On Friday, December 9, 2011, Laat de, Jos (KNMI) <jos.de.l...@knmi.nl>
wrote:
> I am working with (geostationary) satellite data, and one of the things I
want to do is plot a map (coastlines) on top of the satellite image. As an
IDL user I know how to do this in IDL (although in IDL it is a bit of a
hassle), but I don’t seem to be able to figure out how this could be done
in python.
>
>
>
> The satellite data consists of a rectangular field of N by N pixels. The
data is already converted to bitmap RGB values. I have figured out how this
can be written to a bitmap image like PNG or JPG.
>
>
>
> I further figured out how to do the satellite projection in Basemap, and
how to plot Basemap coastlines. However, the Basemap appears to have a
non-transparent background, which overplots all bitmap data if I plot the
Bitmap data first. I had hoped that there would be some transparency
setting in Basemap, but alas.
>
>
>
> (ps. Keep in mind that I do not want to use some contour filling routine
for plotting the satellite data. I want to retain the original N x N pixels
and image size)
What commands are you using to plot the data? drawcoastlines() should only
draw lines. Maybe "hold" is being set to false in your matplotlibrc file
or in your code?
Ben Root
------------------------------------------------------------------------------
Cloud Services Checklist: Pricing and Packaging Optimization
This white paper is intended to serve as a reference, checklist and point of
discussion for anyone considering optimizing the pricing and packaging model
of a cloud services business. Read Now!
http://www.accelacomm.com/jaw/sfnl/114/51491232/
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
