Re: [Matplotlib-users] 2D polar surface plot

2010-06-18 Thread Friedrich Romstedt
2010/6/16 Michael Droettboom md...@stsci.edu: pcolor runs directly on polar plots just fine.  No need to convert polar to cartesian outside of matplotlib. It's true, but at the expense of pretty much time, since the arcs must be rendered properly. If your data is dense enough in r and phi, a

Re: [Matplotlib-users] 2D polar surface plot

2010-06-16 Thread Michael Droettboom
pcolor runs directly on polar plots just fine. No need to convert polar to cartesian outside of matplotlib. #!/usr/bin/env python from pylab import * import numpy as np # Sampling 60 points in both dimensions T = linspace(0, np.pi * 2, 60) R = linspace(0, 1.0, 60) Z = rand(60,60) # Create a

[Matplotlib-users] 2D polar surface plot

2010-06-15 Thread Stephane GONAUER
Hi, After reading documentations and the matplotlib example I haven’t found a way to graph the plot I want. I am trying to display a radar video (one turn of the antenna at a time). As such I need to plot a polar surface in 2D with a colormap indicating the video intensity. My data

Re: [Matplotlib-users] 2D polar surface plot

2010-06-15 Thread Benjamin Root
Stephane, First off, you probably do not want to use a surface plot. Rather, pcolor might be more appropriate. In addition, if you can take the azimuth-range coordinates and convert that into x-y coordinates, you can then plot a pcolor using just that. The code would look something like so