def draw(self, event):
self.bm = wx.EmptyBitmap(self.GetSizeTuple()[0], self.GetSizeTuple()[1])
dc = wx.MemoryDC(self.bm)
os.environ['GKSconid'] = "%x!%x" % (get_address(repr(self)), get_address(repr(dc)))
dc.SetBackground(wx.WHITE_BRUSH)
dc.Clear()
dc.DrawText("Surface Plot using wxWidgets ...", 15, 15)
x = range(1, 481)
y = range(1, 481)
w, h, d = gr.readimage(
os.path.join(os.path.dirname(os.path.realpath(__file__)),
'surf.png'))
z = map(lambda x: x & 0xff, d)
gr.setviewport(0, 1, 0, 1)
gr.setwindow(1, 480, 1, 480)
gr.setspace(1, 1000, 30, 80)
gr.setcolormap(3)
gr.surface(x, y, z, 6)
gr.contour(x, y, range(1), z, 0)
gr.updatews()
self.Refresh()
event.Skip()
def expose(self, widget, event):
cr = widget.window.cairo_create()
environ["GKS_WSTYPE"] = "142"
pc = PyCairoContext.from_address(id(cr))
environ['GKSconid'] = "%lu" % pc.ctx
cr.move_to(15, 15)
cr.set_font_size(14)
cr.show_text("Contour Plot using Gtk ...")
seed(0)
xd = uniform(-2, 2, 100)
yd = uniform(-2, 2, 100)
zd = xd * np.exp(-xd**2 - yd**2)
gr.setviewport(0.15, 0.95, 0.1, 0.9)
gr.setwindow(-2, 2, -2, 2)
gr.setspace(-0.5, 0.5, 0, 90)
gr.setmarkersize(1)
gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
gr.setcharheight(0.024)
gr.settextalign(2, 0)
gr.settextfontprec(3, 0)
x, y, z = gr.gridit(xd, yd, zd, 200, 200)
h = np.linspace(-0.5, 0.5, 20)
gr.surface(x, y, z, 5)
gr.contour(x, y, h, z, 0)
gr.polymarker(xd, yd)
gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01)
gr.updatews()
def draw(self):
if not self._draw_graphics:
return
x = range(0, 128)
y = range(0, 128)
z = readfile(os.path.join(os.path.dirname(os.path.realpath(__file__)), "kws.dat"), separator="$")
zrange = max(z) - min(z)
h = [min(z) + i * 0.025 * zrange for i in range(0, 40)]
gr.setviewport(0.075, 0.95, 0.075, 0.95)
gr.setwindow(1, 128, 1, 128)
gr.setspace(min(z), max(z), 0, 90)
gr.setcharheight(0.018)
gr.setcolormap(-3)
gr.surface(x, y, z, 5)
gr.contour(x, y, h, z, -1)
gr.axes(5, 5, 1, 1, 2, 2, 0.0075)
def draw(self):
if not self._draw_graphics:
return
x = range(0, 128)
y = range(0, 128)
z = readfile(os.path.join(os.path.dirname(os.path.realpath(__file__)),
"kws.dat"), separator='$')
zrange = max(z) - min(z)
h = [min(z) + i * 0.025 * zrange for i in range(0, 40)]
gr.setviewport(0.075, 0.95, 0.075, 0.95)
gr.setwindow(1, 128, 1, 128)
gr.setspace(min(z), max(z), 0, 90)
gr.setcharheight(0.018)
gr.setcolormap(-3)
gr.surface(x, y, z, 5)
gr.contour(x, y, h, z, -1)
gr.axes(5, 5, 1, 1, 2, 2, 0.0075)
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 _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)
_draw_axes(kind)
gr.setcolormap(_plt.kwargs.get('colormap', gr.COLORMAP_COOLWARM))
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)):
gr.setfillcolorind(989)
gr.setfillintstyle(gr.INTSTYLE_SOLID)
gr.fillrect(x[i-1], x[i], y_min, y[i])
gr.setfillcolorind(1)
gr.setfillintstyle(gr.INTSTYLE_HOLLOW)
gr.fillrect(x[i-1], x[i], y_min, y[i])
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':
if x.shape == y.shape == z.shape:
x, y, z = gr.gridit(x, y, z, 200, 200)
z.shape = (200, 200)
if _plt.kwargs['scale'] & gr.OPTION_Z_LOG != 0:
z = np.log(z)
width, height = z.shape
data = np.array(1000+(z-z.min()) / z.ptp() * 255, np.int32)
x_min, x_max = _plt.kwargs['xrange']
y_min, y_max = _plt.kwargs['yrange']
gr.cellarray(x_min, x_max, y_max, y_min, width, height, data)
_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.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)
