[Gdal-dev] Creating GIFs, JPEGS, etc

[Gerald Brandt]

Hi,

I'm succesfully loading DTED, USGS DEM and GTOPO30 DEM files.  I use
these data files to get elevation information for specific latitudes and
logitudes.

What I would like to do is display an image (BMP, GIF, JPEG) of the
elevation data in different colours.  I'm not quite sure on how to do
this properly.  Is there an 'easy' way to do this with GDAL?

Thanks,

Gerald

Ps: I have tried using CreateCopy, but I always get a full black or
white image.



    GDALDriver *tdriver = (GDALDriver *)GDALGetDriverByName("GIF") ;
    GDALDataset *tset ;

    tset = tdriver->CreateCopy("c:\\copy.gif", mDataInfo[2].dataset,
FALSE, NULL, NULL, NULL) ;
    GDALClose(tset) ;