added example
added example

thareUSGS/GDAL_scripts,USGS-Astrogeology/GDAL_scripts,thareUSGS/GDAL_scripts,USGS-Astrogeology/GDAL_scripts,thareUSGS/GDAL_scripts,thareUSGS/GDAL_scripts,USGS-Astrogeology/GDAL_scripts,USGS-Astrogeology/GDAL_scripts