[GRASS-git] [OSGeo/grass] a239fd: raster: Restrict GDAL-linked raster reads to the n...

[Stefan Blumentrath]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: a239fd819fae51dea99064b7b7db6d9bc19b8e4a
      https://github.com/OSGeo/grass/commit/a239fd819fae51dea99064b7b7db6d9bc19b8e4a
  Author: Stefan Blumentrath <stefan.blumentrath at gmx.de>
  Date:   2026-09-12 (Sat, 12 Sep 2026)

  Changed paths:
    M lib/raster/R.h
    M lib/raster/get_row.c
    M lib/raster/open.c
    A lib/raster/tests/lib_raster_gdal_link_window_test.py
    M lib/raster/window_map.c

  Log Message:
  -----------
  raster: Restrict GDAL-linked raster reads to the needed column range (#7876)

The PR restricts reading GDAL-linked data (r.external / r.external.out) to the region's column range. The change can be a significant performance improvement in some edge cases, like reading small porions from large and complex data on a file system with high latency such as NAS with CIFS and may be noticable also with other medium sized data when linked data is used.



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