def _plot_default(self):
# Create starting points for the vectors.
numpts = self.numpts
x = sort(random(numpts))
y = random(numpts)
# Create vectors.
vectorlen = self.vectorlen
vectors = array(
(random(numpts) * vectorlen, random(numpts) * vectorlen)).T
data = ArrayPlotData()
data.set_data('index', x)
data.set_data('value', y)
data.set_data('vectors', vectors)
quiverplot = Plot(data)
quiverplot.quiverplot(('index', 'value', 'vectors'))
# Attach some tools to the plot
quiverplot.tools.append(PanTool(quiverplot, constrain_key="shift"))
zoom = ZoomTool(quiverplot)
quiverplot.overlays.append(zoom)
container = OverlayPlotContainer(quiverplot, padding=50)
return container
def _plot_default(self):
# Create starting points for the vectors.
numpts = self.numpts
x = sort(random(numpts))
y = random(numpts)
# Create vectors.
vectorlen = self.vectorlen
vectors = array((random(numpts)*vectorlen, random(numpts)*vectorlen)).T
data = ArrayPlotData()
data.set_data('index', x)
data.set_data('value', y)
data.set_data('vectors', vectors)
quiverplot = Plot(data)
quiverplot.quiverplot(('index', 'value', 'vectors'))
# Attach some tools to the plot
quiverplot.tools.append(PanTool(quiverplot, constrain_key="shift"))
zoom = ZoomTool(quiverplot)
quiverplot.overlays.append(zoom)
container = OverlayPlotContainer(quiverplot, padding=50)
return container
def _render_quiver_overlay(base_plot, array_plot_data,
line_color="white", line_width=1.0,
arrow_size=5):
if 'vectors' not in array_plot_data.arrays:
return base_plot
quiverplot = Plot(array_plot_data, aspect_ratio = base_plot.aspect_ratio,
default_origin="top left")
quiverplot.quiverplot(("index", "value", "vectors"), name="quiver_plot",
line_color=line_color, line_width=line_width,
arrow_size=arrow_size)
quiverplot.x_grid.visible = False
quiverplot.y_grid.visible = False
quiverplot.range2d = base_plot.range2d
return quiverplot