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
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)
#!/usr/bin/env python """ Create a contour plot of irregular distributed data """ import numpy as np import gr np.random.seed(0) xd = np.random.uniform(-2, 2, 100) yd = np.random.uniform(-2, 2, 100) zd = xd * np.exp(-xd**2 - yd**2) gr.setviewport(0.1, 0.95, 0.1, 0.95) gr.setwindow(-2, 2, -2, 2) gr.setspace(-0.5, 0.5, 0, 90) gr.setmarkersize(1) gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE) gr.setcharheight(0.024) gr.settextalign(2, 0) gr.settextfontprec(3, 0) x, y, z = gr.gridit(xd, yd, zd, 200, 200) h = np.linspace(-0.5, 0.5, 20) gr.surface(x, y, z, 5) gr.contour(x, y, h, z, 0) gr.polymarker(xd, yd) gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01) gr.updatews()
stream = pa.open(format=pa.get_format_from_width(wf.getsampwidth()),
channels=wf.getnchannels(), rate=wf.getframerate(), output=True)
spectrum = np.zeros((256, 64), dtype=float)
t = -63
dt = float(SAMPLES) / FS
df = FS / float(SAMPLES) / 2 / 2
data = wf.readframes(SAMPLES)
while data != '' and len(data) == SAMPLES * wf.getsampwidth():
stream.write(data)
amplitudes = np.fromstring(data, dtype=np.short)
power = abs(np.fft.fft(amplitudes / 32768.0))[:SAMPLES/2]
gr.clearws()
spectrum[:, 63] = power[:256]
spectrum = np.roll(spectrum, 1)
gr.setcolormap(-113)
gr.setviewport(0.05, 0.95, 0.1, 1)
gr.setwindow(t * dt, (t + 63) * dt, 0, df)
gr.setscale(gr.OPTION_FLIP_X)
gr.setspace(0, 256, 30, 80)
gr3.surface((t + np.arange(64)) * dt, np.linspace(0, df, 256), spectrum, 4)
gr.setscale(0)
gr.axes3d(0.2, 0.2, 0, (t + 63) * dt, 0, 0, 5, 5, 0, -0.01)
gr.titles3d('t [s]', 'f [kHz]', '')
gr.updatews()
data = wf.readframes(SAMPLES)
t += 1
q = np.zeros(width * height).astype(np.complex128)
output = calc_fractal(q, min_x, max_x, min_y, max_y, width, height, iters)
return output
os.environ['PYOPENCL_CTX'] = os.environ.get('PYOPENCL_CTX', '0')
x = -0.9223327810370947027656057193752719757635
y = 0.3102598350874576432708737495917724836010
f = 0.5
for i in range(200):
start = timer()
pixels = create_fractal(x - f, x + f, y - f, y + f, 500, 500, 400)
dt = timer() - start
print("Mandelbrot created in %f s" % dt)
gr.clearws()
gr.setviewport(0, 1, 0, 1)
gr.setcolormap(113)
z = np.resize(pixels, (500, 500))
gr.setwindow(0, 500, 0, 500)
gr.setspace(0, 600, 30, 80)
gr3.surface(range(500), range(500), z, 3)
gr.updatews()
f *= 0.9
import gr
import gr3
import numpy as np
from scipy.spatial import Delaunay
# Set up example data
radii = np.linspace(0, 1, 20)
angles = np.linspace(0, np.pi * 2, 30)
points = np.zeros((len(angles), len(radii), 3))
points[:, :, 0] = np.cos(angles).reshape(len(angles), 1) * radii.reshape(
1, len(radii))
points[:, :, 1] = np.sin(angles).reshape(len(angles), 1) * radii.reshape(
1, len(radii))
points[:, :, 2] = -radii.reshape(1, len(radii))
points.shape = (len(angles) * len(radii), 3)
points[:, :] = points[:, :] * 0.5 + 0.5
# Perform 2D delaunay triangulation
triangles = Delaunay(points[:, :2]).simplices.copy()
points = points[triangles]
# Set up GR state
gr.setcolormap(1)
gr.clearws()
gr.setspace(points[:, 2].min(), points[:, 2].max(), 0, 0)
# Draw using GR3
gr3.drawtrianglesurface(points)
gr.updatews()
rate=wf.getframerate(),
output=True)
spectrum = np.zeros((256, 64), dtype=float)
t = -63
dt = float(SAMPLES) / FS
df = FS / float(SAMPLES) / 2 / 2
data = wf.readframes(SAMPLES)
while data != '' and len(data) == SAMPLES * wf.getsampwidth():
