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[mkgmap-dev] [PATCH v4] contours

From Nop ekkehart at gmx.de on Sat Jul 11 09:06:09 BST 2009


Apollinaris Schoell schrieb:
>     - write a little utility to paste GeoTIFF files together
> gdal tools should be able to do this. 

Yes, the GDAL tools are able to do this, I have to do it this way for 
elevation lines for mapnik rendering.

However, finding a binary build and getting them to run in a windows 
environment is a very tricky affair. You are also required to re-run 
your GDAL script with coordinates matching or exeeding the boundary 
values in the .osm files. Due to the different environments, I have 
given up on calling GDAL tools from Java as I originally planned to.

It would be a great advantage if the merging of data could be integrated 
into the mkgamp Java code so no extensive GDAL environments need to be 
set up. Either directly into the contour generation or as a 
pre-processing tool that takes the boundaries from all .osm files and 
creates a merged DEM file for the outline of all of them.

Would this be possible using the Java imaging library or is there a 
technical catch?


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