Patrick Marsh wrote: > Hi Everyone, > > First email here... > > I am plotting meteorological data using matplotlib and basemap - and > can do this just fine. However, I would like to backout the > coordinates being used for the contours that are plotted. > > For example, if I were to contour windspeed every 5 m/s and plot this > (which I can do just fine), I would like to save a copy of the lat, > lon pairs as a text file. However, I cannot for the life of me figure > out how to do this. I have a feeling it is pretty simple and I'm just > over looking something that can do this. Any help would be appreciated. > > Thanks, > > -Patrick Marsh > Graduate Student > School of Meteorology > University of Oklahoma
Patrick: contour and contourf return a ContourSet object. ContourSet.collections is a matplotlib LineCollection (for contour) or a PolyCollection (for contourf). You can retrieve the x,y (map projection) coordinates from these, and transfer them back to lat/lon coordinates using the Basemap instance via lons,lats = map(x,y,inverse=True) # map is a Basemap instance. See http://matplotlib.sourceforge.net/doc/html/api/collections_api.html for more info on matplotlib collection objects. HTH, -Jeff > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > ------------------------------------------------------------------------ > > _______________________________________________ > Matplotlib-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Jeffrey S. Whitaker Phone : (303)497-6313 NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449 325 Broadway Boulder, CO, USA 80305-3328 ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Matplotlib-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/matplotlib-users
