def plotHistogram(self, image, plot=None):
if plot == None:
pd = ArrayPlotData(y=np.array([0]), x=np.array([0]))
plot = Plot(pd, padding=(70, 10, 0, 0))
plot.plot(('x', 'y'), name='Histogram', type='bar', bar_width=5.0, color='auto')
#plot.title = 'Histogram'
plot.line_color = 'black'
plot.bgcolor = "white"
plot.fixed_preferred_size = (100, 30)
add_default_grids(plot)
plot.value_axis.title = "Histogram"
self._appendHistogramTools(plot)
'''
plot.overlays.append(PlotAxis(plot, orientation='left'))
plot.overlays.append(PlotAxis(plot, orientation='bottom'))
'''
else:
data = np.histogram(image.data, bins=10000)
index = np.delete(data[1], data[1].size-1)
values = data[0]
plot.index_range.low= np.min(index)
plot.index_range.high = np.max(index)
plot.value_range.low = 0
plot.value_range.high = np.max(values)
plot.data.set_data('x', index)
plot.data.set_data('y', values)
plot.request_redraw()
return plot
def plotHistogram(self, image, plot=None):
'''Plots a histogram.
| image -- Image object
| plot -- plot instance to be updated
| if None, a plot instance will be created
Returns the plot instance.
'''
if plot == None:
pd = ArrayPlotData(y=np.array([0]), x=np.array([0]))
plot = Plot(pd, padding=(70, 10, 0, 0))
plot.plot(('x', 'y'), name='Histogram', type='bar', bar_width=1.0)
plot.line_color = 'black'
plot.bgcolor = "white"
plot.fixed_preferred_size = (100, 30)
add_default_grids(plot)
plot.value_range.low = 'auto'
plot.value_range.high = 'auto'
plot.index_range.low = 'auto'
plot.index_range.high = 'auto'
plot.value_axis.title = "Histogram"
self.appendHistogramTools(plot)
else:
data = np.histogram(image.data, bins=10000)
index = np.delete(data[1], data[1].size-1)
values = data[0]
self.setData(values, index, plot)
plot.invalidate_and_redraw()
return plot