PythonSTB
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pypi312

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-================================================================================
-  PYPROJ - USER GUIDE (Android Python STB) - Generated by RIMI
-================================================================================
-WHAT THIS IS
-------------
-pyproj 3.8.0 - Python interface to PROJ (cartographic projections and
-coordinate transformations library). This package ships the pyproj Python
-code, ten compiled Cython extension modules, the PROJ 9.8.1 shared library
-(libproj.so, built from source for Android) and the PROJ datum database
-(proj.db, 10 MB) plus support files, all inside ONE wheel per architecture:
-  pyproj-3.8.0-cp312-cp312-android_24_arm64_v8a.whl   (real ARM64 phones)
-  pyproj-3.8.0-cp312-cp312-android_24_x86_64.whl      (x86_64 emulators)
-INSTALL
--------
-1. Install the wheel matching your device architecture via PipManager.
-2. Install `certifi` (pyproj's only runtime dependency) from its own
-   package - it is NOT bundled in this wheel (house rule: pure-Python
-   deps live in their own packages).
-3. No PROJ_DATA / PROJ_LIB setup needed: the wheel carries
-   pyproj/proj_dir/share/proj/proj.db and pyproj finds it automatically
-   (internal proj directory is preferred over env vars).
-QUICK START
------------
-  from pyproj import CRS, Transformer, Geod
-  # CRS objects (needs proj.db - vendored, works offline)
-  wgs84 = CRS.from_epsg(4326)
-  # coordinate transform: lon/lat -> Web-Mercator
-  t = Transformer.from_crs("EPSG:4326", "EPSG:3857", always_xy=True)
-  x, y = t.transform(12.0, 55.0)   # -> (1335833.89, 7361866.11)
-  # geodesic on WGS84 ellipsoid (no DB needed, pure math in PROJ)
-  g = Geod(ellps="WGS84")
-  az12, az21, dist = g.inv(0.0, 0.0, 1.0, 0.0)  # 1 deg on equator
-  print(dist)   # 111319.49079327357 metres
-  # where the datum files live
-  from pyproj import datadir
-  print(datadir.get_data_dir())   # .../pyproj/proj_dir/share/proj
-ANDROID NOTES / GOTCHAS
------------------------
-- The bundled libproj.so is preloaded automatically at
-  `import pyproj` (ctypes.CDLL of the wheel sibling). Never move or
-  rename pyproj/libproj.so inside site-packages.
-- Network features (TransformerGroup downloads, projsync, grid CDN) need
-  internet AND are built WITHOUT curl support in this wheel: remote grid
-  download is unavailable. Everything that works from the vendored
-  proj.db + embedded math works fully offline.
-- GeoTIFF grid support is disabled (TIFF off): transformations listed in
-  proj.db that require an external .tif grid raise a ProjError naming the
-  missing grid instead of silently mis-transforming. Standard
-  CRS-to-CRS work (incl. Copenhagen 4326->3857 above) needs no grids.
-- Full 700 MB+ proj-data grid packs are NOT shipped (same as upstream
-  wheels). If you need a specific grid, push the .tif/.gsb next to
-  proj.db and call pyproj.datadir.append_data_dir(), or set PROJ_DATA.
-- SQLite is statically linked INSIDE libproj.so: no extra .so to install.
-- Tested API surface (see Test_Pyproj.py, 10 checks): import, version
-  strings, certifi presence, PROJ 9.8.1 linkage, proj.db vendoring, CRS
-  lookup, 4326->3857 known answer + roundtrip, geodesic inv/fwd known
-  answers, ellipsoid map listing.
-VERSIONS INSIDE
----------------
-  pyproj 3.8.0 (latest stable, 2026) | PROJ 9.8.1 (exact version upstream
-  3.8.0 wheels bundle) | SQLite 3.53.4 (static) | Python 3.12 | API 24+.
-================================================================================
-  Generated by RIMI
-================================================================================