self.image = image
else:
self.image = np.zeros_like(self.geom.pix_id, dtype=np.float)
self.norm = norm
def highlight_pixels(self, pixels, color='g', linewidth=1, alpha=0.75):
'''
Highlight the given pixels with a colored line around them
Parameters
----------
pixels : index-like
The pixels to highlight.
Can either be a list or array of integers or a
boolean mask of length number of pixels
color: a matplotlib conform color
the color for the pixel highlighting
linewidth: float
linewidth of the highlighting in points
alpha: 0 <= alpha <= 1
The transparency
'''
l = np.zeros_like(self.image)
l[pixels] = linewidth
self.pixel_highlighting.set_linewidth(l)
self.pixel_highlighting.set_alpha(alpha)
self.pixel_highlighting.set_edgecolor(color)
self._update()
def enable_pixel_picker(self):
""" enable ability to click on pixels """
self.pixels.set_picker(True) # enable click
self.pixels.set_pickradius(sqrt(u.Quantity(self.geom.pix_area[0])
.value) / np.pi)
self.pixels.set_snap(True) # snap cursor to pixel center
self.axes.figure.canvas.mpl_connect('pick_event', self._on_pick)
def set_limits_minmax(self, zmin, zmax):
""" set the color scale limits from min to max """
self.pixels.set_clim(zmin, zmax)
self.autoscale = False
self._update()
def set_limits_percent(self, percent=95):
""" auto-scale the color range to percent of maximum """
zmin = self.pixels.get_array().min()
zmax = self.pixels.get_array().max()
dz = zmax - zmin
frac = percent / 100.0
self.autoscale = False
self.set_limits_minmax(zmin, zmax - (1.0 - frac) * dz)
@property
def norm(self):
'''
The norm instance of the Display
Possible values:
- "lin": linear scale
- "log": log scale (cannot have negative values)
- "symlog": symmetric log scale (negative values are ok)
- any matplotlib.colors.Normalize instance, e. g. PowerNorm(gamma=-2)
'''
return self.pixels.norm
@norm.setter
def norm(self, norm):
if norm == 'lin':
self.pixels.norm = Normalize()
elif norm == 'log':
self.pixels.norm = LogNorm()
self.pixels.autoscale() # this is to handle matplotlib bug #5424
elif norm == 'symlog':
self.pixels.norm = SymLogNorm(linthresh=1.0)
self.pixels.autoscale()
elif isinstance(norm, Normalize):
self.pixels.norm = norm
else:
raise ValueError("Unsupported norm: '{}', options are 'lin',"
"'log','symlog', or a matplotlib Normalize object"
.format(norm))
self.update(force=True)
self.pixels.autoscale()
@property
def cmap(self):
"""
Color map to use. Either a name or `matplotlib.colors.ColorMap`
instance, e.g. from `matplotlib.pyplot.cm`
"""
return self.pixels.get_cmap()
@cmap.setter
def cmap(self, cmap):
self.pixels.set_cmap(cmap)
self._update()
@property
def image(self):
"""The image displayed on the camera (1D array of pixel values)"""
return self.pixels.get_array()
@image.setter
def image(self, image):
"""
Change the image displayed on the Camera.
Parameters
----------
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
"""
image = np.asanyarray(image)
if image.shape != self.geom.pix_x.shape:
raise ValueError(
"Image has a different shape {} than the "
"given CameraGeometry {}"
.format(image.shape, self.geom.pix_x.shape)
)
self.pixels.set_array(image[self.geom.mask])
self.pixels.changed()
if self.autoscale:
self.pixels.autoscale()
self._update()
def _update(self, force=False):
""" signal a redraw if autoupdate is turned on """
if self.autoupdate:
self.update(force)
def update(self, force=False):
""" redraw the display now """
self.axes.figure.canvas.draw()
if self.colorbar is not None:
if force is True:
self.colorbar.update_bruteforce(self.pixels)
else:
self.colorbar.update_normal(self.pixels)
self.colorbar.draw_all()
def add_colorbar(self, **kwargs):
"""
add a colobar to the camera plot
kwargs are passed to `figure.colorbar(self.pixels, **kwargs)`
See matplotlib documentation for the supported kwargs:
http://matplotlib.org/api/figure_api.html#matplotlib.figure.Figure.colorbar
"""
if self.colorbar is not None:
raise ValueError(
'There is already a colorbar attached to this CameraDisplay'
)
else:
self.colorbar = self.axes.figure.colorbar(self.pixels, **kwargs)
self.update()
def add_ellipse(self, centroid, length, width, angle, asymmetry=0.0,
**kwargs):
"""
plot an ellipse on top of the camera
Parameters
----------
centroid: (float, float)
position of centroid
length: float
major axis
width: float
minor axis
angle: float
rotation angle wrt x-axis about the centroid, anticlockwise, in radians
asymmetry: float
3rd-order moment for directionality if known
kwargs:
any MatPlotLib style arguments to pass to the Ellipse patch
"""
ellipse = Ellipse(xy=centroid, width=length, height=width,
angle=np.degrees(angle), fill=False, **kwargs)
self.axes.add_patch(ellipse)
self.update()
return ellipse
def overlay_moments(self, momparams, with_label=True, **kwargs):
"""helper to overlay ellipse from a `reco.MomentParameters` structure
Parameters
----------
momparams: `reco.MomentParameters`
structuring containing Hillas-style parameterization
kwargs: key=value
any style keywords to pass to matplotlib (e.g. color='red'
or linewidth=6)
"""
# strip off any units
cen_x = u.Quantity(momparams.cen_x).value
cen_y = u.Quantity(momparams.cen_y).value
length = u.Quantity(momparams.length).value
width = u.Quantity(momparams.width).value
el = self.add_ellipse(centroid=(cen_x, cen_y),
length=length*2,
width=width*2, angle=momparams.psi.rad,
**kwargs)
if with_label:
self.axes.text(cen_x, cen_y,
("({:.02f},{:.02f})\n"
"[w={:.02f},l={:.02f}]")
.format(momparams.cen_x,
momparams.cen_y,
momparams.width, momparams.length),
color=el.get_edgecolor())
def _on_pick(self, event):
""" handler for when a pixel is clicked """
pix_id = event.ind[-1]
xx, yy, aa = u.Quantity(self.geom.pix_x[pix_id]).value, \
u.Quantity(self.geom.pix_y[pix_id]).value, \
u.Quantity(np.array(self.geom.pix_area)[pix_id])
if self.geom.pix_type.startswith("hex"):
self._active_pixel.xy = (xx, yy)
else:
rr = sqrt(aa)
self._active_pixel.xy = (xx - rr / 2., yy - rr / 2.)
