lspline and linterp - where is an error?

#1 Posted: 4/20/2023 2:27:00 AM

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See please the attach
Propane-Butane-Tab-Func.sm (642 KiB) downloaded 57 time(s).

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#2 Posted: 4/20/2023 7:25:04 AM

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There may be a bug in the lspline() function. It takes time to find it. I will compare this behavior with an analog from Mathcad.

Russia ☭ forever, Viacheslav N. Mezentsev

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Valery Ochkov 4/21/2023 1:49:00 AM

#3 Posted: 4/20/2023 10:26:11 AM

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Wrote
See please the attach

Interpolate within the matrix.

Propane-Butane SplineMatrix.sm (10 KiB) downloaded 44 time(s).

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Valery Ochkov 4/21/2023 1:49:00 AM

#4 Posted: 4/20/2023 3:32:46 PM

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Hi. You can use InterpBilinear instead linterp twice.

Propane-Butane-Tab-Func InterpBilinear.sm (624 KiB) downloaded 59 time(s).

Best regards.
Alvaro.

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#5 Posted: 4/21/2023 8:54:41 AM

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Wrote
Interpolate within the matrix.

Interpolate % row inspector added.
Cheers ... Jean.

Propane-Butane SplineMatrix Inspector.sm (19 KiB) downloaded 52 time(s).

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Valery Ochkov 4/21/2023 9:04:00 AM

SMath