Changes between Version 72 and Version 73 of Grass7/RasterLib

Timestamp:

Oct 13, 2022, 6:43:01 AM (19 months ago)

Author:

neteler

Comment:

G3d tile layout: fix URL to ​http://trac.osgeo.org/grass/browser/grass/trunk/raster3d/r3.in.ascii/g3d_volume_layout.png

Grass7/RasterLib

@@ -39 +39 @@
  * Storage in '''tiles''' instead of by row
   * Reasoning: Glynn said on the mailing list: "In most cases, single-level tiled storage will give you close to the same performance with a lot less complexity."
-    * The G3d library already implements a tile based approach with tile caching and tile file buffer for arbitrary read and write access, have a look at [http://trac.osgeo.org/grass/browser/grass/trunk/raster3d/r3.in.ascii/g3d_volume_layout.png G3d tile layout]
+    * The G3d library already implements a tile based approach with tile caching and tile file buffer for arbitrary read and write access, have a look at [https://grass.osgeo.org/grass-stable/manuals/raster3d_layout.png G3d tile layout]
   * Function needed to check whether tiles are all null, or all the same value.
   * What tile size should be used? Could be user/program specified, or standard value of something like 64x64. If there isn't a fixed value then there should be utility program that can convert tiled rasters to different tile sizes.
@@ -49 +49 @@
 
 Notes about NULL file format
- * Current cell_misc/null file size in GRASS GIS 7: The size of the cell_misc/<mapname>/null file depends only upon the number of rows and columns, not the data. It's one bit (null/non-null) for each cell, rounded to an integral number of bytes per row (i.e. the number of columns is rounded up to the nearest multiple of 8).
- * Compression idea: see #2349
+ * Current cell_misc/null file size in GRASS GIS 7: The size of the cell_misc/
 === Directory structure ===