Error on gdal raster info in VRT - PROJ: No GeoPixelScale tag in overviews

Michael Smith via gdal-dev <[email protected]>
Newsgroups gmane.comp.gis.gdal.devel
Message-ID <[email protected]>
GDAL 3.12.2 "Chicoutimi", released 2026/02/03 - from Conda-forge (both Linux and OSX)

I have a base file (COG with overviews) that when I wrap in a VRT to reproject, I get an odd error but only on Linux, not on OSX (haven’t tested on windows):

Specifically, I see:

Center      (  42.4860100,  15.2722355) ( 42d29' 9.64"E, 15d16'20.05"N)
Band 1 Block=512x128 Type=Float32, ColorInterp=Gray
  NoData Value=-32767
GDAL: GDALOverviewDataset(raster21058922_EPSG:32638+3855.vrt, this=0x56307ab73b40) creation.
ERROR 1: PROJ: No GeoPixelScale tag
GDAL: GDALOverviewDataset(raster21058922_EPSG:32638+3855.vrt, this=0x56307ac1acc0) creation.
ERROR 1: PROJ: No GeoPixelScale tag
GDAL: GDALOverviewDataset(raster21058922_EPSG:32638+3855.vrt, this=0x56307aeaf410) creation.
ERROR 1: PROJ: No GeoPixelScale tag
GDAL: GDALOverviewDataset(raster21058922_EPSG:32638+3855.vrt, this=0x56307af40750) creation.
ERROR 1: PROJ: No GeoPixelScale tag
GDAL: GDALOverviewDataset(raster21058922_EPSG:32638+3855.vrt, this=0x56307afc7300) creation.
ERROR 1: PROJ: No GeoPixelScale tag
  Overviews: 5130x4980, 2565x2490, 1283x1245, 641x623, 320x311
GDAL: GDALClose(raster21058922_EPSG:32638+3855.vrt, this=0x56307a786b70)
GDAL: GDALClose(raster26-21058922_EPSG:32638+3855.vrt, this=0x56307a740e50)


The vrt that doesn't have reprojection doesn't get this. The base projection here is UTM+EGM2008. 

I have not seen this error before.

-- 

Michael Smith 
RSGIS Center – ERDC CRREL NH 
US Army Corps


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