ee.ImageCollection.randomColumn

Adds a column of deterministic pseudorandom numbers to a collection. The outputs are double-precision floating point numbers. When using the 'uniform' distribution (default), outputs are in the range of [0, 1). Using the 'normal' distribution, outputs have μ=0, 𝛔=1, but have no explicit limits.
UsageReturns
ImageCollection.randomColumn(columnName, seed, distribution)FeatureCollection
ArgumentTypeDetails
this: collectionFeatureCollectionThe input collection to which to add a random column.
columnNameString, default: "random"The name of the column to add.
seedLong, default: 0A seed used when generating the random numbers.
distributionString, default: "uniform"The distribution type of random numbers to produce; one of 'uniform' or 'normal'.