self._active_pixel.set_visible(True)
self._active_pixel_label.set_x(xx)
self._active_pixel_label.set_y(yy)
self._active_pixel_label.set_text("{:003d}".format(pix_id))
self._active_pixel_label.set_visible(True)
self._update()
self.on_pixel_clicked(pix_id) # call user-function
def on_pixel_clicked(self, pix_id):
"""virtual function to overide in sub-classes to do something special
when a pixel is clicked
"""
print("Clicked pixel_id {}".format(pix_id))
def show(self):
self.axes.figure.show()
class SimulationGui(QMainWindow):
def __init__(self, net=None, parent=None, fname=None):
QMainWindow.__init__(self)
self.ui = Ui_SimulationWindow()
self.ui.setupUi(self)
if fname:
self.set_title(fname)
# context menu
self.ui.nodeInspector.addAction(self.ui.actionCopyInspectorData)
self.ui.nodeInspector.addAction(self.ui.actionShowLocalizedSubclusters)
# callbacks
self.ui.actionCopyInspectorData.activated\
.connect(self.on_actionCopyInspectorData_triggered)
self.ui.actionShowLocalizedSubclusters.activated\
.connect(self.on_actionShowLocalizedSubclusters_triggered)
self.dpi = 72
# take size of networDisplayWidget
self.fig = Figure((700 / self.dpi, 731 / self.dpi), self.dpi,
facecolor='0.9')
self.canvas = FigureCanvas(self.fig)
self.canvas.setParent(self.ui.networkDisplayWidget)
self.nav = NavigationToolbar(self.canvas, self.ui.networkDisplayWidget,
coordinates=True)
self.nav.setGeometry(QRect(0, 0, 651, 36))
self.nav.setIconSize(QSize(24, 24))
self.axes = self.fig.add_subplot(111)
# matplotlib.org/api/figure_api.html#matplotlib.figure.SubplotParams
self.fig.subplots_adjust(left=0.03, right=0.99, top=0.92)
if net:
self.init_sim(net)
self.connect(self.ui.showNodes, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.showEdges, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.showMessages, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.showLabels, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.redrawNetworkButton, SIGNAL('clicked(bool)'),
self.redraw)
self.connect(self.ui.treeGroupBox, SIGNAL('toggled(bool)'),
self.refresh_visibility)
self.connect(self.ui.treeKey, SIGNAL('textEdited(QString)'),
self.redraw)
self.connect(self.ui.propagationError, SIGNAL('toggled(bool)'),
self.refresh_visibility)
self.connect(self.ui.locKey, SIGNAL('textEdited(QString)'),
self.redraw)
# callbacks
self.ui.actionOpenNetwork.activated\
.connect(self.on_actionOpenNetwork_triggered)
self.ui.actionSaveNetwork.activated\
.connect(self.on_actionSaveNetwork_triggered)
self.ui.actionRun.activated.connect(self.on_actionRun_triggered)
self.ui.actionStep.activated.connect(self.on_actionStep_triggered)
self.ui.actionReset.activated.connect(self.on_actionReset_triggered)
self.canvas.mpl_connect('pick_event', self.on_pick)
def handleInspectorMenu(self, pos):
menu = QMenu()
menu.addAction('Add')
menu.addAction('Delete')
menu.exec_(QCursor.pos())
def init_sim(self, net):
self.net = net
self.sim = Simulation(net)
self.connect(self.sim, SIGNAL("redraw()"), self.redraw)
self.connect(self.sim, SIGNAL("updateLog(QString)"), self.update_log)
self.redraw()
def update_log(self, text):
""" Add item to list widget """
print "Add: " + text
self.ui.logListWidget.insertItem(0, text)
# self.ui.logListWidget.sortItems()
def redraw(self):
self.refresh_network_inspector()
self.draw_network()
self.reset_zoom()
self.refresh_visibility()
def draw_network(self, net=None, clear=True, subclusters=None,
drawMessages=True):
if not net:
net = self.net
currentAlgorithm = self.net.get_current_algorithm()
if clear:
self.axes.clear()
self.axes.imshow(net.environment.im, vmin=0, cmap='binary_r',
origin='lower')
self.draw_tree(str(self.ui.treeKey.text()), net)
self.draw_edges(net)
self.draw_propagation_errors(str(self.ui.locKey.text()), net)
if subclusters:
node_colors = self.get_node_colors(net, subclusters=subclusters)
else:
node_colors = self.get_node_colors(net, algorithm=currentAlgorithm)
self.node_collection = self.draw_nodes(net, node_colors)
if drawMessages:
self.draw_messages(net)
self.draw_labels(net)
self.drawnNet = net
step_text = ' (step %d)' % self.net.algorithmState['step'] \
if isinstance(currentAlgorithm, NodeAlgorithm) else ''
self.axes.set_title((currentAlgorithm.name
if currentAlgorithm else '') + step_text)
self.refresh_visibility()
# To save multiple figs of the simulation uncomment next two lines:
#self.fig.savefig('network-alg-%d-step-%d.png' %
# (self.net.algorithmState['index'], self.net.algorithmState['step']))
def draw_nodes(self, net=None, node_colors={}, node_radius={}):
if not net:
net = self.net
if type(node_colors) == str:
node_colors = {node: node_colors for node in net.nodes()}
nodeCircles = []
for n in net.nodes():
c = NodeCircle(tuple(net.pos[n]), node_radius.get(n, 8.0),
color=node_colors.get(n, 'r'),
ec='k', lw=1.0, ls='solid', picker=3)
nodeCircles.append(c)
