ee.FeatureCollection.remap

Remaps the value of a specific property in a collection. Takes two parallel lists and maps values found in one to values in the other. Any element with a value that is not specified in the first list is dropped from the output collection.

Usage	Returns
FeatureCollection.remap(lookupIn, lookupOut, columnName)	FeatureCollection

Argument	Type	Details
this: collection	FeatureCollection	The collection to be modified.
lookupIn	List	The input mapping values. Restricted to strings and integers.
lookupOut	List	The output mapping values. Must be the same size as lookupIn.
columnName	String	The name of the property to remap.

Examples

Code Editor (JavaScript)

// Classify features based on a string property.
// The 'nonsense' category gets dropped.
var fc = ee.FeatureCollection([
  ee.Feature(ee.Geometry.Point([1, 2]), {isTree: 'Tree'}),
  ee.Feature(ee.Geometry.Point([3, 4]), {isTree: 'NotTree'}),
  ee.Feature(ee.Geometry.Point([5, 6]), {isTree: 'nonsense'}),
]);

var trees = fc.remap(['NotTree', 'Tree'], [0, 1], 'isTree');
print('remapped trees', trees);