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grid reprojection algorithms

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Subject Author Date
grid reprojection algorithms Hans Olav 07-04-2006
Posted by Hans Olav on July 4, 2006, 6:41 am
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Hi,

Can someone point me to a good algorithm for translating (resampling,
reprojecting) grid-data in one grid to another grid. For example
population numbers from a 0.01 degree latitude-longitude grid to a 100m
UTM grid.

/Hans Olav


Posted by Felix Hebeler on July 5, 2006, 9:01 am
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Hans Olav wrote:
> Hi,
>
> Can someone point me to a good algorithm for translating (resampling,
> reprojecting) grid-data in one grid to another grid. For example
> population numbers from a 0.01 degree latitude-longitude grid to a 100m
> UTM grid.
>
> /Hans Olav
>
not an algorithm, but a tool that does it, free, no strings attached is
landserf by jo wood, a java based GIS.
find it at www.landserf.org
there's only a couple of projections available, but lat/lon and utm is
definately supported. and you can use scripting, if you've got lots of
grids to project.
cheers
felix

Posted by Mississippi Dan on July 8, 2006, 8:49 am
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> Hi,
>
> Can someone point me to a good algorithm for translating
> (resampling,
> reprojecting) grid-data in one grid to another grid. For
> example
> population numbers from a 0.01 degree latitude-longitude
> grid to a 100m
> UTM grid.
>
> /Hans Olav

Try gdalwarp, part of the gdal maptools package. Open
source.
http://www.remotesensing.org/gdal/gdal_utilities.html

I also use Global Mapper. It can do projection translations
also.

Dan



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