node_collection = PatchCollection(nodeCircles, match_original=True)
node_collection.set_picker(3)
self.axes.add_collection(node_collection)
return node_collection
def get_node_colors(self, net, algorithm=None, subclusters=None,
drawLegend=True):
COLORS = 'rgbcmyw' * 100
node_colors = {}
if algorithm:
color_map = {}
if isinstance(algorithm, NodeAlgorithm):
for ind, status in enumerate(algorithm.STATUS.keys()):
if status == 'IDLE':
color_map.update({status: 'k'})
else:
color_map.update({status: COLORS[ind]})
if drawLegend:
proxy = []
labels = []
for status, color in color_map.items():
proxy.append(Circle((0, 0), radius=8.0,
color=color, ec='k',
lw=1.0, ls='solid'))
labels.append(status)
self.fig.legends = []
self.fig.legend(proxy, labels, loc=8,
prop={'size': '10.0'}, ncol=len(proxy),
title='Statuses for %s:'
% algorithm.name)
for n in net.nodes():
if n.status == '' or not n.status in color_map.keys():
node_colors[n] = 'r'
else:
node_colors[n] = color_map[n.status]
elif subclusters:
for i, sc in enumerate(subclusters):
for n in sc:
if n in node_colors:
node_colors[n] = 'k'
else:
node_colors[n] = COLORS[i]
return node_colors
def draw_edges(self, net=None):
if not net:
net = self.net
self.edge_collection = nx.draw_networkx_edges(net, net.pos, alpha=0.6,
edgelist=None,
ax=self.axes)
def draw_messages(self, net=None):
if not net:
net = self.net
self.messages = []
msgCircles = []
for node in net.nodes():
for msg in node.outbox:
# broadcast
if msg.destination is None:
for neighbor in net.adj[node].keys():
nbr_msg = msg.copy()
nbr_msg.destination = neighbor
c = MessageCircle(nbr_msg, net, 'out', 3.0, lw=0,
picker=3, zorder=3, color='b')
self.messages.append(nbr_msg)
msgCircles.append(c)
else:
c = MessageCircle(msg, net, 'out', 3.0, lw=0, picker=3,
zorder=3, color='b')
self.messages.append(msg)
msgCircles.append(c)
for msg in node.inbox:
c = MessageCircle(msg, net, 'in', 3.0, lw=0, picker=3,
zorder=3, color='g')
self.messages.append(msg)
msgCircles.append(c)
if self.messages:
self.message_collection = PatchCollection(msgCircles,
match_original=True)
self.message_collection.set_picker(3)
self.axes.add_collection(self.message_collection)
def draw_labels(self, net=None):
if not net:
net = self.net
label_pos = {}
for n in net.nodes():
label_pos[n] = net.pos[n].copy() + 10
self.label_collection = nx.draw_networkx_labels(net, label_pos,
labels=net.labels,
ax=self.axes)
def refresh_visibility(self):
try:
self.node_collection.set_visible(self.ui.showNodes.isChecked())
self.edge_collection.set_visible(self.ui.showEdges.isChecked())
for label in self.label_collection.values():
label.set_visible(self.ui.showLabels.isChecked())
self.tree_collection.set_visible(self.ui.treeGroupBox.isChecked())
self.ini_error_collection.set_visible(self.ui.propagationError\
.isChecked())
self.propagation_error_collection.set_visible(self.ui\
.propagationError\
.isChecked())
# sould be last, sometimes there are no messages
self.message_collection.set_visible(self.ui.showMessages\
.isChecked())
except AttributeError:
print 'Refresh visibility warning'
self.canvas.draw()
def draw_tree(self, treeKey, net=None):
"""
Show tree representation of network.
Attributes:
treeKey (str):
key in nodes memory (dictionary) where tree data is stored
storage format can be a list off tree neighbors or a dict:
{'parent': parent_node,
'children': [child_node1, child_node2 ...]}
"""
if not net:
net = self.net
treeNet = net.get_tree_net(treeKey)
if treeNet:
self.tree_collection = draw_networkx_edges(treeNet, treeNet.pos,
treeNet.edges(),
width=1.8, alpha=0.6,
ax=self.axes)
def draw_propagation_errors(self, locKey, net):
SCALE_FACTOR = 0.6
if not net:
net = self.net
if any([not locKey in node.memory for node in net.nodes()]):
self.propagation_error_collection = []
self.ini_error_collection = []
return
rms = {'iniRms': {}, 'stitchRms': {}}
for node in net.nodes():
rms['iniRms'][node] = get_rms(self.net.pos,
(node.memory['iniLocs']), True) * \
SCALE_FACTOR
rms['stitchRms'][node] = get_rms(self.net.pos, node.memory[locKey],
True) * SCALE_FACTOR
self.propagation_error_collection = \
self.draw_nodes(net=net, node_colors='g',
node_radius=rms['stitchRms'])
self.ini_error_collection = self.draw_nodes(net=net, node_colors='b',
node_radius=rms['iniRms'])
def reset_zoom(self):
self.axes.set_xlim((0, self.net.environment.im.shape[1]))
self.axes.set_ylim((0, self.net.environment.im.shape[0]))
def set_title(self, fname):
new = ' - '.join([str(self.windowTitle()).split(' - ')[0], str(fname)])
self.setWindowTitle(new)
def refresh_network_inspector(self):
niModel = DictionaryTreeModel(dic=self.net.get_dic())
self.ui.networkInspector.setModel(niModel)
self.ui.networkInspector.expandToDepth(0)
"""
Callbacks
"""
def on_actionRun_triggered(self):
self.ui.logListWidget.clear()
print 'running ...',
