[gdal-dev] Complex Data in Terrasar images

[el_inca]

Hi,
When reading *.cos file with gdal i get negative data. Is it normal ? How to
explain it, is it a feature of gdal or of a terrasar image or another
reason?

Here is a code:

Struct Complex {
           Int16 real;
           Int16 imaginary;
           }
...
Complex * scanline=new Complex[XSize];
poRasterBand->RasterIO(Gf_Read,nXOff,nYOff,XSize,1,scanline,XSize,1,CInt16,0,0);


if i read *.cos file into UInt16 type all negative data will be translated
to zero:

UInt16 * scanline=new UInt16[XSize];
poRasterBand->RasterIO(Gf_Read,nXOff,nYOff,XSize,1,scanline,XSize,1,UInt16,0,0);

Gdal version: 1.8.0
Language: Visual C++

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