mapnik python demo ol15

[darkblueb]

a mapnik python demo included in the dot-deb packaging fails [0]

earlier #osgeolive versions ref: ​https://trac.osgeo.org/osgeolive/ticket/2255

mapnik will render to a Jupyter Notebook:

​https://git.osgeo.org/gitea/darkblueb/ol14_ipynb_misc/src/branch/master/mapnik-py

TODO demo for ol15

==

mapnik

user@ol15nightly:~$ cp -R /usr/share/doc/python3-mapnik/examples/* mapnik_test/


user@ol15nightly:~/mapnik_test/demo/python$ python3 rundemo.py 
Traceback (most recent call last):
  File "/home/user/mapnik_test/demo/python/rundemo.py", line 322, in <module>
    mapnik.render(m, im)
RuntimeError: Cannot initialize proj_transform for given projections without proj4 support (-DMAPNIK_USE_PROJ4): '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'->'+proj=lcc +ellps=GRS80 +lat_0=49 +lon_0=-95 +lat+1=49 +lat_2=77 +datum=NAD83 +units=m +no_defs'