self.sim.stepping = True
self.sim.run_all()
def on_actionStep_triggered(self):
print 'next step ...',
self.sim.run(self.ui.stepSize.value())
def on_actionReset_triggered(self):
print 'reset ...',
self.sim.reset()
self.redraw()
def on_actionCopyInspectorData_triggered(self):
string = 'Node inspector data\n-------------------'
# raise()
for qModelIndex in self.ui.nodeInspector.selectedIndexes():
string += '\n' + qModelIndex.internalPointer().toString(' ')
clipboard = app.clipboard()
clipboard.setText(string)
event = QEvent(QEvent.Clipboard)
app.sendEvent(clipboard, event)
def on_actionShowLocalizedSubclusters_triggered(self):
if len(self.ui.nodeInspector.selectedIndexes()) == 1:
qModelIndex = self.ui.nodeInspector.selectedIndexes()[0]
treeItem = qModelIndex.internalPointer()
assert(isinstance(treeItem.itemDataValue, Positions))
estimated = deepcopy(treeItem.itemDataValue)
estimatedsub = estimated.subclusters[0]
# rotate, translate and optionally scale
# w.r.t. original positions (pos)
align_clusters(Positions.create(self.net.pos), estimated, True)
net = self.net.subnetwork(estimatedsub.keys(), pos=estimatedsub)
self.draw_network(net=net, drawMessages=False)
edge_pos = numpy.asarray([(self.net.pos[node], estimatedsub[node][:2])
for node in net])
error_collection = LineCollection(edge_pos, colors='r')
self.axes.add_collection(error_collection)
rms = get_rms(self.net.pos, estimated, scale=False)
self.update_log('rms = %.3f' % rms)
self.update_log('localized = %.2f%% (%d/%d)' %
(len(estimatedsub) * 1. / len(self.net.pos) * 100,
len(estimatedsub), len(self.net.pos)))
def on_actionSaveNetwork_triggered(self, *args):
default_filetype = 'gz'
start = datetime.now().strftime('%Y%m%d') + default_filetype
filters = ['Network pickle (*.gz)', 'All files (*)']
selectedFilter = 'Network pickle (gz)'
filters = ';;'.join(filters)
fname = QFileDialog.getSaveFileName(self, "Choose a filename",
start, filters, selectedFilter)[0]
if fname:
try:
write_pickle(self.net, fname)
except Exception, e:
QMessageBox.critical(
self, "Error saving file", str(e),
QMessageBox.Ok, QMessageBox.NoButton)
else:
self.set_title(fname)
class SimulationGui(QMainWindow):
def __init__(self, net=None, parent=None, fname=None):
QMainWindow.__init__(self)
self.ui = Ui_SimulationWindow()
self.ui.setupUi(self)
if fname:
self.set_title(fname)
# context menu
self.ui.nodeInspector.addAction(self.ui.actionCopyInspectorData)
self.ui.nodeInspector.addAction(self.ui.actionShowLocalizedSubclusters)
# callbacks
self.ui.actionCopyInspectorData.activated\
.connect(self.on_actionCopyInspectorData_triggered)
self.ui.actionShowLocalizedSubclusters.activated\
.connect(self.on_actionShowLocalizedSubclusters_triggered)
self.dpi = 72
# take size of networDisplayWidget
self.fig = Figure((700 / self.dpi, 731 / self.dpi),
self.dpi,
facecolor='0.9')
self.canvas = FigureCanvas(self.fig)
self.canvas.setParent(self.ui.networkDisplayWidget)
self.nav = NavigationToolbar(self.canvas,
self.ui.networkDisplayWidget,
coordinates=True)
self.nav.setGeometry(QRect(0, 0, 651, 36))
self.nav.setIconSize(QSize(24, 24))
self.axes = self.fig.add_subplot(111)
# matplotlib.org/api/figure_api.html#matplotlib.figure.SubplotParams
self.fig.subplots_adjust(left=0.03, right=0.99, top=0.92)
if net:
self.init_sim(net)
self.connect(self.ui.showNodes, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.showEdges, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.showMessages, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.showLabels, SIGNAL('stateChanged(int)'),
self.refresh_visibility)
self.connect(self.ui.redrawNetworkButton, SIGNAL('clicked(bool)'),
self.redraw)
self.connect(self.ui.treeGroupBox, SIGNAL('toggled(bool)'),
self.refresh_visibility)
self.connect(self.ui.treeKey, SIGNAL('textEdited(QString)'),
self.redraw)
self.connect(self.ui.propagationError, SIGNAL('toggled(bool)'),
self.refresh_visibility)
self.connect(self.ui.locKey, SIGNAL('textEdited(QString)'),
self.redraw)
# callbacks
self.ui.actionOpenNetwork.activated\
.connect(self.on_actionOpenNetwork_triggered)
self.ui.actionSaveNetwork.activated\
.connect(self.on_actionSaveNetwork_triggered)
self.ui.actionRun.activated.connect(self.on_actionRun_triggered)
self.ui.actionStep.activated.connect(self.on_actionStep_triggered)
self.ui.actionReset.activated.connect(self.on_actionReset_triggered)
self.canvas.mpl_connect('pick_event', self.on_pick)
def handleInspectorMenu(self, pos):
menu = QMenu()
menu.addAction('Add')
menu.addAction('Delete')
menu.exec_(QCursor.pos())
def init_sim(self, net):
self.net = net
self.sim = Simulation(net)
self.connect(self.sim, SIGNAL("redraw()"), self.redraw)
self.connect(self.sim, SIGNAL("updateLog(QString)"), self.update_log)
self.redraw()
def update_log(self, text):
""" Add item to list widget """
print "Add: " + text
self.ui.logListWidget.insertItem(0, text)
