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Subtract two spectral bands in a Geotiff image(band2 - band1)

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Signatures

RS_Subtract (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 subtractDF = spark.sql("select RS_Subtract(band1, band2) as differenceOfOfBands from dataframe")