srygonic wrote > I have a lot of geotiffs which are quite large at times (meaning they have > quite a bit of unnecessary white space between) and I would like to run a > batch script to just do a simple compression on them as I believe that > they > are not compressed because the files that just contain a lot of white > space > are still unnecessarily huge.
Hi, If you run gdalinfo about your image you will notice that it is already compressed: Metadata: TIFFTAG_SOFTWARE=OrbitGIS 17.0.0 Image Structure Metadata: COMPRESSION=YCbCr JPEG INTERLEAVE=PIXEL SOURCE_COLOR_SPACE=YCbCr However, one of your commands which is using actually the same parameters does shrink the image from 465 MB into 170 MB. gdal_translate GTIFF_RAW:GAPS_2017-02-23.tif test2.tif -co PHOTOMETRIC=YCBCR -co TFW=YES -co TILED=YES -co BIGTIFF=IF_SAFER -co COMPRESS=JPEG -a_srs EPSG:3414 For saving disk space I would consider cutting those areas which do have real data into individual files and then combine them into a virtual mosaic with gdalbuildvrt. Empty space does compress rather well but not having any pixels from areas with no data is most savvy option of all. -Jukka Rahkonen- -- Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