# self.ui.logListWidget.sortItems()
def redraw(self):
self.refresh_network_inspector()
self.draw_network()
self.reset_zoom()
self.refresh_visibility()
def draw_network(self,
net=None,
clear=True,
subclusters=None,
drawMessages=True):
if not net:
net = self.net
currentAlgorithm = self.net.get_current_algorithm()
if clear:
self.axes.clear()
self.axes.imshow(net.environment.im,
vmin=0,
cmap='binary_r',
origin='lower')
self.draw_tree(str(self.ui.treeKey.text()), net)
self.draw_edges(net)
self.draw_propagation_errors(str(self.ui.locKey.text()), net)
if subclusters:
node_colors = self.get_node_colors(net, subclusters=subclusters)
else:
node_colors = self.get_node_colors(net, algorithm=currentAlgorithm)
self.node_collection = self.draw_nodes(net, node_colors)
if drawMessages:
self.draw_messages(net)
self.draw_labels(net)
self.drawnNet = net
step_text = ' (step %d)' % self.net.algorithmState['step'] \
if isinstance(currentAlgorithm, NodeAlgorithm) else ''
self.axes.set_title(
(currentAlgorithm.name if currentAlgorithm else '') + step_text)
self.refresh_visibility()
# To save multiple figs of the simulation uncomment next two lines:
#self.fig.savefig('network-alg-%d-step-%d.png' %
# (self.net.algorithmState['index'], self.net.algorithmState['step']))
def draw_nodes(self, net=None, node_colors={}, node_radius={}):
if not net:
net = self.net
if type(node_colors) == str:
node_colors = {node: node_colors for node in net.nodes()}
nodeCircles = []
for n in net.nodes():
c = NodeCircle(tuple(net.pos[n]),
node_radius.get(n, 8.0),
color=node_colors.get(n, 'r'),
ec='k',
lw=1.0,
ls='solid',
picker=3)
nodeCircles.append(c)
node_collection = PatchCollection(nodeCircles, match_original=True)
node_collection.set_picker(3)
self.axes.add_collection(node_collection)
return node_collection
def get_node_colors(self,
net,
algorithm=None,
subclusters=None,
drawLegend=True):
COLORS = 'rgbcmyw' * 100
node_colors = {}
if algorithm:
color_map = {}
if isinstance(algorithm, NodeAlgorithm):
for ind, status in enumerate(algorithm.STATUS.keys()):
if status == 'IDLE':
color_map.update({status: 'k'})
else:
color_map.update({status: COLORS[ind]})
if drawLegend:
proxy = []
labels = []
for status, color in color_map.items():
proxy.append(
Circle((0, 0),
radius=8.0,
color=color,
ec='k',
lw=1.0,
ls='solid'))
labels.append(status)
self.fig.legends = []
self.fig.legend(proxy,
labels,
loc=8,
prop={'size': '10.0'},
ncol=len(proxy),
title='Statuses for %s:' % algorithm.name)
for n in net.nodes():
if n.status == '' or not n.status in color_map.keys():
node_colors[n] = 'r'
else:
node_colors[n] = color_map[n.status]
elif subclusters:
for i, sc in enumerate(subclusters):
for n in sc:
if n in node_colors:
node_colors[n] = 'k'
else:
node_colors[n] = COLORS[i]
return node_colors
def draw_edges(self, net=None):
if not net:
net = self.net
self.edge_collection = nx.draw_networkx_edges(net,
net.pos,
alpha=0.6,
edgelist=None,
ax=self.axes)
def draw_messages(self, net=None):
if not net:
net = self.net
self.messages = []
msgCircles = []
for node in net.nodes():
for msg in node.outbox:
# broadcast
if msg.destination is None:
for neighbor in net.adj[node].keys():
nbr_msg = msg.copy()
nbr_msg.destination = neighbor
c = MessageCircle(nbr_msg,
net,
'out',
3.0,
lw=0,
picker=3,
zorder=3,
color='b')
self.messages.append(nbr_msg)
msgCircles.append(c)
else:
c = MessageCircle(msg,
net,
'out',
3.0,
lw=0,
picker=3,
zorder=3,
color='b')
self.messages.append(msg)
msgCircles.append(c)
for msg in node.inbox:
c = MessageCircle(msg,
net,
'in',
3.0,
lw=0,
picker=3,
zorder=3,
color='g')
self.messages.append(msg)
msgCircles.append(c)
if self.messages:
self.message_collection = PatchCollection(msgCircles,
match_original=True)
self.message_collection.set_picker(3)
self.axes.add_collection(self.message_collection)
def draw_labels(self, net=None):
if not net:
net = self.net
label_pos = {}
for n in net.nodes():
label_pos[n] = net.pos[n].copy() + 10
self.label_collection = nx.draw_networkx_labels(net,
label_pos,
labels=net.labels,
ax=self.axes)
def refresh_visibility(self):
try:
self.node_collection.set_visible(self.ui.showNodes.isChecked())
self.edge_collection.set_visible(self.ui.showEdges.isChecked())
for label in self.label_collection.values():
label.set_visible(self.ui.showLabels.isChecked())
self.tree_collection.set_visible(self.ui.treeGroupBox.isChecked())
self.ini_error_collection.set_visible(self.ui.propagationError\
.isChecked())
self.propagation_error_collection.set_visible(self.ui\
.propagationError\
.isChecked())
# sould be last, sometimes there are no messages
self.message_collection.set_visible(self.ui.showMessages\
.isChecked())
except AttributeError:
print 'Refresh visibility warning'
self.canvas.draw()
def draw_tree(self, treeKey, net=None):
"""
Show tree representation of network.
