Re: [Geotools-gt2-users] VectorToRasterProcess - Geometries do not overlap

[Michael B. <mic...@gm...>]

Hello Mario,

There was the following Jira issue involving alignment of the input
vectors and output raster last year, but I thought I'd fixed it and
put some unit tests in place.

http://jira.codehaus.org/browse/GEOT-3510

I've no suggestion as to what's happening with your case. Polygons are
rasterized by using AWT drawing routines, so perhaps it is something
nasty to do with anti-aliasing settings ? That is nothing more than a
guess.

Can I ask you to have a look at the unit tests for vector to raster
conversion and see if your own case has any particular properties that
are not covered by the existing tests. Even better would be if you
could turn your example into a small test case and attach it to a Jira
issue.

I'm afraid I can't promise when I will get to this - I'm unable to
spend time on GeoTools development at the moment. However, someone
else here might have a suggestion or have experienced the same
problem.

Michael



On 3 May 2012 19:37, Mario Haertwig <mar...@gm...> wrote:
> Dear GeoTools-users,
> I am trying to perform a vector to raster conversion in GeoTools 2.7.4
> by using the following command:
>
>
>  GridCoverage2D raster = VectorToRasterProcess.process(collection,
>              "test", new Dimension(100,100), collection.getBounds(),
> "mask", null);
>
>  // (output)
>  GeoTiffWriter gt = new GeoTiffWriter(new File("d:/test.tif"));
>  gt.write(raster, null);
>
>
> As you can see in the image at [1], the the created raster does not
> exactly overlap the input feature. It seem to be shifted to the left.
> What is the reason for this?
> Thanks a lot,
> Mario
>
> [1] http://tinypic.com/r/107m9na/6
>
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