The DSWI3 operator algorithm computes the Disease-Water Stress Index 3 from a given product.

The DSWI3 results from the following equation:

DSWI3 = S1 / R

, where:

The bands are:

- R is the Red band
- S1 is the SWIR 1 band

Also the processor computes an additional flags band called 'dswi3_flags' with the following bit coding:

Bit Position	Description
Bit 0	The computed value for DSWI3 is NAN or is Infinite
Bit 1	The computed value for DSWI3 is less than -1 (minus one)
Bit 2	The computed value for DSWI3 is greater than 1 (one)