Attributes:
treeKey (str):
key in nodes memory (dictionary) where tree data is stored
storage format can be a list off tree neighbors or a dict:
{'parent': parent_node,
'children': [child_node1, child_node2 ...]}
"""
if not net:
net = self.net
treeNet = net.get_tree_net(treeKey)
if treeNet:
self.tree_collection = draw_networkx_edges(treeNet,
treeNet.pos,
treeNet.edges(),
width=1.8,
alpha=0.6,
ax=self.axes)
def draw_propagation_errors(self, locKey, net):
SCALE_FACTOR = 0.6
if not net:
net = self.net
if any([not locKey in node.memory for node in net.nodes()]):
self.propagation_error_collection = []
self.ini_error_collection = []
return
rms = {'iniRms': {}, 'stitchRms': {}}
for node in net.nodes():
rms['iniRms'][node] = get_rms(self.net.pos,
(node.memory['iniLocs']), True) * \
SCALE_FACTOR
rms['stitchRms'][node] = get_rms(self.net.pos, node.memory[locKey],
True) * SCALE_FACTOR
self.propagation_error_collection = \
self.draw_nodes(net=net, node_colors='g',
node_radius=rms['stitchRms'])
self.ini_error_collection = self.draw_nodes(net=net,
node_colors='b',
node_radius=rms['iniRms'])
def reset_zoom(self):
self.axes.set_xlim((0, self.net.environment.im.shape[1]))
self.axes.set_ylim((0, self.net.environment.im.shape[0]))
def set_title(self, fname):
new = ' - '.join([str(self.windowTitle()).split(' - ')[0], str(fname)])
self.setWindowTitle(new)
def refresh_network_inspector(self):
niModel = DictionaryTreeModel(dic=self.net.get_dic())
self.ui.networkInspector.setModel(niModel)
self.ui.networkInspector.expandToDepth(0)
"""
Callbacks
"""
def on_actionRun_triggered(self):
self.ui.logListWidget.clear()
print 'running ...',
self.sim.stepping = True
self.sim.run_all()
def on_actionStep_triggered(self):
print 'next step ...',
self.sim.run(self.ui.stepSize.value())
def on_actionReset_triggered(self):
print 'reset ...',
self.sim.reset()
self.redraw()
def on_actionCopyInspectorData_triggered(self):
string = 'Node inspector data\n-------------------'
# raise()
for qModelIndex in self.ui.nodeInspector.selectedIndexes():
string += '\n' + qModelIndex.internalPointer().toString(' ')
clipboard = app.clipboard()
clipboard.setText(string)
event = QEvent(QEvent.Clipboard)
app.sendEvent(clipboard, event)
def on_actionShowLocalizedSubclusters_triggered(self):
if len(self.ui.nodeInspector.selectedIndexes()) == 1:
qModelIndex = self.ui.nodeInspector.selectedIndexes()[0]
treeItem = qModelIndex.internalPointer()
assert (isinstance(treeItem.itemDataValue, Positions))
estimated = deepcopy(treeItem.itemDataValue)
estimatedsub = estimated.subclusters[0]
# rotate, translate and optionally scale
# w.r.t. original positions (pos)
align_clusters(Positions.create(self.net.pos), estimated, True)
net = self.net.subnetwork(estimatedsub.keys(), pos=estimatedsub)
self.draw_network(net=net, drawMessages=False)
edge_pos = numpy.asarray([
(self.net.pos[node], estimatedsub[node][:2]) for node in net
])
error_collection = LineCollection(edge_pos, colors='r')
self.axes.add_collection(error_collection)
rms = get_rms(self.net.pos, estimated, scale=False)
self.update_log('rms = %.3f' % rms)
self.update_log('localized = %.2f%% (%d/%d)' %
(len(estimatedsub) * 1. / len(self.net.pos) * 100,
len(estimatedsub), len(self.net.pos)))
def on_actionSaveNetwork_triggered(self, *args):
default_filetype = 'gz'
start = datetime.now().strftime('%Y%m%d') + default_filetype
filters = ['Network pickle (*.gz)', 'All files (*)']
selectedFilter = 'Network pickle (gz)'
filters = ';;'.join(filters)
fname = QFileDialog.getSaveFileName(self, "Choose a filename", start,
filters, selectedFilter)[0]
if fname:
try:
write_pickle(self.net, fname)
except Exception, e:
QMessageBox.critical(self, "Error saving file", str(e),
QMessageBox.Ok, QMessageBox.NoButton)
else:
self.set_title(fname)
class CameraDisplay:
"""Camera Display using matplotlib.
Parameters
----------
geometry : `~ctapipe.io.CameraGeometry`
Definition of the Camera/Image
axis : `matplotlib.axes.Axes`
A matplotlib axes object to plot on, or None to create a new one
title : str
Title to put on camera plot
allow_pick : bool (default False)
if True, allow user to click and select a pixel
autoupdate : bool (default True)
redraw automatically (otherwise need to call plt.draw())
antialiased : bool (default True)
whether to draw in antialiased mode or not.
Notes
-----
Speed:
CameraDisplay is not intended to be very fast (matplotlib
is not a very speed performant graphics library, it is
intended for nice output plots). However, most of the
slowness of CameraDisplay is in the constructor. Once one is
displayed, changing the image that is displayed is relatively
fast and efficient. Therefore it is best to initialize an
instance, and change the data, rather than generating new
CameraDisplays.
Pixel Implementation:
Pixels are rendered as a
`matplotlib.collections.PatchCollection` of Polygons (either 6
or 4 sided). You can access the PatchCollection directly (to
e.g. change low-level style parameters) via
`CameraDisplay.pixels`
Output:
Since CameraDisplay uses matplotlib, any display can be
saved to any output file supported via
plt.savefig(filename). This includes `.pdf` and `.png`.
