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Kinematic deformation models are used in some geodetic transformations.
This commit introduces the ability to do transformations involving a
gridded deformation/velocity model. For practical reasons a gridded deformation
model needs to be split into two seperate files, one for the horizontal
components and one for the vertical component. For this we use formats
already known to PROJ.4, namely the CTable/CTable2 and the GTX formats.
Grids are specified in the proj-string with +xy_grids and +z_grids.
Grid values are expected to be in m/year. The kinematic part of the
operation is controlled by the +t_epoch parameter, which is the central
epoch of the transformation. An observation epoch is also needed. It can
be specified either in the PJ_OBS input as the fourth element in the
coordinate, or in the proj-string with +t_obs. If +t_obs is present in
the proj-string it takes presedence over the value in the PJ_OBS
coordinate.
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* Repair gie and cct after breakage due to proj_strtod update
* Remove unused variables
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* Prevent crashes and leaks on allocation failure
Memory allocation can fail. We need to gracefully handle this case and
prevent dereferencing null pointers.
* Make NULL checks consistent within a file
* Properly report allocation errors
* Improve cleanup in pj_gc_reader.c
* Implement pj_strdup and use instead of strdup
The function strdup is not part of ANSI C 89, but a POSIX extension.
Therefore we can not rely on it being available on all platforms.
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improved docs, improved strtod - avoid precision loss for very long fractions
Switch gie.c to use same framework as cct.c
numerous improvements in proj_strtod.c and gie.c
Add gie to the build system
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* pj_transform() crashes on a catalog that has no matching grid
* pj_free() and pj_gc_unloadall() badly interact. No longer try to free the
catalog object in pj_free(). That is the job of pj_gc_unloadall()
* Fix memory leaks in pj_gc_readcatalog() and pj_gc_unloadall()
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1923
Credit to OSS Fuzz.
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some error E501 - 'line too long errors', lines with >79 characters.
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Python 3.x, the zip function is iterable, which caused Python 3.x to miss some coordinate tests. Add cli argument '--test' to test_json.py to only specify one test type (conversion/roundtrip) to be ran. Change Travis testing to only perform conversion test on some JSON test files.
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