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authorEven Rouault <even.rouault@spatialys.com>2019-02-17 19:40:38 +0100
committerEven Rouault <even.rouault@spatialys.com>2019-02-17 19:42:35 +0100
commite8b2e2a36324006146406fb1fc89ce6ed863807f (patch)
tree5c2c0c9229958d63e77171f64f909864855afb5d /docs/source
parenta8cbe0c66974871f5a7bd7ef94001ebf461ac7ea (diff)
downloadPROJ-e8b2e2a36324006146406fb1fc89ce6ed863807f.tar.gz
PROJ-e8b2e2a36324006146406fb1fc89ce6ed863807f.zip
Modify the default strategy of researching intermediate CRS to do it only if there is no direct transformation
Diffstat (limited to 'docs/source')
-rw-r--r--docs/source/apps/projinfo.rst11
1 files changed, 7 insertions, 4 deletions
diff --git a/docs/source/apps/projinfo.rst b/docs/source/apps/projinfo.rst
index cbfd44d4..af9ed171 100644
--- a/docs/source/apps/projinfo.rst
+++ b/docs/source/apps/projinfo.rst
@@ -21,7 +21,7 @@ Synopsis
| [--spatial-test contains|intersects]
| [--crs-extent-use none|both|intersection|smallest]
| [--grid-check none|discard_missing|sort] [--show-superseded]
- | [--pivot-crs none|{auth:code[,auth:code]*}]
+ | [--pivot-crs always|if_no_direct_transformation|never|{auth:code[,auth:code]*}]
| [--boundcrs-to-wgs84]
| [--main-db-path path] [--aux-db-path path]*
| [--identify]
@@ -157,13 +157,16 @@ The following control parameters can appear in any order:
.. note:: only used for coordinate operation computation
-.. option:: --pivot-crs none|{auth:code[,auth:code]*}
+.. option:: --pivot-crs always|if_no_direct_transformation|never|{auth:code[,auth:code]*}
Determine if intermediate (pivot) CRS can be used when researching coordinate
operation between 2 CRS. A typical example is the WGS84 pivot. By default,
- projinfo will consider any potential pivot. If using the ``none`` strategy,
+ projinfo will consider any potential pivot if there is no direct transformation
+ ( ``if_no_direct_transformation``). If using the ``never`` strategy,
only direct transformations between the source and target CRS will be
- used. It is also possible to restrict the pivot CRS to consider by specifying
+ used. If using the ``always`` strategy, intermediate CRS will be considered
+ even if there are direct transformations.
+ It is also possible to restrict the pivot CRS to consider by specifying
one or several CRS by their AUTHORITY:CODE.
.. note:: only used for coordinate operation computation