"""
def __init__(self, geometry, axes=None, title="Camera",
allow_pick=False, autoupdate=True, antialiased=True):
self.axes = axes if axes is not None else plt.gca()
self.geom = geometry
self.pixels = None
self.cmap = plt.cm.jet
self.autoupdate = autoupdate
self._active_pixel = None
self._active_pixel_label = None
# initialize the plot and generate the pixels as a
# RegularPolyCollection
patches = []
for xx, yy, aa in zip(u.Quantity(self.geom.pix_x).value,
u.Quantity(self.geom.pix_y).value,
u.Quantity(np.array(self.geom.pix_area))):
if self.geom.pix_type.startswith("hex"):
rr = sqrt(aa * 2 / 3 / sqrt(3))
poly = RegularPolygon((xx, yy), 6, radius=rr,
orientation=np.radians(0),
fill=True)
else:
rr = sqrt(aa) * sqrt(2)
poly = Rectangle((xx, yy), width=rr, height=rr,
angle=np.radians(0),
fill=True)
patches.append(poly)
self.pixels = PatchCollection(patches, cmap=self.cmap, linewidth=0)
self.axes.add_collection(self.pixels)
# Set up some nice plot defaults
self.axes.set_aspect('equal', 'datalim')
self.axes.set_title(title)
self.axes.set_xlabel("X position ({})".format(self.geom.pix_x.unit))
self.axes.set_ylabel("Y position ({})".format(self.geom.pix_y.unit))
self.axes.autoscale_view()
# set up a patch to display when a pixel is clicked (and
# pixel_picker is enabled):
self._active_pixel = copy.copy(patches[0])
self._active_pixel.set_facecolor('r')
self._active_pixel.set_alpha(0.5)
self._active_pixel.set_linewidth(2.0)
self._active_pixel.set_visible(False)
self.axes.add_patch(self._active_pixel)
self._active_pixel_label = plt.text(self._active_pixel.xy[0],
self._active_pixel.xy[1],
"0",
horizontalalignment='center',
verticalalignment='center')
self._active_pixel_label.set_visible(False)
# enable ability to click on pixel and do something (can be
# enabled on-the-fly later as well:
if allow_pick:
self.enable_pixel_picker()
def enable_pixel_picker(self):
""" enable ability to click on pixels """
self.pixels.set_picker(True) # enable click
self.pixels.set_pickradius(sqrt(u.Quantity(self.geom.pix_area[0])
.value) / np.pi)
self.pixels.set_snap(True) # snap cursor to pixel center
self.axes.figure.canvas.mpl_connect('pick_event', self._on_pick)
def set_cmap(self, cmap):
""" Change the color map
Parameters
----------
self: type
description
cmap: `matplotlib.colors.ColorMap`
a color map, e.g. from `matplotlib.pyplot.cm.*`
"""
self.pixels.set_cmap(cmap)
def set_image(self, image):
"""
Change the image displayed on the Camera.
Parameters
----------
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
"""
image = np.asanyarray(image)
if image.shape != self.geom.pix_x.shape:
raise ValueError("Image has a different shape {} than the"
"given CameraGeometry {}"
.format(image.shape, self.geom.pix_x.shape))
self.pixels.set_array(image)
self.update()
def update(self):
""" signal a redraw if necessary """
if self.autoupdate:
plt.draw()
def add_colorbar(self):
""" add a colobar to the camera plot """
self.axes.figure.colorbar(self.pixels)
def add_ellipse(self, centroid, length, width, angle, asymmetry=0.0,
**kwargs):
"""
plot an ellipse on top of the camera
Parameters
----------
centroid: (float,float)
position of centroid
length: float
major axis
width: float
minor axis
angle: float
rotation angle wrt "up" about the centroid, clockwise, in radians
asymmetry: float
3rd-order moment for directionality if known
kwargs:
any MatPlotLib style arguments to pass to the Ellipse patch
"""
ellipse = Ellipse(xy=centroid, width=width, height=length,
angle=np.degrees(angle), fill=False, **kwargs)
self.axes.add_patch(ellipse)
self.update()
return ellipse
def overlay_moments(self, momparams, **kwargs):
"""helper to overlay ellipse from a `reco.MomentParameters` structure
Parameters
----------
momparams: `reco.MomentParameters`
structuring containing Hillas-style parameterization
kwargs: key=value
any style keywords to pass to matplotlib (e.g. color='red'
or linewidth=6)
"""
el = self.add_ellipse(centroid=(momparams.cen_x, momparams.cen_y),
length=momparams.length,
width=momparams.width, angle=momparams.psi,
**kwargs)
self.axes.text(momparams.cen_x, momparams.cen_y,
("({:.02f},{:.02f})\n"
"[w={:.02f},l={:.02f}]")
.format(momparams.cen_x,
momparams.cen_y,
momparams.width, momparams.length),
color=el.get_edgecolor())
def _on_pick(self, event):
""" handler for when a pixel is clicked """
pix_id = event.ind.pop()
xx, yy = u.Quantity(self.geom.pix_x[pix_id]).value,\
u.Quantity(self.geom.pix_y[pix_id]).value
self._active_pixel.xy = (xx, yy)
self._active_pixel.set_visible(True)
self._active_pixel_label.set_x(xx)
self._active_pixel_label.set_y(yy)
self._active_pixel_label.set_text("{:003d}".format(pix_id))
self._active_pixel_label.set_visible(True)
self.update()
self.on_pixel_clicked(pix_id) # call user-function
def on_pixel_clicked(self, pix_id):
"""virtual function to overide in sub-classes to do something special
when a pixel is clicked
"""
print("Clicked pixel_id {}".format(pix_id))
class CameraDisplay:
"""Camera Display using matplotlib.
Parameters
----------
geometry : `~ctapipe.io.CameraGeometry`
Definition of the Camera/Image
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
ax : `matplotlib.axes.Axes`
A matplotlib axes object to plot on, or None to create a new one
title : str
Title to put on camera plot
allow_pick : bool (default False)
if True, allow user to click and select a pixel
autoupdate : bool (default True)
redraw automatically (otherwise need to call plt.draw())
antialiased : bool (default True)
whether to draw in antialiased mode or not.
Notes
-----
Speed:
CameraDisplay is not intended to be very fast (matplotlib
is not a very speed performant graphics library, it is
intended for nice output plots). However, most of the
slowness of CameraDisplay is in the constructor. Once one is
displayed, changing the image that is displayed is relatively
fast and efficient. Therefore it is best to initialize an
instance, and change the data, rather than generating new
CameraDisplays.
Pixel Implementation:
Pixels are rendered as a
`matplotlib.collections.PatchCollection` of Polygons (either 6
or 4 sided). You can access the PatchCollection directly (to
e.g. change low-level style parameters) via
`CameraDisplay.pixels`
Output:
Since CameraDisplay uses matplotlib, any display can be
saved to any output file supported via
plt.savefig(filename). This includes `.pdf` and `.png`.
