[gdal-dev] gdal_merge vs gdalbuildvrt

[Jorge Arévalo]

Hello,

What's the difference between gdal_merge and gdalbuildvrt? If I'm not 
wrong, gdal_merge actually creates a new dataset, merging the input 
ones. And gdalbuildvrt just creates a VRT file, which works as 
descriptor for a mosaic.

At the end, in both cases we have a mosaic from several input files 
(real mosaic vs virtual mosaic). So, why would I use gdal_merge instead 
of gdalbuildvrt? With gdal_merge, I'd need more space in disk, in order 
to generate a merged file.

Many thanks in advance.

Best regards,

-- 
Jorge Arévalo

CartoDB
http://cartodb.com/
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