def mouseEvent(self, type, target, event):
"""transform QMouseEvent to MouseEvent"""
btn_mask = MouseEvent.NO_BUTTON
mod_mask = MouseEvent.NO_MODIFIER
if event.buttons() & QtCore.Qt.LeftButton:
btn_mask |= MouseEvent.LEFT_BUTTON
if event.buttons() & QtCore.Qt.RightButton:
btn_mask |= MouseEvent.RIGHT_BUTTON
# special case: store last btn_mask in MouseEvent of type MOUSE_RELEASE
# to indicate which button has been released.
if (type == MouseEvent.MOUSE_RELEASE
and btn_mask == MouseEvent.NO_BUTTON):
btn_mask = self._last_btn_mask
if event.modifiers() & QtCore.Qt.ShiftModifier:
mod_mask |= MouseEvent.SHIFT_MODIFIER
if event.modifiers() & QtCore.Qt.ControlModifier:
mod_mask |= MouseEvent.CONTROL_MODIFIER
if event.modifiers() & QtCore.Qt.AltModifier:
mod_mask |= MouseEvent.ALT_MODIFIER
if event.modifiers() & QtCore.Qt.MetaModifier:
mod_mask |= MouseEvent.META_MODIFIER
if event.modifiers() & QtCore.Qt.KeypadModifier:
mod_mask |= MouseEvent.KEYPAD_MODIFIER
if event.modifiers() & QtCore.Qt.GroupSwitchModifier:
mod_mask |= MouseEvent.GROUP_SWITCH_MODIFIER
# In order to support multiple plots in one widget
# it is necessary to set the window in respect to the current
# `PlotAxes` below the cursor. Otherwise the window will be determined
# using the internal state machine of ``gr``.
coords = DeviceCoordConverter(target.dwidth, target.dheight)
coords.setDC(event.x(), event.y())
plots = target._getPlotsForPoint(coords.getNDC())
window, scale = None, None
if plots and len(plots) == 1: # unambitious plot
axes = plots[0].getAxes(0) # use first `PlotAxes`
if axes:
window = axes.getWindow()
scale = axes.scale
gr.setscale(axes.scale)
mEvent = MouseEvent(type,
target.dwidth,
target.dheight,
event.x(),
event.y(),
btn_mask,
mod_mask,
window=window,
scale=scale)
# special case:
# save last btn_mask for handling in MouseEvent.MOUSE_RELEASE
self._last_btn_mask = btn_mask
return mEvent
def _draw_legend():
global _plt
viewport = _plt.kwargs['viewport']
num_labels = len(_plt.kwargs['labels'])
location = _plt.kwargs.get('location', 1)
gr.savestate()
gr.selntran(0)
gr.setscale(0)
w = 0
for label in _plt.kwargs['labels']:
tbx, tby = gr.inqtextext(0, 0, label)
w = max(w, tbx[2])
num_lines = len(_plt.args)
h = (num_lines + 1) * 0.03
if location in (8, 9, 10):
px = 0.5 * (viewport[0] + viewport[1] - w)
elif location in (2, 3, 6):
px = viewport[0] + 0.11
else:
px = viewport[1] - 0.05 - w
if location in (5, 6, 7, 10):
py = 0.5 * (viewport[2] + viewport[3] + h) - 0.03
elif location in (3, 4, 8):
py = viewport[2] + h
else:
py = viewport[3] - 0.06
gr.setfillintstyle(gr.INTSTYLE_SOLID)
gr.setfillcolorind(0)
gr.fillrect(px - 0.08, px + w + 0.02, py + 0.03, py - 0.03 * num_lines)
gr.setlinetype(gr.LINETYPE_SOLID)
gr.setlinecolorind(1)
gr.setlinewidth(1)
gr.drawrect(px - 0.08, px + w + 0.02, py + 0.03, py - 0.03 * num_lines)
