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Returns Normalized Difference between two bands(band2 and band1) in a Geotiff image(example: NDVI, NDBI)

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Signatures

RS_NormalizedDifference (Band1: ARRAY[Double], Band2: ARRAY[Double])

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Parameters

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Band1
ARRAY[Double]
required
The first spectral band.
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Band2
ARRAY[Double]
required
The second spectral band.

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Return type

An array of double values.

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Example

val normalizedDF = spark.sql("select RS_NormalizedDifference(band1, band2) as normdifference from dataframe")