[gdal-dev] concatenated VRT file

[Jan Hartmann]

Not sure if this is possible, but perhaps someone here knows a trick.

I use a VRT file as an index to a large set of detailed, tiled scans of 
the Netherlands, built with gdalbuildvrt. I recently discovered how to 
transform this map on the fly, so that it  exactly aligns to older maps 
in different coordinate systems. It's just a matter of adapting the 
<geotransform> item in the VRT file.

So I can copy the VRT file for every old map, and adapt the 
<geotransform> in each of them. This means that all VRT files will be 
identical, except for the <geotransform> line. The VRT files are quite 
large, because they cover lots of tiles. Can anyone here think of a 
method to do this with one central VRT file, in which only the 
<geotransform> line is plugged that is required for the particular old 
map?  Something like a symbolic link to concatenate the variable and 
stable parts of the VRT file?

Jan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20130806/0bdc214f/attachment-0001.html>