stream.write(data)
amplitudes = np.frombuffer(data, dtype=np.short)
power = abs(np.fft.fft(amplitudes / 32768.0))[:SAMPLES // 2]
gr.clearws()
spectrum[:, 63] = power[:256]
spectrum = np.roll(spectrum, 1)
gr.setcolormap(-113)
gr.setviewport(0.05, 0.95, 0.1, 1)
gr.setwindow(t * dt, (t + 63) * dt, 0, df)
gr.setscale(gr.OPTION_FLIP_X)
gr.setspace(0, 256, 30, 80)
gr3.surface((t + np.arange(64)) * dt, np.linspace(0, df, 256), spectrum, 4)
gr.setscale(0)
gr.axes3d(0.2, 0.2, 0, (t + 63) * dt, 0, 0, 5, 5, 0, -0.01)
gr.titles3d('t [s]', 'f [kHz]', '')
gr.updatews()
data = wf.readframes(SAMPLES)
t += 1
x = [-2 + i * 0.5 for i in range(0, 29)]
y = [-7 + i * 0.5 for i in range(0, 29)]
z = list(range(0, 841))
for i in range(0, 29):
for j in range(0, 29):
r1 = math.sqrt((x[j] - 5)**2 + y[i]**2)
r2 = math.sqrt((x[j] + 5)**2 + y[i]**2)
z[i * 29 - 1 +
j] = (math.exp(math.cos(r1)) + math.exp(math.cos(r2)) - 0.9) * 25
gr.setcharheight(24.0 / 500)
gr.settextalign(gr.TEXT_HALIGN_CENTER, gr.TEXT_VALIGN_TOP)
gr.textext(0.5, 0.9, "Surface Example")
(tbx, tby) = gr.inqtextext(0.5, 0.9, "Surface Example")
gr.fillarea(tbx, tby)
gr.setwindow(-2, 12, -7, 7)
gr.setspace(-80, 200, 45, 70)
gr.setcharheight(14.0 / 500)
gr.axes3d(1, 0, 20, -2, -7, -80, 2, 0, 2, -0.01)
gr.axes3d(0, 1, 0, 12, -7, -80, 0, 2, 0, 0.01)
gr.titles3d("X-Axis", "Y-Axis", "Z-Axis")
gr.surface(x, y, z, 3)
gr.surface(x, y, z, 1)
gr.updatews()
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)
gr.setcolormap(_plt.kwargs.get('colormap', gr.COLORMAP_COOLWARM))
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)
if x.shape == y.shape == z.shape:
x, y, z = gr.gridit(x, y, z, 200, 200)
z.shape = (200, 200)
if _plt.kwargs['scale'] & gr.OPTION_Z_LOG != 0:
z = np.log(z)
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_range = np.ptp(z)
if z_range > 0:
data = (z - np.min(z)) / z_range * 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)
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()
""" Create a contour plot of irregular distributed data """ from numpy.random import uniform, seed import numpy as np import gr seed(0) xd = uniform(-2, 2, 100) yd = uniform(-2, 2, 100) zd = xd * np.exp(-xd ** 2 - yd ** 2) gr.setviewport(0.1, 0.95, 0.1, 0.95) gr.setwindow(-2, 2, -2, 2) gr.setspace(-0.5, 0.5, 0, 90) gr.setmarkersize(1) gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE) gr.setcharheight(0.024) gr.settextalign(2, 0) gr.settextfontprec(3, 0) x, y, z = gr.gridit(xd, yd, zd, 200, 200) h = np.linspace(-0.5, 0.5, 20) gr.surface(x, y, z, 5) gr.contour(x, y, h, z, 0) gr.polymarker(xd, yd) gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01) gr.updatews()
output = calc_fractal(q, min_x, max_x, min_y, max_y, width, height, iters)
return output
if getenv('PYOPENCL_CTX') == None:
environ['PYOPENCL_CTX'] = '0'
x = -0.9223327810370947027656057193752719757635
y = 0.3102598350874576432708737495917724836010
f = 0.5
for i in range(200):
start = timer()
pixels = create_fractal(x-f, x+f, y-f, y+f, 500, 500, 400)
dt = timer() - start
print("Mandelbrot created in %f s" % dt)
gr.clearws()
gr.setviewport(0, 1, 0, 1)
gr.setcolormap(113)
z = np.resize(pixels, (500, 500))
gr.setwindow(0, 500, 0, 500)
gr.setspace(0, 600, 30, 80)
gr3.surface(range(500), range(500), z, 3)
gr.updatews()
f *= 0.9
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)
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 _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()