i = 0
gr.uselinespec(" ")
for (x, y, z, c, spec) in _plt.args:
gr.savestate()
mask = gr.uselinespec(spec)
if mask in (0, 1, 3, 4, 5):
gr.polyline([px - 0.07, px - 0.01], [py, py])
if mask & 2:
gr.polymarker([px - 0.06, px - 0.02], [py, py])
gr.restorestate()
gr.settextalign(gr.TEXT_HALIGN_LEFT, gr.TEXT_VALIGN_HALF)
if i < num_labels:
gr.textext(px, py, _plt.kwargs['labels'][i])
i += 1
py -= 0.03
gr.selntran(1)
gr.restorestate()
def _draw_legend():
global _plt
viewport = _plt.kwargs['viewport']
num_labels = len(_plt.kwargs['labels'])
location = _plt.kwargs.get('location', 1)
gr.savestate()
gr.selntran(0)
gr.setscale(0)
w = 0
for label in _plt.kwargs['labels']:
tbx, tby = gr.inqtextext(0, 0, label)
w = max(w, tbx[2])
num_lines = len(_plt.args)
h = (num_lines + 1) * 0.03
if location in (8, 9, 10):
px = 0.5 * (viewport[0] + viewport[1] - w)
elif location in (2, 3, 6):
px = viewport[0] + 0.11
else:
px = viewport[1] - 0.05 - w
if location in (5, 6, 7, 10):
py = 0.5 * (viewport[2] + viewport[3] + h) - 0.03
elif location in (3, 4, 8):
py = viewport[2] + h
else:
py = viewport[3] - 0.06
gr.setfillintstyle(gr.INTSTYLE_SOLID)
gr.setfillcolorind(0)
gr.fillrect(px - 0.08, px + w + 0.02, py + 0.03, py - 0.03 * num_lines)
gr.setlinetype(gr.LINETYPE_SOLID)
gr.setlinecolorind(1)
gr.setlinewidth(1)
gr.drawrect(px - 0.08, px + w + 0.02, py + 0.03, py - 0.03 * num_lines)
i = 0
gr.uselinespec(" ")
for (x, y, z, c, spec) in _plt.args:
gr.savestate()
mask = gr.uselinespec(spec)
if mask in (0, 1, 3, 4, 5):
gr.polyline([px - 0.07, px - 0.01], [py, py])
if mask & 2:
gr.polymarker([px - 0.06, px - 0.02], [py, py])
gr.restorestate()
gr.settextalign(gr.TEXT_HALIGN_LEFT, gr.TEXT_VALIGN_HALF)
if i < num_labels:
gr.textext(px, py, _plt.kwargs['labels'][i])
i += 1
py -= 0.03
gr.selntran(1)
gr.restorestate()
def mouseEvent(self, type, target, event):
"""transform QMouseEvent to MouseEvent"""
btn_mask = MouseEvent.NO_BUTTON
mod_mask = MouseEvent.NO_MODIFIER
if event.buttons() & QtCore.Qt.LeftButton:
btn_mask |= MouseEvent.LEFT_BUTTON
if event.buttons() & QtCore.Qt.RightButton:
btn_mask |= MouseEvent.RIGHT_BUTTON
# special case: store last btn_mask in MouseEvent of type MOUSE_RELEASE
# to indicate which button has been released.
if (type == MouseEvent.MOUSE_RELEASE and
btn_mask == MouseEvent.NO_BUTTON):
btn_mask = self._last_btn_mask
if event.modifiers() & QtCore.Qt.ShiftModifier:
mod_mask |= MouseEvent.SHIFT_MODIFIER
if event.modifiers() & QtCore.Qt.ControlModifier:
mod_mask |= MouseEvent.CONTROL_MODIFIER
if event.modifiers() & QtCore.Qt.AltModifier:
mod_mask |= MouseEvent.ALT_MODIFIER
if event.modifiers() & QtCore.Qt.MetaModifier:
mod_mask |= MouseEvent.META_MODIFIER
if event.modifiers() & QtCore.Qt.KeypadModifier:
mod_mask |= MouseEvent.KEYPAD_MODIFIER
if event.modifiers() & QtCore.Qt.GroupSwitchModifier:
