[gdal-dev] Is there a gdalwarp command to turn 'internal nodata values' into nodata (and read as transparent by arcmap)?

[Ruth Simm]

Using this:
>> dtm>gdalwarp -s_srs EPSG:4326 -t_srs EPSG:3857 -r bilinear -te -2
0037508.34 -20037508.34 20037508.34 20037508.34 -of GTiff globe.vrt globe_3857_gdal.tif
Returned this message

>>Creating output file that is 194835P x 194835L.
>>Processing input file globe.vrt.
>>Using internal nodata values (eg. 0) for image merged.vrt.
All my 'NoData' values are now '0' and I was wondering if there was a way to just keep them as 'NoData' (and still transparent when read by ArcMap - as the globe.vrt is now).

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