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Fixes #1750
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This commit is the result of the squashing of rfc4_dev branch in a single
commit. It implements mostly RFC 4 related work.
* Grid handling:
- remove obsolete and presumably unfinished implementation of grid catalog functionality
- all grid functionality is in grids.cpp/.hpp
- vertical and horizontal grid shift: rework to no longer load whole grid into memory
- remove hgrids and vgrids member from PJ structure, and store them in hgridshift/vgridshift/deformation structures
- build systems: add optional libtiff dependency. Must be explicitly disabled if not desired
- add support for horizontal and vertical grids in GeoTIFF, if libtiff is available
- add GenericShiftGridSet and GenericShiftGrid classes, relying on TIFF grids, that can be used for generic purpose grid-based adjustment
- add a +proj=xyzgridshift method to perform geocentric translation by grid. Used for French NTF to RGF93 transformation using gr3df97a.tif grid
- deformation: add support for +grids= for GeoTIFF grids
- horizontal grid shift: fix failures on points slightly outside a subgrid (fixes #209)
* File management:
- add a filemanager.cpp/.hpp to deal with file related work
- test for legacy proj_api.h fileapi
- proj.h: add proj_context_set_fileapi() and proj_context_set_sqlite3_vfs_name() (fixes #866)
- add capability to read resource files from the user writable directory
* Network access:
- build systems: add optional curl dependency
- add a curl-based default implementation for network related functionality
- proj.h: add C API to control network functionality, and optionaly provide network callbacks
- add data/proj.ini with default settings
- add a SQLite3 local cache of downloaded chunks
- add proj_is_download_needed() and proj_download_file()
* Use Win32 Unicode APIs and expect all strings to be UTF-8 (fixes #1765)
For backward compatibility, if PROJ_LIB content is found to be not UTF-8 or
pointing to a non existing directory, then an attempt at interpretating it
in the ANSI page encoding is done.
proj_context_set_search_paths() now assumes strings to be in UTF-8, and
functions returning paths will also return values in UTF-8.
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+opt represents one parameter. An ellipsis indicates additional
instances of the previous parameter may be given.
Spaces are used between parameters and before an ellipsis, not purely to
format brackets. See man(1) SYNOPSIS conventions.
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Any text written after the coordinate input will automatically be
forwarded to the output stream. Text in columns before the coordinate
input is discarded in the output. This works for any combination of -c, -t
and -z parameters:
$ echo 12 56 100 2018.0 comment comment | cct +proj=merc
1335833.8895 7522963.2411 100.0000 2018.0000 comment commen
$ echo text 12 56 100 2018.0 comment | cct -c 2,3,4,5 +proj=merc
1335833.8895 7522963.2411 100.0000 2018.0000 comment
$ echo text 12 56 comment | cct -c 2,3 -t0 -z0 +proj=merc
1335833.8895 7522963.2411 0.0000 0.0000 comment
$ echo 12 56 comment | cct -t0 -z0 +proj=merc
1335833.8895 7522963.2411 0.0000 0.0000 comment
Closes #918
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Added the version of introduction and removed comment about angular and
linear output (it's an internal implementation detail that users doesn't
need to be aware of).
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Specify number of decimals to display when transforming coordinates with either proj, cs2cs or cct.
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Minor rephrasing for better reading. Split -[w|W]<n> into two options.
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With this it is possible to skip the header when transforming
coordinates from a file.
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The 'Applications' chapter is moved to the top level of the website in
order to make it easier for users to find the pages quickly instead of
having to search through sub-sections in other chapters.
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