John Hunter wrote: > On Tue, Nov 18, 2008 at 9:41 AM, Hrafnkell Pálsson <[EMAIL PROTECTED]> wrote: > >> Ok, I tried your last suggestion and sure enough it worked. >> But it turns out to solve only half of my problem. I'd like to be able to >> restore the background (using the Agg backend) and then use it further, i.e. >> plot on it, without it disappearing. >> >> Elaborating on my real use case, what I want to do is to make a Basemap >> instance, plot the coastlines and other things that are constant in time >> (put marker on the maps for cities, watermark the figure, draw meridians and >> parallels and so on) and save that as a background. >> I would then restore this background and plot "the weather" (open and filled >> contours, quivers and barbs) onto it. I typically have data for some dozens >> of timesteps, so I'd be restoring the background many times. Each time I'd >> > > This should work fine as long as you make the figure frame and axes > frame invisible. Basically, you need to create the figure background, > and the axes background with all the grid lines, tick labels, > coastlines, etc, save it, and then for the new figure make sure all > the stuff you have saved is turned off. I am not a basemap user, but > I know all this stuff is ultimately exposed. Eg for a plain vanilla > axes, you would do > > > fig1 = figure(frameon=False) > ax1 = fig1.add_subplot(111) > > > fig = figure(frameon=False) > ax = fig.add_subplot(111, frameon=false, xticks=[], yticks=[]) > fig.canvas.restore_region(background) > > > This will turn off the rendering of both the background rectangle as > well as all the ticks and their associated labels, ticklines and > gridlines. Perhaps Jeff can advise you vis-a-vis the basemap api what > the equivalent is > > > Don't see why this wouldn't work fine with basemap, as long as you don't call the drawmapboundary method (which will set the axes frame on).
-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 ------------------------------------------------------------------------- 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
