Expand description
Low-level bindings for PROJ v9.0.x
This is a
*-sys
crate; you shouldn’t use its API directly. See the
proj crate for general use.
A guide to the functions can be found here: https://proj.org/development/reference/functions.html.
By default, the crate will search for an acceptable existing libproj
installation on your system using
pkg-config.
If an acceptable installation is not found, proj-sys will attempt to build libproj from source bundled in the crate.
Features
bundled_proj - forces building libproj from source even if an acceptable
version could be found on your system. Note that SQLite3 and libtiff must be
present on your system if you wish to use this feature, and that it builds
libproj without its native network functionality; you will have to
implement your own set of callbacks if you wish to make use of them (see the
proj crate for an example).
Structs
\brief Structure given description of a celestial body.
\brief Structure given overall description of a CRS.
\brief Structure describing optional parameters for proj_get_crs_list();
File API callbacks
\brief Structure given description of a unit.
Constants
The objects are equivalent for the purpose of coordinate operations. They can differ by the name of their objects, identifiers, other metadata. Parameters may be expressed in different units, provided that the value is (with some tolerance) the same once expressed in a common unit.
Same as EQUIVALENT, relaxed with an exception that the axis order of the base CRS of a DerivedCRS/ProjectedCRS or the axis order of a GeographicCRS is ignored. Only to be used with DerivedCRS/ProjectedCRS/GeographicCRS
All properties are identical.
Not WKT / unrecognized
ESRI variant of WKT1
\ref WKT2_2015
Deprecated alias for PJ_GUESSED_WKT2_2019
\ref WKT2_2019
cf osgeo::proj::io::PROJStringFormatter::Convention::PROJ_4
cf osgeo::proj::io::PROJStringFormatter::Convention::PROJ_5
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
Abstract type, not returned by proj_get_type()
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
Abstract type, not returned by proj_get_type()
Abstract type, not returned by proj_get_type()
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
proj_get_type() will never return that type, but PJ_TYPE_GEOGRAPHIC_2D_CRS or PJ_TYPE_GEOGRAPHIC_3D_CRS.
cf osgeo::proj::io::WKTFormatter::Convention::WKT1_ESRI
cf osgeo::proj::io::WKTFormatter::Convention::WKT1_GDAL
cf osgeo::proj::io::WKTFormatter::Convention::WKT2
cf osgeo::proj::io::WKTFormatter::Convention::WKT2_SIMPLIFIED
Deprecated alias for PJ_WKT2_2019
Deprecated alias for PJ_WKT2_2019
cf osgeo::proj::io::WKTFormatter::Convention::WKT2_2019
cf osgeo::proj::io::WKTFormatter::Convention::WKT2_2019_SIMPLIFIED
Test coordinate operation extent against both CRS extent.
Test coordinate operation extent against the intersection of both CRS extent.
Ignore CRS extent
Test coordinate operation against the smallest of both CRS extent.
Completely discard an operation if a required grid is missing.
Ignore grid availability at all. Results will be presented as if all grids were available.
Results will be presented as if grids known to PROJ (that is registered in the grid_alternatives table of its database) were available. Used typically when networking is enabled.
Grid availability is only used for sorting results. Operations where some grids are missing will be sorted last.
Always search for intermediate CRS.
Only attempt looking for intermediate CRS if there is no direct transformation available.
Only attempt looking for intermediate CRS if there is no direct transformation available.
Create access. File should be truncated to 0-byte if already existing. Equivalent to “w+b”
Read-only access. Equivalent to “rb”
Read-update access. File should be created if not existing. Equivalent to “r+b”
The area of validity of transforms should at least intersect the area of interest.
The area of validity of transforms should strictly contain the are of interest.
Statics
Functions
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Type Definitions
\brief Object category.
Comparison criterion.
Type of coordinate system.
\brief Guessed WKT “dialect”.
\brief PROJ string version.
\brief Object type.
\brief WKT version.
Specify how source and target CRS extent should be used to restrict candidate operations (only taken into account if no explicit area of interest is specified.
Describe how grid availability is used.
Describe if and how intermediate CRS should be used
Open access / mode
Spatial criterion to restrict candidate operations.
\brief Type representing a NULL terminated list of NULL-terminate strings.
Callback to resolve a filename to a full path
Network access: close callback
Network access: get HTTP headers
Network access: open callback
Network access: read range