mod_mask |= MouseEvent.GROUP_SWITCH_MODIFIER
# In order to support multiple plots in one widget
# it is necessary to set the window in respect to the current
# `PlotAxes` below the cursor. Otherwise the window will be determined
# using the internal state machine of ``gr``.
coords = DeviceCoordConverter(target.dwidth, target.dheight)
coords.setDC(event.x(), event.y())
plots = target._getPlotsForPoint(coords.getNDC())
window = None
if plots and len(plots) == 1: # unambitious plot
axes = plots[0].getAxes(0) # use first `PlotAxes`
if axes:
window = axes.getWindow()
gr.setscale(axes.scale)
mEvent = MouseEvent(type, target.dwidth, target.dheight,
event.x(), event.y(), btn_mask, mod_mask,
window=window)
# special case:
# save last btn_mask for handling in MouseEvent.MOUSE_RELEASE
self._last_btn_mask = btn_mask
return mEvent
def _colorbar(off=0.0, colors=256):
global _plt
gr.savestate()
viewport = _plt.kwargs['viewport']
zmin, zmax = _plt.kwargs['zrange']
gr.setwindow(0, 1, zmin, zmax)
gr.setviewport(viewport[1] + 0.02 + off, viewport[1] + 0.05 + off,
viewport[2], viewport[3])
l = [1000+int(255*i/(colors-1)) for i in range(colors)]
gr.cellarray(0, 1, zmax, zmin, 1, colors, l)
diag = ((viewport[1] - viewport[0])**2 + (viewport[3] - viewport[2])**2)**0.5
charheight = max(0.016 * diag, 0.012)
gr.setcharheight(charheight)
if _plt.kwargs['scale'] & gr.OPTION_Z_LOG:
gr.setscale(gr.OPTION_Y_LOG)
gr.axes(0, 2, 1, zmin, 0, 1, 0.005)
else:
ztick = 0.5 * gr.tick(zmin, zmax)
gr.axes(0, ztick, 1, zmin, 0, 1, 0.005)
gr.restorestate()
def _colorbar(off=0.0, colors=256):
global _plt
gr.savestate()
viewport = _plt.kwargs['viewport']
zmin, zmax = _plt.kwargs['zrange']
gr.setwindow(0, 1, zmin, zmax)
gr.setviewport(viewport[1] + 0.02 + off, viewport[1] + 0.05 + off,
viewport[2], viewport[3])
l = [1000+int(255*i/(colors-1)) for i in range(colors)]
gr.cellarray(0, 1, zmax, zmin, 1, colors, l)
diag = ((viewport[1] - viewport[0])**2 + (viewport[3] - viewport[2])**2)**0.5
charheight = max(0.016 * diag, 0.012)
gr.setcharheight(charheight)
if _plt.kwargs['scale'] & gr.OPTION_Z_LOG:
gr.setscale(gr.OPTION_Y_LOG)
gr.axes(0, 2, 1, zmin, 0, 1, 0.005)
else:
ztick = 0.5 * gr.tick(zmin, zmax)
gr.axes(0, ztick, 1, zmin, 0, 1, 0.005)
gr.restorestate()
def _draw_legend():
global _plt
viewport = _plt.kwargs['viewport']
num_labels = len(_plt.kwargs['labels'])
gr.savestate()
gr.selntran(0)
gr.setscale(0)
w = 0
for label in _plt.kwargs['labels']:
tbx, tby = gr.inqtextext(0, 0, label)
w = max(w, tbx[2])
px = viewport[1] - 0.05 - w
py = viewport[3] - 0.06
gr.setfillintstyle(gr.INTSTYLE_SOLID)
gr.setfillcolorind(0)
gr.fillrect(px - 0.08, px + w + 0.02, py + 0.03, py - 0.03 * num_labels)
gr.setlinetype(1)
gr.setlinecolorind(1)
gr.setlinewidth(1)
gr.drawrect(px - 0.08, px + w + 0.02, py + 0.03, py - 0.03 * num_labels)
i = 0
gr.uselinespec(" ")
for (x, y, z, c, spec) in _plt.args:
gr.savestate()
mask = gr.uselinespec(spec)
if mask in (0, 1, 3, 4, 5):
