Interesting and alarming observation. And how do those results compare with output from the $length variable?
Cheers . . . . . Springfield Samsung Tab 4 On May 17, 2018 5:26 AM, "Michel Stuyts" <michel.stu...@edegem.be> wrote: > In the length() function QGIS uses the CRS unit of the layer to calculate > the result. When I use for example a layer in a local CRS like EPSG:31370 > or EPSG:5439 and a layer in EPSG:3857 (that all use meters as unit) the > results are very different (+40% difference). Changing the project CRS > makes no difference. When I check the length using the Measure Tool the > results are very similar to the local CRS. > > > > How can I measure the length of a line and use it as a label independent > from the layer CRS and get results similar to the results of the Measure > Tool? > > > > Michel > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >
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