Hi all Someone reported to me an issue with $length distance calculation and the "Distance" map tool. It seems to him QGIS was not precise enough compared to field data collection (about 10% or worst discrepency)
I remember reading some discussions here about wrong distance calculations in some contexts. Has anyone a "cookbook" or good practices about distance calculations in QGIS, regarding different data sources, contexts, SCR, etc. ( on the fly reprojection or not, data provider, etc.) Thanks in advance Michaël
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