Re: [matplotlib-devel] basemap drawcoastlines: suppress legend label

2008-03-13 Thread Jeff Whitaker
Eric Firing wrote: > Jeff, > > When putting a legend on a basemap plot, I find that the legend command > picks up the coastline line collection and gives it an uninformative > label. I suspect this is rarely what one wants. Two suggestions: > > 1) In drawcoastlines, use "coastlines.set_label('_

[matplotlib-devel] pcolor curiosity

2008-03-13 Thread Ryan May
Hi, I've been poking around with pcolor, trying to see what makes it tick, since its performance is biggest thing that drives me nuts about matplotlib. I do pcolor plots of weather radar data with ~10 polygons in them. Unfortunately, these polygons are at best trapezoids, so I can't trea

Re: [matplotlib-devel] pcolor curiosity

2008-03-13 Thread Eric Firing
Ryan, The pcolor implementation is fundamentally unsuited to large arrays. Therefore I made the pcolorfast axes method, which tries to use the fastest available Agg extension code, depending on the characteristics of the spatial grid. If the grid is rectangular and regular in both directions

Re: [matplotlib-devel] pcolor curiosity

2008-03-13 Thread Eric Firing
Shannon Jaeger wrote: > Hi Ryan and Eric, > > I work on software that plots bits and pieces of radio astronomy > data. We've run into similar issues and will be running into > even more related to performance. > > We have datasets that have millions of points, potentially into > the billions in

[matplotlib-devel] QtAgg backend drawing everything twice?

2008-03-13 Thread Ted Drain
I'm working on improving the plotting speed of one of our applications. As part of that, I was looking at how quickly the QtAgg backend is drawing. I added some print out's to the backend and noticed that it seems to be drawing everything twice. In the code: backend_qtagg.py: FigureCanvasQTAgg