"""
def __init__(self, geometry, image=None, ax=None, title="Camera",
allow_pick=False, autoupdate=True, antialiased=True):
self.axes = ax if ax is not None else plt.gca()
self.geom = geometry
self.pixels = None
self.autoupdate = autoupdate
self._active_pixel = None
self._active_pixel_label = None
# initialize the plot and generate the pixels as a
# RegularPolyCollection
patches = []
for xx, yy, aa in zip(u.Quantity(self.geom.pix_x).value,
u.Quantity(self.geom.pix_y).value,
u.Quantity(np.array(self.geom.pix_area))):
if self.geom.pix_type.startswith("hex"):
rr = sqrt(aa * 2 / 3 / sqrt(3))
poly = RegularPolygon((xx, yy), 6, radius=rr,
orientation=np.radians(0),
fill=True)
else:
rr = sqrt(aa)
poly = Rectangle((xx, yy), width=rr, height=rr,
angle=np.radians(0),
fill=True)
patches.append(poly)
self.pixels = PatchCollection(patches, cmap='hot', linewidth=0)
self.axes.add_collection(self.pixels)
# Set up some nice plot defaults
self.axes.set_aspect('equal', 'datalim')
self.axes.set_title(title)
self.axes.set_xlabel("X position ({})".format(self.geom.pix_x.unit))
self.axes.set_ylabel("Y position ({})".format(self.geom.pix_y.unit))
self.axes.autoscale_view()
# set up a patch to display when a pixel is clicked (and
# pixel_picker is enabled):
self._active_pixel = copy.copy(patches[0])
self._active_pixel.set_facecolor('r')
self._active_pixel.set_alpha(0.5)
self._active_pixel.set_linewidth(2.0)
self._active_pixel.set_visible(False)
self.axes.add_patch(self._active_pixel)
self._active_pixel_label = plt.text(self._active_pixel.xy[0],
self._active_pixel.xy[1],
"0",
horizontalalignment='center',
verticalalignment='center')
self._active_pixel_label.set_visible(False)
# enable ability to click on pixel and do something (can be
# enabled on-the-fly later as well:
if allow_pick:
self.enable_pixel_picker()
if image is not None:
self.image = image
else:
self.image = np.zeros_like(self.geom.pix_id, dtype=np.float)
def enable_pixel_picker(self):
""" enable ability to click on pixels """
self.pixels.set_picker(True) # enable click
self.pixels.set_pickradius(sqrt(u.Quantity(self.geom.pix_area[0])
.value) / np.pi)
self.pixels.set_snap(True) # snap cursor to pixel center
self.axes.figure.canvas.mpl_connect('pick_event', self._on_pick)
def set_limits_minmax(self, zmin, zmax):
""" set the color scale limits from min to max """
self.pixels.set_clim(zmin, zmax)
self.update()
def set_limits_percent(self, percent=95):
""" auto-scale the color range to percent of maximum """
zmin = self.pixels.get_array().min()
zmax = self.pixels.get_array().max()
dz = zmax - zmin
frac = percent / 100.0
self.set_limits_minmax(zmin, zmax - (1.0 - frac) * dz)
@property
def cmap(self):
return self.pixels.get_cmap()
@cmap.setter
def cmap(self, cmap):
""" Change the color map
Parameters
----------
self: type
description
cmap: `matplotlib.colors.ColorMap`
a color map, e.g. from `matplotlib.pyplot.cm.*`
"""
self.pixels.set_cmap(cmap)
self.update()
@property
def image(self):
return self.pixels.get_array()
@image.setter
def image(self, image):
"""
Change the image displayed on the Camera.
Parameters
----------
image: array_like
array of values corresponding to the pixels in the CameraGeometry.
"""
image = np.asanyarray(image)
if image.shape != self.geom.pix_x.shape:
raise ValueError(
"Image has a different shape {} than the"
"given CameraGeometry {}"
.format(image.shape, self.geom.pix_x.shape)
)
self.pixels.set_array(image)
self.axes._sci(self.pixels)
self.update()
def set_image(self, image):
logger.warn("set_image(x) is deprecated:"
" use CameraDisplay.image = x instead")
self.image = image
def update(self):
""" signal a redraw if necessary """
if self.autoupdate:
plt.draw()
def add_colorbar(self):
""" add a colobar to the camera plot """
self.axes.figure.colorbar(self.pixels)
def add_ellipse(self, centroid, length, width, angle, asymmetry=0.0,
**kwargs):
"""
plot an ellipse on top of the camera
Parameters
----------
centroid: (float,float)
position of centroid
length: float
major axis
width: float
minor axis
angle: float
rotation angle wrt "up" about the centroid, clockwise, in radians
asymmetry: float
3rd-order moment for directionality if known
kwargs:
any MatPlotLib style arguments to pass to the Ellipse patch
"""
ellipse = Ellipse(xy=centroid, width=width, height=length,
angle=np.degrees(angle), fill=False, **kwargs)
self.axes.add_patch(ellipse)
self.update()
return ellipse
def overlay_moments(self, momparams, **kwargs):
"""helper to overlay ellipse from a `reco.MomentParameters` structure
Parameters
----------
momparams: `reco.MomentParameters`
structuring containing Hillas-style parameterization
kwargs: key=value
any style keywords to pass to matplotlib (e.g. color='red'
or linewidth=6)
"""
el = self.add_ellipse(centroid=(momparams.cen_x, momparams.cen_y),
length=momparams.length,
width=momparams.width, angle=momparams.psi,
**kwargs)
self.axes.text(momparams.cen_x, momparams.cen_y,
("({:.02f},{:.02f})\n"
"[w={:.02f},l={:.02f}]")
.format(momparams.cen_x,
momparams.cen_y,
momparams.width, momparams.length),
color=el.get_edgecolor())
def _on_pick(self, event):
""" handler for when a pixel is clicked """
pix_id = event.ind.pop()
xx, yy = u.Quantity(self.geom.pix_x[pix_id]).value,\
u.Quantity(self.geom.pix_y[pix_id]).value
self._active_pixel.xy = (xx, yy)
self._active_pixel.set_visible(True)
self._active_pixel_label.set_x(xx)
self._active_pixel_label.set_y(yy)
self._active_pixel_label.set_text("{:003d}".format(pix_id))
self._active_pixel_label.set_visible(True)
self.update()
self.on_pixel_clicked(pix_id) # call user-function
def on_pixel_clicked(self, pix_id):
"""virtual function to overide in sub-classes to do something special
when a pixel is clicked
"""
print("Clicked pixel_id {}".format(pix_id))
