How to write a condition ?

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afef 2017-5-23

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编辑： dpb 2017-5-24

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Hi, i have to write this condition in my code but i don't know how

moyenne <= '(-inf-6.95]'

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Jan 2017-5-23

Are you aware that the notation, you have invented, is not clear or unique? What exactly does the smaller than operator do with a string? What exactly is (-inf-6.95] ?

Do you mean: Moyenne is > -Inf and small or equal -6.95?

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dpb 2017-5-23

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编辑：dpb 2017-5-24

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Can't. Comparison operations always return logical 0 (false) where A or B have NaN elements.

Best you can do is test if result isfinite or not. See

doc isfinite % and friends for more information

ADDENDUM

OK, w/ the additional background try

Ayup...

moyenne<=-6.95

would give everything <= the breakpoint into that region, up to as large a negative value as can be represented. If the model can/does generate -Inf, that will have to be special-cased.

Jan's guess wasn't too far off, looks like

if sign(moyenne)*isinf(moyenne)==-1 | moyenne<=-6.95 % handle -Inf, too...

should do it. The first tests for -Inf and the other takes the case is finite but < than the breakpoint.

Do the similar thing on an unbounded upper bin as well.