and now without a zip file! Ian
On Thu, 7 Jan 2021 at 17:05, Ian Turton <ijtur...@gmail.com> wrote:
> and here are my input png files (you'll need to add gt-image to read them)
>
> Ian
>
> On Thu, 7 Jan 2021 at 17:02, Ian Turton <ijtur...@gmail.com> wrote:
>
>> 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
>>
>
>
> --
> Ian Turton
>
--
Ian Turton
test.prj
Description: application/esri-crs
test.pgw
Description: Binary data
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