gr.polyline([px - 0.07, px - 0.01], [py, py])
if mask & 2:
gr.polymarker([px - 0.06, px - 0.02], [py, py])
gr.restorestate()
gr.settextalign(gr.TEXT_HALIGN_LEFT, gr.TEXT_VALIGN_HALF)
if i < num_labels:
gr.textext(px, py, _plt.kwargs['labels'][i])
i += 1
py -= 0.03
gr.selntran(1)
gr.restorestate()
spectrum = np.zeros((256, 256), dtype=float)
t = -255
dt = float(SAMPLES) / FS
df = FS / float(SAMPLES) / 2 / 2
start = time.time()
while time.time() - start < 10:
try:
power = get_spectrum()
except (IOError):
continue
gr.clearws()
spectrum[:, 255] = power[:256]
spectrum = np.roll(spectrum, 1)
gr.setcolormap(-113)
gr.setviewport(0.05, 0.95, 0.1, 1)
gr.setwindow(t * dt, (t + 255) * dt, 0, df)
gr.setscale(gr.OPTION_FLIP_X)
gr.setspace(0, 200, 30, 80)
gr3.surface((t + np.arange(256)) * dt, np.linspace(0, df, 256), spectrum,
4)
gr.setscale(0)
gr.axes3d(0.2, 0.2, 0, (t + 255) * dt, 0, 0, 5, 5, 0, -0.01)
gr.titles3d('t [s]', 'f [kHz]', '')
gr.updatews()
t += 1
return abs(np.fft.fft(amplitudes / 32768.0))[:SAMPLES/2]
spectrum = np.zeros((256, 256), dtype=float)
t = -255
dt = float(SAMPLES) / FS
df = FS / float(SAMPLES) / 2 / 2
start = time.time()
while time.time() - start < 10:
try:
power = get_spectrum()
except (IOError):
continue
gr.clearws()
spectrum[:, 255] = power[:256]
spectrum = np.roll(spectrum, 1)
gr.setcolormap(-113)
gr.setviewport(0.05, 0.95, 0.1, 1)
gr.setwindow(t * dt, (t + 255) * dt, 0, df)
gr.setscale(gr.OPTION_FLIP_X)
gr.setspace(0, 200, 30, 80)
gr3.surface((t + np.arange(256)) * dt, np.linspace(0, df, 256), spectrum, 4)
gr.setscale(0)
gr.axes3d(0.2, 0.2, 0, (t + 255) * dt, 0, 0, 5, 5, 0, -0.01)
gr.titles3d('t [s]', 'f [kHz]', '')
gr.updatews()
t += 1
def _set_window(kind):
global _plt
scale = 0
scale |= gr.OPTION_X_LOG if _plt.kwargs.get('xlog', False) else 0
scale |= gr.OPTION_Y_LOG if _plt.kwargs.get('ylog', False) else 0
scale |= gr.OPTION_Z_LOG if _plt.kwargs.get('zlog', False) else 0
scale |= gr.OPTION_FLIP_X if _plt.kwargs.get('xflip', False) else 0
scale |= gr.OPTION_FLIP_Y if _plt.kwargs.get('yflip', False) else 0
scale |= gr.OPTION_FLIP_Z if _plt.kwargs.get('zflip', False) else 0
_minmax()
if kind in ('wireframe', 'surface', 'plot3', 'scatter3'):
major_count = 2
else:
major_count = 5
x_min, x_max = _plt.kwargs['xrange']
if not scale & gr.OPTION_X_LOG:
x_min, x_max = gr.adjustlimits(x_min, x_max)
x_major_count = major_count
x_tick = gr.tick(x_min, x_max) / x_major_count
else:
x_tick = x_major_count = 1
if not scale & gr.OPTION_FLIP_X:
xorg = (x_min, x_max)
else:
xorg = (x_max, x_min)
_plt.kwargs['xaxis'] = x_tick, xorg, x_major_count
y_min, y_max = _plt.kwargs['yrange']
if kind in ('hist', 'stem') and 'ylim' not in _plt.kwargs:
y_min = 0
if not scale & gr.OPTION_Y_LOG:
y_min, y_max = gr.adjustlimits(y_min, y_max)
y_major_count = major_count
y_tick = gr.tick(y_min, y_max) / y_major_count
else:
y_tick = y_major_count = 1
if not scale & gr.OPTION_FLIP_Y:
yorg = (y_min, y_max)
else:
yorg = (y_max, y_min)
