Andrew

`+gamma` not implemented in this library. You can see this in the implementation of [omerc]( https://github.com/proj4js/proj4js/blob/master/lib/projections/omerc.js). **Oblique Mercator description** https://github.com/OSGeo/proj.4/blob/master/docs/source/operations/projections/omerc.rst **Omerc in proj4** https://github.com/OSGeo/proj.4/blob/master/src/projections/omerc.cpp Similar tickets #313 #301 #273 #308...

ping @calvinmetcalf

And related with https://github.com/mapnik/python-mapnik/issues/103#issuecomment-323389662

+1

@tomhughes you need to install latest PyPDF2. It solve this problem. `pip3 install git+https://github.com/mstamy2/PyPDF2.git`

After last update 3.0.20 i get this error. Ping @talaj @flippmoke

@talaj here archive with geotif and python script (138Mb) https://drive.google.com/open?id=1wF84PnNM8Tud6NvfCpY44eEkvU0_w_j3 **UPD:** - when change to `-1` RuntimeError not show. - the image becomes blurry after 18 zoom levels 

@talaj oh cool. I'll try to build and test.

@talaj it became better, but not completely fixed and rasters on small zoom became cloudy (before was sharp). 

@talaj yes the tiff reprojected "on the fly" from `EPSG:4326` to `EPSG:3857`. If something else is needed you for the tests - let me know.