Re: [gdal-dev] gdalbuildvrt changes data when building VRT

2012-01-30 Thread Frank Warmerdam
On Mon, Jan 30, 2012 at 1:17 PM, John Twilley wrote: > I'm using gdalbuildvrt as a simple way to merge adjoining data files. > Unfortunately, I'm noticing that some values change.  I've created a > simple test case where I make a VRT from a single GeoTIFF and compare > histograms before and after,

[gdal-dev] gdalbuildvrt changes data when building VRT

2012-01-30 Thread John Twilley
I'm using gdalbuildvrt as a simple way to merge adjoining data files. Unfortunately, I'm noticing that some values change. I've created a simple test case where I make a VRT from a single GeoTIFF and compare histograms before and after, and I've attached it to this message. Can someone tell me why