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28 lines
661 B
Python
28 lines
661 B
Python
"""Reverse mask a region.
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Create an image that masks everything except for the specified polygon.
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"""
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import ee
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import ee.mapclient
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ee.Initialize()
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ee.mapclient.centerMap(-115, 39, 5)
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fc = (ee.FeatureCollection('RESOLVE/ECOREGIONS/2017')
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.filter(ee.Filter().eq('ECO_NAME', 'Great Basin shrub steppe')))
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# Start with a black image.
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empty = ee.Image(0).toByte()
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# Fill and outline the polygons in two colors
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filled = empty.paint(fc, 2)
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both = filled.paint(fc, 1, 5)
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# Mask off everything that matches the fill color.
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result = both.mask(filled.neq(2))
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ee.mapclient.addToMap(result, {
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'palette': '000000,FF0000',
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'max': 1,
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'opacity': 0.5
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})
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