""" Draws a static polar plot. """ # Major library imports from numpy import arange, pi, sin, cos from enthought.enable.example_support import DemoFrame, demo_main # Enthought library imports from enthought.enable.api import Window, Component, ComponentEditor from enthought.traits.api import HasTraits, Instance, false from enthought.traits.ui.api import Item, Group, View # Chaco imports from enthought.chaco.api import create_polar_plot #=============================================================================== # # Create the Chaco plot. #=============================================================================== def _create_plot_component(): # Create theta data numpoints = 5000 low = 0 high = 2*pi theta = arange(low, high, (high-low) / numpoints) # Create the radius data radius = cos(3*theta) # Create a new polar plot with radius and theta data plot = create_polar_plot((radius,theta),color=(0.0,0.0,1.0,1), width=4.0) return plot #=============================================================================== # Attributes to use for the plot view. size=(600,600) title="Simple Polar Plot" #=============================================================================== # # Demo class that is used by the demo.py application. #=============================================================================== class Demo(HasTraits): plot = Instance(Component) traits_view = View( Group( Item('plot', editor=ComponentEditor(size=size), show_label=False), orientation = "vertical"), resizable=True, title=title, width=size[0], height=size[1] ) def _plot_default(self): return _create_plot_component() demo = Demo() #=============================================================================== # Stand-alone frame to display the plot. #=============================================================================== class PlotFrame(DemoFrame): def _create_window(self): # Return a window containing our plots return Window(self, -1, component=_create_plot_component()) if __name__ == "__main__": demo_main(PlotFrame, size=size, title=title) # EOF#######################