_plt.kwargs['yaxis'] = y_tick, yorg, y_major_count
_plt.kwargs['window'] = (x_min, x_max, y_min, y_max)
gr.setwindow(x_min, x_max, y_min, y_max)
if kind in ('wireframe', 'surface', 'plot3', 'scatter3'):
z_min, z_max = _plt.kwargs['zrange']
if not scale & gr.OPTION_Z_LOG:
z_min, z_max = gr.adjustlimits(z_min, z_max)
z_major_count = major_count
z_tick = gr.tick(z_min, z_max) / z_major_count
else:
z_tick = z_major_count = 1
if not scale & gr.OPTION_FLIP_Z:
zorg = (z_min, z_max)
else:
zorg = (z_max, z_min)
_plt.kwargs['zaxis'] = z_tick, zorg, z_major_count
rotation = _plt.kwargs.get('rotation', 40)
tilt = _plt.kwargs.get('tilt', 70)
gr.setspace(z_min, z_max, rotation, tilt)
_plt.kwargs['scale'] = scale
gr.setscale(scale)
pa = pyaudio.PyAudio()
mic = pa.open(format=pyaudio.paInt16, channels=1, rate=FS,
input=True, frames_per_buffer=SAMPLES)
amplitudes = numpy.fromstring(mic.read(SAMPLES), dtype=numpy.short)
return abs(numpy.fft.fft(amplitudes / 32768.0))[:SAMPLES/2]
def parabolic(x, f, i):
xe = 1/2. * (f[i-1] - f[i+1]) / (f[i-1] - 2 * f[i] + f[i+1]) + x
ye = f[i] - 1/4. * (f[i-1] - f[i+1]) * (xe - x)
return xe, ye
f = [FS/float(SAMPLES)*t for t in range(0, SAMPLES//2)]
gr.setviewport(0.1, 0.95, 0.1, 0.95)
gr.setwindow(50, 25000, 0, 100)
gr.setscale(1)
start = time.time()
while time.time() - start < 10:
try:
power = get_spectrum()
peakind = signal.find_peaks_cwt(power, numpy.array([5]))
except (IOError):
continue
gr.clearws()
gr.setlinewidth(1)
gr.setlinecolorind(1)
gr.grid(1, 5, 50, 0, 1, 2)
gr.axes(1, 5, 50, 0, 1, 2, -0.008)
def _plot_data(**kwargs):
global _plt
_plt.kwargs.update(kwargs)
if not _plt.args:
return
kind = _plt.kwargs.get('kind', 'line')
if _plt.kwargs['clear']:
gr.clearws()
if kind in ('imshow', 'isosurface'):
_set_viewport(kind, _plt.kwargs['subplot'])
elif not _plt.kwargs['ax']:
_set_viewport(kind, _plt.kwargs['subplot'])
_set_window(kind)
if kind == 'polar':
_draw_polar_axes()
else:
_draw_axes(kind)
if 'cmap' in _plt.kwargs:
warnings.warn('The parameter "cmap" has been replaced by "colormap". The value of "cmap" will be ignored.', stacklevel=3)
colormap = _plt.kwargs.get('colormap', gr.COLORMAP_VIRIDIS)
if colormap is not None:
gr.setcolormap(colormap)
gr.uselinespec(" ")
for x, y, z, c, spec in _plt.args:
gr.savestate()
if 'alpha' in _plt.kwargs:
gr.settransparency(_plt.kwargs['alpha'])
if kind == 'line':
mask = gr.uselinespec(spec)
if mask in (0, 1, 3, 4, 5):
gr.polyline(x, y)
if mask & 2:
gr.polymarker(x, y)
elif kind == 'scatter':
gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
if z is not None or c is not None:
if c is not None:
c_min = c.min()
c_ptp = c.ptp()
for i in range(len(x)):
if z is not None:
gr.setmarkersize(z[i] / 100.0)
if c is not None:
c_index = 1000 + int(255 * (c[i]-c_min)/c_ptp)
gr.setmarkercolorind(c_index)
gr.polymarker([x[i]], [y[i]])
else:
gr.polymarker(x, y)
elif kind == 'stem':
gr.setlinecolorind(1)
gr.polyline(_plt.kwargs['window'][:2], [0, 0])
gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
gr.uselinespec(spec)
for xi, yi in zip(x, y):
gr.polyline([xi, xi], [0, yi])
gr.polymarker(x, y)
elif kind == 'hist':
y_min = _plt.kwargs['window'][2]
for i in range(1, len(y)+1):
gr.setfillcolorind(989)
gr.setfillintstyle(gr.INTSTYLE_SOLID)
gr.fillrect(x[i-1], x[i], y_min, y[i-1])
gr.setfillcolorind(1)
gr.setfillintstyle(gr.INTSTYLE_HOLLOW)
gr.fillrect(x[i-1], x[i], y_min, y[i-1])
elif kind == 'contour':
z_min, z_max = _plt.kwargs['zrange']
gr.setspace(z_min, z_max, 0, 90)
h = [z_min + i/19*(z_max-z_min) for i in range(20)]
if x.shape == y.shape == z.shape:
x, y, z = gr.gridit(x, y, z, 200, 200)
z.shape = np.prod(z.shape)
gr.contour(x, y, h, z, 1000)
_colorbar(0, 20)
elif kind == 'contourf':
z_min, z_max = _plt.kwargs['zrange']
gr.setspace(z_min, z_max, 0, 90)
scale = _plt.kwargs['scale']
gr.setscale(scale)
if x.shape == y.shape == z.shape:
x, y, z = gr.gridit(x, y, z, 200, 200)
z.shape = (200, 200)
gr.surface(x, y, z, gr.OPTION_CELL_ARRAY)
_colorbar()
elif kind == 'hexbin':
nbins = _plt.kwargs.get('nbins', 40)
cntmax = gr.hexbin(x, y, nbins)
if cntmax > 0:
_plt.kwargs['zrange'] = (0, cntmax)
_colorbar()
elif kind == 'heatmap':
x_min, x_max, y_min, y_max = _plt.kwargs['window']
width, height = z.shape
cmap = _colormap()
icmap = np.zeros(256, np.uint32)
for i in range(256):
r, g, b, a = cmap[i]
icmap[i] = (int(r*255) << 0) + (int(g*255) << 8) + (int(b*255) << 16) + (int(a*255) << 24)
z_min, z_max = _plt.kwargs.get('zlim', (np.min(z), np.max(z)))
if z_max < z_min:
z_max, z_min = z_min, z_max
if z_max > z_min:
data = (z - z_min) / (z_max - z_min) * 255
else:
data = np.zeros((width, height))
rgba = np.zeros((width, height), np.uint32)
for x in range(width):
for y in range(height):
rgba[x, y] = icmap[int(data[x, y])]
gr.drawimage(x_min, x_max, y_min, y_max, width, height, rgba)
_colorbar()
elif kind == 'wireframe':
if x.shape == y.shape == z.shape:
x, y, z = gr.gridit(x, y, z, 50, 50)
gr.setfillcolorind(0)
z.shape = np.prod(z.shape)
gr.surface(x, y, z, gr.OPTION_FILLED_MESH)
_draw_axes(kind, 2)
elif kind == 'surface':
if x.shape == y.shape == z.shape:
x, y, z = gr.gridit(x, y, z, 200, 200)
z.shape = np.prod(z.shape)
if _plt.kwargs.get('accelerate', True):
gr3.clear()
gr3.surface(x, y, z, gr.OPTION_COLORED_MESH)
else:
gr.surface(x, y, z, gr.OPTION_COLORED_MESH)
_draw_axes(kind, 2)
_colorbar(0.05)
elif kind == 'plot3':
gr.polyline3d(x, y, z)
_draw_axes(kind, 2)
elif kind == 'scatter3':
gr.polymarker3d(x, y, z)
_draw_axes(kind, 2)
elif kind == 'imshow':
_plot_img(z)
elif kind == 'isosurface':
_plot_iso(z)
elif kind == 'polar':
gr.uselinespec(spec)
_plot_polar(x, y)
elif kind == 'trisurf':
gr.trisurface(x, y, z)
_draw_axes(kind, 2)
_colorbar(0.05)
elif kind == 'tricont':
zmin, zmax = _plt.kwargs['zrange']
levels = np.linspace(zmin, zmax, 20)
gr.tricontour(x, y, z, levels)
gr.restorestate()
if kind in ('line', 'scatter', 'stem') and 'labels' in _plt.kwargs:
