Re: [Geotools-gt2-users] Creating GeoTiff from an int[][]

[Jan V. <jvo...@gm...>]

Hi Michael and Andrea,

Thanks for the hint, that makes more sense. But it didn't solve the problem
- still array out of bounds.
I tried a few things and found that it works when i change the sample model
to 10 x 10 size (data matrix is 100 x 100):

SampleModel model = new BandedSampleModel(DataBuffer.TYPE_INT, 10, 10, 1);

Now if i change the sample model to 11 x 11 for example (or more, 20x20 or
100x100), i get an out of bounds exception.
...

Actually, it seems that my problem is not only about this technical detail -
i think i need more general advise:

Basically, my input is a simple 2D map with simple lines on it. A line
represents a "wall". Everything else is "ground". So there are only 2
categories of data, which should be colored in 2 colors.
The 2D map can be internally represented in any way - eg. 2D array of int,
2D buffered image with colors, etc.
The output should be a GeoTiff file with a rendered image and geo tags.

So far, I have tried the approach described earlier (2D array of int). Do
you think it is the right way of doing it?

I have also tried building an RGB buffered image and encoding the
"wall/ground" distinction in the value of "red" (e.g. 0 = ground, 255 =
wall). That grid coverage was created successfully, but I could not manage
to get a "geophysics" view of the grid coverage. It would get a
NullPointerException and this problem would occur every time when writing a
GeoTiff. Other types of view ("rendered", ...) would work fine.

I would really appreciate any hits as to which direction should i take? I
did read a lot of the articles and docs on GeoTools, but still feel rather
uncertain.

Thanks a lot for your help.
Best,

Jan