While generating contours in QGIS 3.6 Noosa on Mac I get an error saying "python matplotlib not available". I've downloaded the latest Python version but the problem persists.

  • If you downloaded and installed the latest python as a standalone, it will not be linked to QGIS in any way. How are you generating the contours. All the required libraries should be installed by default in QGIS. To install additional libraries for QGIS, you have to use OSGeo4W – MapInfoNewbie May 19 '19 at 22:43

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