[QGIS-Developer] Convert from mapunits to pixels
Tom Chadwin
tom.chadwin at nnpa.org.uk
Fri Nov 10 16:43:09 PST 2017
Because this conversion will not take place in QGIS but elsewhere, I need the
underlying maths for the conversion, not the API method. I've now found the
formula for EPSG:3857, and a method for all projections which works in
Leaflet, here:
https://stackoverflow.com/questions/27545098/leaflet-calculating-meters-per-pixel-at-zoom-level
Thanks
Tom
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