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raster band stats from a loaded layer Allows raster band stats (eg min, max, avg) to be used in expressions
15 lines
935 B
Plaintext
15 lines
935 B
Plaintext
{
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"name": "raster_statistic",
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"type": "function",
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"description": "Returns statistics from a raster layer.",
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"arguments": [
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{"arg":"layer", "description":"a string, representing either a raster layer name or layer ID"},
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{"arg":"band", "description":"integer representing the band number from the raster layer, starting at 1"},
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{"arg":"property", "description":"a string corresponding to the property to return. Valid options are:<br /><ul><li>min: minimum value</li><li>max: maximum value</li><li>avg: average (mean) value</li><li>stdev: standard deviation of values</li><li>range: range of values (max - min)</li><li>sum: sum of all values from raster</li></ul>"}
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],
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"examples": [
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{ "expression":"raster_statistic('lc',1,'avg')", "returns":"Average value from band 1 from 'lc' raster layer"},
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{ "expression":"raster_statistic('ac2010',3,'min')", "returns":"Minimum value from band 3 from 'ac2010' raster layer"}
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]
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}
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