[GRASS-SVN] r68508 - grass-addons/grass7/raster/r.out.ntv2

svn_grass at osgeo.org svn_grass at osgeo.org
Wed May 25 02:18:46 PDT 2016


Author: msieczka
Date: 2016-05-25 02:18:46 -0700 (Wed, 25 May 2016)
New Revision: 68508

Modified:
   grass-addons/grass7/raster/r.out.ntv2/r.out.ntv2.html
Log:
r.out.ntv2 doc update

Modified: grass-addons/grass7/raster/r.out.ntv2/r.out.ntv2.html
===================================================================
--- grass-addons/grass7/raster/r.out.ntv2/r.out.ntv2.html	2016-05-24 23:54:02 UTC (rev 68507)
+++ grass-addons/grass7/raster/r.out.ntv2/r.out.ntv2.html	2016-05-25 09:18:46 UTC (rev 68508)
@@ -2,12 +2,16 @@
 
 <em>r.out.ntv2</em> converts a pair of GRASS raster maps containing longitude and lattitude coordinate offsets into an <a href="http://trac.osgeo.org/proj/wiki/GenParms#nadgrids-GridBasedDatumAdjustments">NTv2 grid datum shift</a> file (if this document dissapeared it might have been moved to the <a href="https://github.com/OSGeo/proj.4/wiki">new PROJ.4 wiki</a>.
 
+<h2>NOTES</h2>
+
 <p>NTv2 format supports only single-precission floating point data. GRASS double-precision DCELL data need to be reduced to FCELL before export, eg. using <a href="r.mapcalc.html">r.mapcalc</a> <code>float()</code> function.
 
 <p>The user should adjust the region and resolution to match the input raster maps before export, using <a href="g.region.html">g.region</a>.
 
-<p>PROJ.4 and the software the depend on it, including GDAL, GRASS, QGIS, assume any NTv2 grid's destination coordinate system is WGS84. The values in the grid's header set with <code>majort</code>, <code>minort</code>, <code>systemt</code> parameters are ignored, same as the input coordinate system parameters (<code>majorf</code>, <code>minorf</code>, <code>systemf</code>). They are for documentation purposes only.
+<p>PROJ.4 and the software the depend on it, including GDAL, GRASS, QGIS, assume any NTv2 grid's destination coordinate system is WGS84. The metadata values in the grid's header set with <code>majort</code>, <code>minort</code>, <code>systemt</code> parameters are ignored, same as the input coordinate system parameters (<code>majorf</code>, <code>minorf</code>, <code>systemf</code>). They are for documentation purposes only.
 
+<p>The <code>CREATED</code> and <code>UPDATED</code> output grid's metadata fields are set to, respectively, current date and time, in YYYYMMDD and HHMMSS format.
+
 <h2>SEE ALSO</h2>
 <a href="https://github.com/Esri/ntv2-file-routines">NTv2 format description by ESRI</a>
 



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