Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.
NTv2 format supports only single-precission floating point data. GRASS GIS
double-precision DCELL data need to be reduced to FCELL before export, eg.
using r.mapcalc float()
function.
The user should adjust the region and resolution to match the input raster maps before export, using g.region.
PROJ.4 and the software that depend on it, including GDAL, GRASS, QGIS, assume
the NTv2 grid's destination coordinate system to be WGS84. The metadata values in
the grid's header set with majort
, minort
,
systemt
parameters are ignored, same as the input coordinate system
parameters (majorf
, minorf
, systemf
).
They are for documentation purposes only.
The CREATED
and UPDATED
output grid's metadata
fields are set to, respectively, current date and time, in YYYYMMDD and HHMMSS format.
Available at: r.out.ntv2 source code (history)
Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55
Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.
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© 2003-2023 GRASS Development Team, GRASS GIS 7.8.8dev Reference Manual