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authorEven Rouault <even.rouault@spatialys.com>2022-02-07 15:13:28 +0100
committerEven Rouault <even.rouault@spatialys.com>2022-02-07 15:13:28 +0100
commit5aa5f4625dcd02a419b2f5443a793a8cb9d718af (patch)
tree25369603f7c218ae1e66427fd886d607ef6be990 /docs
parentbcc0013d3c8456a667c25c713f6a494c43ca0eac (diff)
downloadPROJ-5aa5f4625dcd02a419b2f5443a793a8cb9d718af.tar.gz
PROJ-5aa5f4625dcd02a419b2f5443a793a8cb9d718af.zip
Doc: fix example whith used the +t_obs parameter of Helmert removed per #1264
Diffstat (limited to 'docs')
-rw-r--r--docs/source/resource_files.rst12
1 files changed, 5 insertions, 7 deletions
diff --git a/docs/source/resource_files.rst b/docs/source/resource_files.rst
index cd2d7d3f..54c812f2 100644
--- a/docs/source/resource_files.rst
+++ b/docs/source/resource_files.rst
@@ -459,22 +459,20 @@ the ellipsoid as in the following example
+init=epsg:25832 +ellps=intl
where the Hayford ellipsoid is used instead of the predefined GRS80 ellipsoid.
+
It is also possible to add additional parameters not specified in the init file,
-for instance by adding an observation epoch when transforming from ITRF2000 to
-ITRF2005:
+for instance by adding a central epoch when applying the ITRF2014:NOAM plate
+motion model:
::
- +init=ITRF2000:ITRF2005 +t_obs=2010.5
+ +init=ITRF2014:NOAM +t_epoch=2010.0
which then expands to
::
- +proj=helmert +x=-0.0001 +y=0.0008 +z=0.0058 +s=-0.0004
- +dx=0.0002 +dy=-0.0001 +dz=0.0018 +ds=-0.000008
- +t_epoch=2000.0 +convention=position_vector
- +t_obs=2010.5
+ +proj=helmert +drx=0.000024 +dry=-0.000694 +drz=-0.000063 +convention=position_vector +t_epoch=2010.0
Below is a list of the init files that are packaged with PROJ.