installation notes about pyproj - update?

$ curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | python
$ mkdir tmp_project
$ poetry init  # follow the prompts
$ poetry add pyproj
$ ls -l ~/.cache/pypoetry/virtualenvs/tmp-project-py3.6/lib/python3.6/site-packages/pyproj/.libs/
libproj-e5ef822e.so.15.1.1
libsqlite3-fdd57a2d.so.0.8.6
libz-a147dcb0.so.1.2.3

$ cat ~/.cache/pypoetry/virtualenvs/tmp-project-py3.6/lib/python3.6/site-packages/pyproj-2.3.1.dist-info/WHEEL 
Wheel-Version: 1.0
Generator: bdist_wheel (0.33.6)
Root-Is-Purelib: false
Tag: cp36-cp36m-manylinux1_x86_64

This looks like pyproj is providing wheels with the required binary libs available. Yet, the geopandas docs indicate that it does not.

• http://geopandas.org/install.html#installing-with-pip

The point may be true of rtree? e.g.

$ poetry add rtree
$ ls -1 ~/.cache/pypoetry/virtualenvs/tmp-project-py3.6/lib/python3.6/site-packages/rtree/
core.py
index.py
__init__.py
__pycache__

$ cat ~/.cache/pypoetry/virtualenvs/tmp-project-py3.6/lib/python3.6/site-packages/Rtree-0.8.3.dist-info/WHEEL 
Wheel-Version: 1.0
Generator: bdist_wheel (0.29.0)
Root-Is-Purelib: true
Tag: py3-none-any

But, rtree asserts that it is a pure-python library. So, what’s the story on that one?

[jorisvandenbossche]

FYI, checked https://pypi.org/project/spatialite/ and it does not provide wheels for the spatial extensions to sqlite3 (libspatialite).

We don’t use spatialite, you may be confusing it with libspatialindex? (what is used by rtree)

GEOS also provides spatial indexes, but currently we are using rtree for that (and both have some different trade-offs in terms of performance, so don’t want to simply switch; this is a topic that can in general use some more investigation)

I would push up a PR to update docs, but the geopandas packaging is a fairly high-level and difficult to keep track of everything (aside from the practical issue of forking, finding the docs etc etc etc and, time).

No problem, it was just a question, don’t feel obliged! 😃

[jorisvandenbossche]

This looks like pyproj is providing wheels with the required binary libs available. Yet, the geopandas docs indicate that it does not.

The information is indeed outdated. The wheels are a relatively recent addition for pyproj, and they are also only for mac and linux (like it is the case for fiona and shapely). Do you want to do a PR to correct that?

But, rtree asserts that it is a pure-python library. So, what’s the story on that one?

The story is that rtree itself is indeed a pure-python library, so technically they can provide universal wheels. But you still need libspatialindex C library installed, which is not included in the wheels.

Via pip, geopandas did not install rtree at all

rtree is not an actual hard dependency of geopandas. Partly because it is not that easy to install. But since it is very useful in practice (it’s needed for spatial join, overlay functionality), the conda packages list it as a dependency.