Decreasing value in lookup table

Question

Ole Møller Christensen 2014-10-17

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编辑： Ole Møller Christensen 2014-10-17

I have an Excel sheet from where I import values to be used in a 1D lookup table. The input is a temperature which is 0-95 in steps of 5. The output is kinematic viscosity going from 1.751 to 0.306. When running my simulation I get the error that my values "must be monotonically increasing".

How do I use the lookup table when my values are decreasing?

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Answer 1

Michael Haderlein 2014-10-17

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You can flip your data, just use the flipud for column arrays and fliplr for line arrays.

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Answer 2

Ole Møller Christensen 2014-10-17

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编辑：Ole Møller Christensen 2014-10-17

The problem was just a bad input into the lookup table. Switched the temperature and kinematic viscosity (had temperature as table data and not breakpoints). This solved the problem.