ee.FeatureCollection.remap

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Examples

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)Colab (Python)

// 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);

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

# Classify features based on a string property.
# The 'nonsense' category gets dropped.
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'}),
    ])

trees = fc.remap(['NotTree', 'Tree'], [0, 1], 'isTree')
print('Remapped trees:', trees.getInfo())