_draw_legend()
if _plt.kwargs['update']:
gr.updatews()
if gr.isinline():
return gr.show()
def _set_window(kind):
global _plt
scale = 0
if kind != 'polar':
scale |= gr.OPTION_X_LOG if _plt.kwargs.get('xlog', False) else 0
scale |= gr.OPTION_Y_LOG if _plt.kwargs.get('ylog', False) else 0
scale |= gr.OPTION_Z_LOG if _plt.kwargs.get('zlog', False) else 0
scale |= gr.OPTION_FLIP_X if _plt.kwargs.get('xflip', False) else 0
scale |= gr.OPTION_FLIP_Y if _plt.kwargs.get('yflip', False) else 0
scale |= gr.OPTION_FLIP_Z if _plt.kwargs.get('zflip', False) else 0
_minmax()
if kind in ('wireframe', 'surface', 'plot3', 'scatter3', 'polar', 'trisurf'):
major_count = 2
else:
major_count = 5
x_min, x_max = _plt.kwargs['xrange']
if not scale & gr.OPTION_X_LOG:
x_min, x_max = gr.adjustlimits(x_min, x_max)
x_major_count = major_count
x_tick = gr.tick(x_min, x_max) / x_major_count
else:
x_tick = x_major_count = 1
if not scale & gr.OPTION_FLIP_X:
xorg = (x_min, x_max)
else:
xorg = (x_max, x_min)
_plt.kwargs['xaxis'] = x_tick, xorg, x_major_count
y_min, y_max = _plt.kwargs['yrange']
if kind in ('hist', 'stem') and 'ylim' not in _plt.kwargs:
y_min = 0
if not scale & gr.OPTION_Y_LOG:
y_min, y_max = gr.adjustlimits(y_min, y_max)
y_major_count = major_count
y_tick = gr.tick(y_min, y_max) / y_major_count
else:
y_tick = y_major_count = 1
if not scale & gr.OPTION_FLIP_Y:
yorg = (y_min, y_max)
else:
yorg = (y_max, y_min)
_plt.kwargs['yaxis'] = y_tick, yorg, y_major_count
_plt.kwargs['window'] = (x_min, x_max, y_min, y_max)
if kind == 'polar':
gr.setwindow(-1, 1, -1, 1)
else:
gr.setwindow(x_min, x_max, y_min, y_max)
if kind in ('wireframe', 'surface', 'plot3', 'scatter3', 'trisurf'):
z_min, z_max = _plt.kwargs['zrange']
if not scale & gr.OPTION_Z_LOG:
z_min, z_max = gr.adjustlimits(z_min, z_max)
z_major_count = major_count
z_tick = gr.tick(z_min, z_max) / z_major_count
else:
z_tick = z_major_count = 1
if not scale & gr.OPTION_FLIP_Z:
zorg = (z_min, z_max)
else:
zorg = (z_max, z_min)
_plt.kwargs['zaxis'] = z_tick, zorg, z_major_count
rotation = _plt.kwargs.get('rotation', 40)
tilt = _plt.kwargs.get('tilt', 70)
gr.setspace(z_min, z_max, rotation, tilt)
_plt.kwargs['scale'] = scale
gr.setscale(scale)
frames_per_buffer=SAMPLES)
amplitudes = np.frombuffer(mic.read(SAMPLES), dtype=np.short)
return abs(np.fft.fft(amplitudes / 32768.0))[:SAMPLES // 2]
def parabolic(x, f, i):
xe = 1 / 2. * (f[i - 1] - f[i + 1]) / (f[i - 1] - 2 * f[i] + f[i + 1]) + x
ye = f[i] - 1 / 4. * (f[i - 1] - f[i + 1]) * (xe - x)
return xe, ye
f = [FS / float(SAMPLES) * t for t in range(0, SAMPLES // 2)]
gr.setviewport(0.1, 0.95, 0.1, 0.95)
gr.setwindow(50, 25000, 0, 100)
gr.setscale(1)
start = time.time()
while time.time() - start < 10:
try:
power = get_spectrum()
peakind = signal.find_peaks_cwt(power, np.array([5]))
except (IOError):
continue
gr.clearws()
gr.setlinewidth(1)
gr.setlinecolorind(1)
gr.grid(1, 5, 50, 0, 1, 2)
gr.axes(1, 5, 50, 0, 1, 2, -0.008)
