diff options
Diffstat (limited to 'docs/source/apps')
| -rw-r--r-- | docs/source/apps/cct.rst | 11 | ||||
| -rw-r--r-- | docs/source/apps/cs2cs.rst | 10 | ||||
| -rw-r--r-- | docs/source/apps/projinfo.rst | 10 |
3 files changed, 28 insertions, 3 deletions
diff --git a/docs/source/apps/cct.rst b/docs/source/apps/cct.rst index a4cc690c..96b5f13b 100644 --- a/docs/source/apps/cct.rst +++ b/docs/source/apps/cct.rst @@ -91,6 +91,17 @@ cartesian coordinates) and *Coordinate Transformations*, which are coordinate operations where input and output datums differ (e.g. change of reference frame). +Use of remote grids +******************* + +.. versionadded:: 7.0.0 + +If the :envvar:`PROJ_NETWORK` environment variable is set to ``ON``, +:program:`cct` will attempt to use remote grids stored on CDN (Content +Delivery Network) storage, when they are not available locally. + +More details are available in the :ref:`network` section. + Examples ******** diff --git a/docs/source/apps/cs2cs.rst b/docs/source/apps/cs2cs.rst index 12f91e64..c95bbaed 100644 --- a/docs/source/apps/cs2cs.rst +++ b/docs/source/apps/cs2cs.rst @@ -171,6 +171,16 @@ normally be in DMS format (use ``-f %.12f`` for decimal degrees with 12 decimal places), while projected (cartesian) coordinates will be in linear (meter, feet) units. +Use of remote grids +------------------- + +.. versionadded:: 7.0.0 + +If the :envvar:`PROJ_NETWORK` environment variable is set to ``ON``, +:program:`cs2cs` will attempt to use remote grids stored on CDN (Content +Delivery Network) storage, when they are not available locally. + +More details are available in the :ref:`network` section. Examples ******** diff --git a/docs/source/apps/projinfo.rst b/docs/source/apps/projinfo.rst index d1889844..47deaaeb 100644 --- a/docs/source/apps/projinfo.rst +++ b/docs/source/apps/projinfo.rst @@ -20,7 +20,7 @@ Synopsis | [[--area name_or_code] | [--bbox west_long,south_lat,east_long,north_lat]] | [--spatial-test contains|intersects] | [--crs-extent-use none|both|intersection|smallest] - | [--grid-check none|discard_missing|sort] [--show-superseded] + | [--grid-check none|discard_missing|sort|known_available] [--show-superseded] | [--pivot-crs always|if_no_direct_transformation|never|{auth:code[,auth:code]*}] | [--boundcrs-to-wgs84] | [--main-db-path path] [--aux-db-path path]* @@ -151,12 +151,13 @@ The following control parameters can appear in any order: .. note:: only used for coordinate operation computation -.. option:: --grid-check none|discard_missing|sort +.. option:: --grid-check none|discard_missing|sort|known_available Specify how the presence or absence of a horizontal or vertical shift grid required for a coordinate operation affects the results returned when researching coordinate operations between 2 CRS. - The default strategy is ``sort``: in that case, all candidate + The default strategy is ``sort`` (if :envvar:`PROJ_NETWORK` is not defined). + In that case, all candidate operations are returned, but the actual availability of the grids is used to determine the sorting order. That is, if a coordinate operation involves using a grid that is not available in the PROJ resource directories @@ -166,6 +167,9 @@ The following control parameters can appear in any order: this returns the results as if all the grids where available. The ``discard_missing`` strategy discards results that involve grids not present in the PROJ resource directories. + The ``known_available`` strategy discards results that involve grids not + present in the PROJ resource directories and that are not known of the CDN. + This is the default strategy is :envvar:`PROJ_NETWORK` is set to ``ON``. .. note:: only used for coordinate operation computation |