WI2015

The WI2015 operator algorithm computes the Water Index 2015 from a given product.

The WI2015 results from the following equation:

WI2015 = 1.7204 + 171 * G + 3 * R - 70 * N - 45 * S1 - 71 * S2

, where:

The bands are:

- G is the Green band
- R is the Red band
- N is the NIR band
- S1 is the SWIR 1 band
- S2 is the SWIR 2 band

WI2015-Flags

Also the processor computes an additional flags band called 'wi2015_flags' with the following bit coding:

Bit Position	Description
Bit 0	The computed value for WI2015 is NAN or is Infinite
Bit 1	The computed value for WI2015 is less than -1 (minus one)
Bit 2	The computed value for WI2015 is greater than 1 (one)