Zane Selvans wrote: > I'm drawing several hundred lines at a time, each consisting of 10-100 > points, and it takes a couple of minutes for them all to display, > which makes me think I must be doing something stupid. > > The function that does the drawing looks like this: > > def plotlinmap(lins, map=None): > if map is None: > map = Basemap() > > map.drawmapboundary(fill_color="white") > map.drawmeridians(range(-180,181,30)), labels=[1,0,0,1]) > map.drawparallels(range(-90,91,30)), labels=[1,0,0,1]) > > for lin in lins: > x,y = map(degrees(lin.longitudes()),degrees(lin.latitudes())) > map.plot(x,y) > > return(map) > > It displays one line at a time, whenever map.plot() is called. Really > I'd like it to just do all the drawing at the end (assuming that would > make the whole process much faster). Is there some way to cleanly > pass map.plot() a big list of lines to draw? I'm sure there is and > I'm just being dense. Argh. > > -- > Zane Selvans > Amateur Earthling > http://zaneselvans.org > [EMAIL PROTECTED] > 303/815-6866 > PGP Key: 55E0815F > > Zane: You can set up a LineCollection like this
lcoll = LineCollection(segments) then add it to the current axes ax = pylab.gca() ax.add_collection(lcoll) (instead of using the Basemap plot method). To make sure the map axes are rescaled properly, you may need to do map.set_axes_limits() afterwards. See the line_collection.py pylab example for more details. -Jeff -- 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 Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
