On 11-06-21 01:46 AM, Nuo Tang wrote:
Hi All,I am new here. Recently I was trying to compress all the tif (some of them have been georeferenced in Arcgis) to jp2. This is the first time that I touch the jp2- amazing! It has the similar quality but smaller size ( 1G tiff= 45M jp2). However, there are some tif images which i have georeferenced before (but not rectified). I used the gdalinfo command but- it seems that gdalinfo (see below) cannot retrieve the external georeferencing information (.aux.xml files). So, when I gdal_translate these images to jp2- they do not have any valid georeferecing information either. Any help will be appreciated. /C:\bin\release-1600-gdal-1-8-0-mapserver-5-6-6>gdalinfo w:\3512\3512_2a_181.tif Driver: GTiff/GeoTIFF Files: w:\3512\3512_2a_181.tif w:\3512\3512_2a_181.aux w:\3512\3512_2A_181.rrd w:\3512\3512_2a_181.tif.aux.xml Size is 18808, 18808 Coordinate System is `'
Nuo, It is not at all clear to me why gdalinfo would not be using the georeferencing from the .aux.xml file - it does seem to be scanning it. Perhaps you could provide the .aux.xml file? There are some drivers for which built-in georeferencing will mask the .aux.xml contents and this might be or have been one. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
