Hi Bruce,
Great question. I believe CRS.decode calls out to the classes which
lookup the EPSG codes. Are you including gt-epsg-wkt or gt-epsg-hsql in
the projects? Also, which version of GeoTools are you using? Lastly,
is the server running GeoServer?
Cheers,
Jim
On 01/05/2017 01:35 PM, bikelheimer wrote:
> Happy New Year to all! I've got a frustrating problem. I've created a Java
> application that reads in data from a GeoTiff and then finds points on that
> GeoTiff by converting a Lat/Long coordinate into the local coordinates in
> the GeoTiff. This is accomplished by reading the CRS from the GeoTiff and
> building a MathTransform between that and Lat/Long using the following
> lines:
>
> //Get the native coordinate system from the GeoTiff file
> this.CRSin = reader.getCoordinateReferenceSystem();
>
> //This is the standard WGS 84 CRS
> CoordinateReferenceSystem latlongCRS = CRS.decode("EPSG:4326 ");
> //WGS 84 Lat/Long
>
> //Create the transform from the GeoTiff CRS to Lat/Long
> this.LatLong2tif = CRS.findMathTransform(latlongCRS, this.CRSin,
> true);
>
> I have managed to convert my local java app into a server based app. 99% of
> the code is exactly the same, including all aspects of dealing with the
> coordinate transform. However, when the code runs on the server, it chooses
> a different (and clearly incorrect) MathTransform. I've tried to debug this
> all the way down to the CRS class, but I can't figure out why it should do
> something different.
>
> Both versions correctly identify both CRSs and pass along the exact same
> inputs to find the MathTransform, but they produce different results. Has
> anyone seen this problem?
>
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/MathTransform-changes-on-app-type-tp5302177.html
> Sent from the geotools-gt2-users mailing list archive at Nabble.com.
>
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