Revisions to How to calculate raster statistics for polygons?

deleted 2 characters in body

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edited Feb 1, 2016 at 13:08

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean())
zonalstats.calculateStatistics(None)

see API for all options.

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean())
zonalstats.calculateStatistics(None)

see API for all options.

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean)
zonalstats.calculateStatistics(None)

see API for all options.

added 2 characters in body

Source Link

edited Jan 25, 2016 at 10:00

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean())
zonalstats.calculateStatistics(None)

see API for all options.

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean)
zonalstats.calculateStatistics(None)

see API for all options.

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean())
zonalstats.calculateStatistics(None)

see API for all options.

Source Link

created Jan 25, 2016 at 9:52

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer,rasterfile)
zonalstats.calculateStatistics(None)

calculates by default just Count, Sum and Mean (as you can tell from Raster -> Zonal Statistics in QGIS Desktop, it can do a lot more).

If you, for instance, want to compute just the Mean you have to use:

zonalstats = qgis.analysis.QgsZonalStatistics(vectorlayer, rasterfile, QgsZonalStatistics.Mean)
zonalstats.calculateStatistics(None)

see API for all options.

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