[GRASS-SVN] r71551 - grass/trunk/raster/r.out.gdal

[svn_grass at osgeo.org]

Author: mmetz
Date: 2017-10-12 11:47:34 -0700 (Thu, 12 Oct 2017)
New Revision: 71551

Modified:
   grass/trunk/raster/r.out.gdal/r.out.gdal.html
Log:
r.out.gdal: +how to create Cloud Optimzed GeoTIFFs

Modified: grass/trunk/raster/r.out.gdal/r.out.gdal.html
===================================================================
--- grass/trunk/raster/r.out.gdal/r.out.gdal.html	2017-10-11 08:27:36 UTC (rev 71550)
+++ grass/trunk/raster/r.out.gdal/r.out.gdal.html	2017-10-12 18:47:34 UTC (rev 71551)
@@ -26,9 +26,10 @@
 
 <h2>SUPPORTED RASTER FORMATS</h2>
 
-The set of <a href="http://www.gdal.org/formats_list.html">supported
-raster formats</a> written by <em>r.out.gdal</em> depends on the
-local GDAL installation. Available may be (incomplete list):<p>
+The set of <a href="http://www.gdal.org/formats_list.html">supported 
+raster formats</a> written by <em>r.out.gdal</em> depends on the local 
+GDAL installation, printed with the <em>-l</em> flag. Available may be 
+(incomplete list):<p>
 <div class="code"><pre>
   AAIGrid: Arc/Info ASCII Grid
   BMP: MS Windows Device Independent Bitmap
@@ -117,7 +118,7 @@
 one or three bands. All other data types and numbers of bands can be
 properly read with GIS software only. Although GeoTIFF files usually
 have a .tif extension, these files are not necessarily images but
-first of all spatial raster datasets, e.g. SRTM DEM version 4.
+first of all spatial raster datasets, e.g. land cover or elevation.
 <p>When writing out multi-band GeoTIFF images for users of ESRI software or
 ImageMagick, the interleaving mode should be set to "pixel" using
 <em>createopt="INTERLEAVE=PIXEL"</em>. BAND interleaving is slightly more
@@ -133,8 +134,10 @@
 software is compatible with, as this varies widely between vendors and
 versions. Long term, the less metadata you have to remove the more
 self-documenting (and useful) the dataset will be.
-<p>Here are some things to try:
 
+<p>
+Here are some things to try:
+
 <ul>
 <li>Create a World file with <tt>createopt="TFW=YES"</tt>.
 
@@ -159,6 +162,10 @@
 overviews.
 </ul>
 
+<p>
+Cloud Optimized GeoTIFFs (COG) can be created with the creation options 
+<em>createopt=TILED=YES,COMPRESS=DEFLATE</em>, followed by 
+<em>gdaladdo</em> to build overviews.
 
 <h2>EXAMPLES</h2>