On 13 October 2011 01:29, Diego Jesus <[email protected]> wrote:
> Hello,
> I have a set of contour lines with elevation data from which I want to
> extract a greyscale heightmap. I've been searching for a couple of hours and
> I haven't found anything...

Ah grasshopper ! A couple of hours is merely the blink of an eye on
the cosmic timescale of the average open source programming task...

You need to provide more information so that people here can help you.
On the input side: are your contour lines either LineString objects
are something that can be turned into LineStrings ?  On the output
side: were you wanting proper interpolation of values between contours
for the output raster or would simple filling the regions between
contours with a uniform value be ok ?  For true interpolation you
would usually use an algorithm such as Kriging which GeoTools does not
provide.

Also, take a look at this message in the list archives...

http://osgeo-org.1803224.n2.nabble.com/How-can-I-convert-mid-mif-map-to-matrix-of-big-cells-with-average-territory-information-tp1943037p1943037.html

While it is not exactly the same use case that you have it might give
you some ideas or help you get started.

Michael

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