Jason Li wrote: > Hi Jeff, > > Thanks for your help in the past. Just wondering if I can ask another > question. This is with regard to plotting irregularly spaced geophysical > data. > > I have been happy plotting gridded data away using matplotlib/basemap. > Now I want to try irregularly spaced satellite data (swath data), using > the confourf function. Basically to replace our IDL program to make > plots like this: > > http://aurapar2u.ecs.nasa.gov/airscal2/Aqua_AIRS_Level1/AIRIBRAD.005/2008/001/AIRS.2008.01.01.067.L1B.AIRS_Rad.v5.0.0.0.G08003111751.hdf.jpg > > > > > I have not had much luck yet. In the following example, lat and lon are > 2D arrays. > > map = Basemap(projection='cyl', lon_0=0, ax=ax, llcrnrlon=minLon, > llcrnrlat=minLat, urcrnrlon=maxLon, urcrnrlat=maxLat) > x, y = map(lon, lat) > cs = map.contourf(x, y, obs, levels, cmap=myPrettyCmap) > > The error message: > > File > "/usr/local//lib/python2.5/site-packages/matplotlib/toolkits/basemap/basemap.py", > > line 2442, in contourf > xl = xx.compress(condition).tolist() > AttributeError: compress > > > Do you have a good example as how to do this kind of thing? > > thanks >
Jason: contourf expects gridded data. I think you need to use one of the approaches outlined in the cookbook entry http://www.scipy.org/Cookbook/Matplotlib/Gridding_irregularly_spaced_data to grid your data, then plot it. If you'd like to send me a sample of the data, I can show you what I mean. -Jeff -- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX : (303)497-6449 NOAA/OAR/PSD R/PSD1 Email : [EMAIL PROTECTED] 325 Broadway Office : Skaggs Research Cntr 1D-113 Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
