[gdal-dev] copy raster data in between file formats - Java

[Imran Rajjad]

Hi Even,

I have 1.8, and I was getting a grey image earlier but I guess by
adding the Integer.SIZE in the byte array size made it work, but
honestly I am not sure how its working now, further I was wondering if
GDAL can leverage from JAI`s DiskMemImage class, because if I have to
write a bigtiff as big as 12GB, Its impossible to work with Memory
Raster.

regards,
Imran

On Tue, Jun 12, 2012 at 11:14 PM, Even Rouault
<even.rouault at mines-paris.org> wrote:
> Le mardi 12 juin 2012 13:31:44, Imran Rajjad a écrit :
>> Dear List,
>>
>> Have been trying to write raster from one file format e.g. BMP into a
>> tiff file which will eventually become a BIGTiff. The current output
>> is a grey image whereas the output should be RGB. The GeoTiFF is not
>> accepting bands for some reasons, To write a multiband geoTiff do we
>> require to add each band separately or is there something missing in
>> the below code snippet?
>>
>>                 gdal.AllRegister();
>>               Driver driver = gdal.GetDriverByName("GTiff");
>>               Dataset dst = driver.Create("d:\\test.tif", 256,
>> 256,3,gdalconst.GDT_Byte); Dataset src = gdal.Open("d:\\test.bmp");
>>
>>
>>               byte[] outputPixels = new byte[src.GetRasterXSize() *
>> src.GetRasterYSize() * src.getRasterCount()*Integer.SIZE];
>>               src.ReadRaster(0, 0, src.getRasterXSize(), src.getRasterYSize(),
>> src.getRasterXSize(), src.getRasterYSize(), gdalconst.GDT_Byte,
>> outputPixels, null, 0);
>>               dst.WriteRaster(0, 0, src.getRasterXSize(), src.getRasterYSize(),
>> src.getRasterXSize(), src.getRasterYSize(), gdalconst.GDT_Byte,
>> outputPixels, null, 0);
>>               dst.FlushCache();
>>               dst.delete();
>>               src.delete();
>>
>
> I've just tested the above snippet with a 256x256 image and it works as
> expected. Not sure why you have a problem. Do you use a recent GDAL version,
> let's say 1.9 ?



-- 
I.R