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### [Help] Create Logical Expression(Math) Band

Posted: Mon Nov 13, 2017 8:58 pm America/New_York
Hi all,
I have a problem related to Create Logical Expression(Math) Band.
I was used formulation TSS = 1.7532*E^(204.26*Rrs_660) by Create Logical Expression(Math) Band function. The result show only unique value equal 2.
The below images show my problem, and I am using GOCI data.
Thank you.  ### [Help] Create Logical Expression(Math) Band

Posted: Wed Nov 15, 2017 12:09 pm America/New_York
The bandMath expression  TSS = 1.7532*E^(204.26*Rrs_660)  is not doing what you think it is suppose to do.  You are confusing the caret operator "^", which is actually doing a bitwise exclusive-OR on two integers, with the a formatting style of writing "^" to represent the power notation.

To formulate your expression, use either:
TSS = 1.7532*exp(204.26*Rrs_660)
or
TSS = 1.7532*pow(E,(204.26*Rrs_660))

Danny

### [Help] Create Logical Expression(Math) Band

Posted: Wed Nov 15, 2017 8:38 pm America/New_York
Thank you very much for your help.