Ah - good idea. I implemented the watermark blend, as suggested by Dane, last night and it works fine (and was quick to implement) so thank you.
Cheers, Edward On Thu, Apr 28, 2011 at 9:32 AM, Richard Weait <[email protected]> wrote: > On Tue, Apr 26, 2011 at 11:31 AM, Dane Springmeyer <[email protected]> > wrote: > > On Apr 26, 2011, at 7:39 AM, Edward Sargisson wrote: > > > >> Hi all, > >> I'd like to add copyright information into the lower left corner of the > resulting image - regardless of which part of the Earth the map is showing. > This is mostly to show the OpenStreetMap acknowledgement. > >> > >> Does anybody have an easy method to do this with Mapnik? > [ ... ] > > Edward, > > > > I think the easiest method would be to create a PNG with alpha at the > same size as your tiles, then in python use mapnik's Image.blend() function > to combine the two images. > > > > Here is an example: > http://mapnik-utils.googlecode.com/svn/example_code/watermark/ > > If you prefer to add the copyright information outside of Mapnik, > perhaps for maps that you have already created, imagemagick has a > number of helpful functions. > > http://www.imagemagick.org/Usage/annotating/#anno_on >
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