Is there a way to change a layers symbol size from paper units(mm) to map units(m) once you hit a certain scale without adding duplicates of each layer? QGIS 12.2

2 Answers 2


Rule-based labelling can do it. Define two rules with disjoined scale intervals and set the other parameters for each rule.

  • Thanks! This works great, I tried a whole bunch of different google searches and found nothing helpful. As soon as I put in rule based symbology QGIS I got a myraid of tutorials and help pages. Thanks again. Dec 6, 2015 at 14:00

You could also set the symbol size in map units, then press the "spanner" icon which appears next to the size. This allows you to set either a minimum and maximum size in mm for the symbol, or a scale range to limit the symbol scaling to.

  • This works well too... Dec 8, 2015 at 16:14

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