It seems odd that you are dealing with java.awt.Rectangles - I'm not sure
where you are getting them from as there is no mention in the code. I
modified your code to this:
public static void main(String[] args) throws IOException {
File input = new
File("/home/ian/code/geotools-cookbook/code/modules/spike/test.png");
AbstractGridFormat format = GridFormatFinder.findFormat(input);
Hints hints = null;
if (format instanceof GeoTiffFormat) {
hints = new Hints(Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER, Boolean.TRUE);
}
AbstractGridCoverage2DReader reader = format.getReader(input, hints);
GridCoverage2D grid = reader.read(null);
System.out.println( grid.getEnvelope2D());
System.out.println( grid.getEnvelope());
reader.dispose();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
GeoTiffWriter writer = new GeoTiffWriter(baos, null);
GeoTiffWriteParams wp = new GeoTiffWriteParams();
//wp.setSourceRegion(grid.getGridGeometry().getGridRange2D().getBounds());
final ParameterValueGroup params = new GeoTiffFormat().getWriteParameters();
params.parameter(AbstractGridFormat.GEOTOOLS_WRITE_PARAMS.getName().toString()).setValue(wp);
writer.write(grid, null/*params.values().toArray(new
GeneralParameterValue[1])*/);
writer.dispose();
byte[] bytes = baos.toByteArray();
//Deserialization:
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
GeoTiffReader reader2 = null;
hints = new Hints(Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER, Boolean.TRUE);
reader2 = new GeoTiffReader(bais, hints);
GridCoverage2D coverage = reader2.read(null);
bais.close();
System.out.println( coverage.getEnvelope2D());
System.out.println( coverage.getEnvelope());
}
which gives me
Envelope2D[(833207.8127810268, 9785025.96070077), (833286.9776217749,
9785090.075567605)]
GeneralEnvelope[(833207.8127810268, 9785025.96070077),
(833286.9776217749, 9785090.075567605)]
Envelope2D[(833207.8127810268, 9785025.96070077), (833286.9776217749,
9785090.075567605)]
GeneralEnvelope[(833207.8127810268, 9785025.96070077),
(833286.9776217749, 9785090.075567605)]
Where the bounds of the output and input grid match exactly.
Ian
On Thu, 7 Jan 2021 at 16:28, Lorenzo Di Giacomo <loridi...@gmail.com> wrote:
> Both X and Y are set to 0, in every GridCoverage2D deserialized.
> I think that maybe some READ_GRIDCOVERAGE2D parameters are needed (?)
> Original: java.awt.Rectangle[x=209,y=333,width=334,height=148]
> After serialization / deserialization:
> java.awt.Rectangle[x=0,y=0,width=334,height=148]
>
> Serialization:
>
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> GeoTiffWriter writer = new GeoTiffWriter(baos, null);
> GeoTiffWriteParams wp = new GeoTiffWriteParams();
> wp.setSourceRegion(grid.getGridGeometry().getGridRange2D().getBounds());
> final ParameterValueGroup params = new
> GeoTiffFormat().getWriteParameters();
>
> params.parameter(AbstractGridFormat.GEOTOOLS_WRITE_PARAMS.getName().toString()).setValue(wp);
> writer.write(grid, params.values().toArray(new GeneralParameterValue[1]));
> writer.dispose();
> byte[] bytes = baos.toByteArray();
>
> Deserialization:
>
> ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
> GeoTiffReader reader = null;
> Hints hints = new Hints(Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER,
> Boolean.TRUE);
> reader = new GeoTiffReader(bais, hints);
> GridCoverage2D grid = reader.read(null);
> bais.close();
> return grid;
>
> Il giorno gio 7 gen 2021 alle ore 15:06 Ian Turton
> <ijtur...@gmail.com> ha scritto:
> >
> > How different are we talking about here? You'll probably need to share
> some code and example data to allow anyone to look into this.
> >
> >
> > Ian
> >
> > On Thu, 7 Jan 2021 at 11:58, Lorenzo Di Giacomo <loridi...@gmail.com>
> wrote:
> >>
> >> Hello, i'm try to serialize a GridCoverage2D using GeoTiffWriter
> >> writing in a ByteArrayOutputStream and deserializing using
> >> GeoTiffReader from the ByteArrayInputStream... The problem is that the
> >> Bounds (Rectangle object) of the deserialized GridCoverage2D has
> >> different X,Y then the original (the width and height are the same)
> >> ... I also tried to use GeoTiffWriteParams setSourceRegion method but
> >> nothing. Do you know if that's a problem or some other params must be
> >> set in order to have the same bounds from the 2 grid? Thanks again!!
> >>
> >>
> >> _______________________________________________
> >> GeoTools-Devel mailing list
> >> GeoTools-Devel@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/geotools-devel
> >
> >
> >
> > --
> > Ian Turton
>
--
Ian Turton
_______________________________________________
GeoTools-Devel mailing list
GeoTools-Devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geotools-devel
