Using Planet in Google Earth Engine¶
Setting Band Combinations¶
Set band combinations to visualize the Planet map layer. True color settings produce a natural visualization. False color visualizations reveal and enhance spectral data otherwise invisible to the human eye.
For example, re-ordering the near-infrared, green and red bands from 8-band imagery emphasizes the near-infrared features that can highlight vegetation health.
For more information on Planet spectral bands, see the Band order and sensor frequency table at Understanding PlanetScope Instruments.
Visualizing 8-band Imagery¶
True Color¶
The following example displays the natural red, green, and blue bands from the imagery:
Map.addLayer(imageCollection, {"opacity":1,"bands":["B6","B4","B2"],"min":405.79,"max":4499.71,"gamma":2.331})
False Color Infrared¶
In the following example, by ordering near infrared, green, and red bands you can create a false color infrared display that highlights the near-infrared data in the imagery. False color infrared is useful for seeing differences in vegetation.
Map.addLayer(imageCollection, {"opacity":1,"bands":["B8","B4","B6"],"min":405.79,"max":4499.71,"gamma":2.331})
Band Math¶
NDVI on 8-band Imagery¶
Map.addLayer(image.normalizedDifference(['B8', 'B6']).rename('NDVI'), {min: -1, max: 1, palette: ['blue', 'white', 'green']});
Working with Cloud Masks: UDM2¶
Visualizing Usable Pixels¶
Ordering a Planet analytic_sr_udm2 appends the Usable Data Mask 2.0 (UDM2 bands to PlanetScope images, resulting in a twelve band image in Earth Engine.
Map.addLayer(image.select('Q8'), {min: 0, max: 1, palette: ['black', 'white']});
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