Hi Andrea,
Thank you for the answer.
I have implemented a simple solution in order to fix that:
DirectPosition2D destDirectPosition2D = new DirectPosition2D();
try {
CoordinateReferenceSystem sourceCrs = CRS.decode("EPSG:" + srs);
CoordinateReferenceSystem targetCrs = CRS.decode("EPSG:4326");
// WGS84
destDirectPosition2D.setCoordinateReferenceSystem(targetCrs);
MathTransform mathTransform = CRS.findMathTransform(sourceCrs,
targetCrs, true);
DirectPosition2D srcDirectPosition2D = null;
if
(sourceCrs.getCoordinateSystem().getAxis(0).getDirection().name().equals("EAST"))
srcDirectPosition2D = new DirectPosition2D(sourceCrs,
punto.getX(), punto.getY());
else
srcDirectPosition2D = new DirectPosition2D(sourceCrs,
punto.getY(), punto.getX());
try {
mathTransform.transform(srcDirectPosition2D,
destDirectPosition2D);
} catch (Exception e) {
e.printStackTrace();
}
double pos1 = destDirectPosition2D.y;
double pos2 = destDirectPosition2D.x;
} catch (Exception e) {
e.printStackTrace();
}
return destDirectPosition2D;
Thanks in advance!
2017-10-17 10:18 GMT+02:00 Andrea Aime <andrea.a...@geo-solutions.it>:
> Hi,
> EPSG:3879 is a CRS that is supposedly in North/East order, and GeoTools
> will respect that order
> unless you took explicit actions to force a east/north interpretation.
> So are you giving the input point in that order?
>
> It's difficult to give more advice just looking at a code snippet, if the
> above does not solve the issue
> please share a fully self contained main method that we can run locally,
> along with the version of
> GeoTools that you're using.
>
> Cheers
> Andrea
>
> On Tue, Oct 17, 2017 at 10:05 AM, Cris Lacumba <cris.lacu...@gmail.com>
> wrote:
>
>> Hi to all,
>>
>> We are using the following method in order to transform one point from a
>> certain CRS to EPSG 4326 and it correctly works until now.
>> However, when having as an input the CRS 3879, it gives as a result
>> 90.0,25.0, and it is not correct. It does not give an error, but the result
>> is not correct.
>>
>> Do you know what is happening?
>>
>> Thanks you!
>>
>> Cris
>> ------
>>
>> DirectPosition2D destDirectPosition2D = new DirectPosition2D();
>> try {
>> CoordinateReferenceSystem sourceCrs = CRS.decode("EPSG:" +
>> srs);
>> CoordinateReferenceSystem targetCrs =
>> CRS.decode("EPSG:4326"); // WGS84
>>
>> MathTransform mathTransform = CRS.findMathTransform(sourceCrs,
>> targetCrs, true);
>> DirectPosition2D srcDirectPosition2D = new
>> DirectPosition2D(sourceCrs, punto.getX(), punto.getY());
>>
>> try {
>> mathTransform.transform(srcDirectPosition2D,
>> destDirectPosition2D);
>> } catch (Exception e) {
>> e.printStackTrace();
>> }
>>
>> double pos1 = destDirectPosition2D.y;
>> double pos2 = destDirectPosition2D.x;
>>
>>
>> ------------------------------------------------------------
>> ------------------
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>>
>
>
> --
>
> Regards,
>
> Andrea Aime
>
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