[mapserver-dev] Scale computations for non-square pixels...

[Basques, Bob (CI-StPaul)]

All,

I think I would lean towards the larger cellsize.  The diagonal approach seems like it might introduce some rounding problems too easily.

Now, one thing to think about here, are those odd-duck users (like myself) who actually do request tall/skinny and low/wide images on purpose for custom map assembly purposes.  I’ve done so for building custom map collars and non-square gridding (profiles with different scales) for example.  There may also be a need to override (if not already an option) such a setting so as to still get the zoomed-in features to be drawn in these stretched images.

bobb





On Jul 24, 2018, at 10:22 AM, Lime, Steve D (MNIT) <steve.lime at state.mn.us<mailto:steve.lime at state.mn.us>> wrote:

Hi all: We have a ticket out there regarding scale computation with non-square pixels (seehttps://github.com/mapserver/mapserver/issues/5625). It should be easy to implement a fix, to the extent it’s possible to come up with a single scale value when that’s
really not the case. Any opinions on what a “best” approach would be? --Steve
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