spline - SMath

#1 Опубликовано: 26.09.2024 13:41:44

Valery Ochkov

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See please the attach!
Wath is it with spline?
Spline-Mad.sm (999 КиБ) скачан 31 раз(а).

#2 Опубликовано: 27.09.2024 02:59:30

Martin Kraska

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I think this is because lspline() requires equidistant x values and your's aren't.

Martin Kraska Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx

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Valery Ochkov 27.09.2024 13:31:00

#3 Опубликовано: 27.09.2024 13:35:18

Valery Ochkov

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Wrote
I think this is because lspline() requires equidistant x values and your's aren't.

Thank you!
Yes, that's true. But I think it's a bug.
The values should only be sorted in ascending order X!
There is no such bug in Mathcad.
Spline-bug.sm (12 КиБ) скачан 26 раз(а).

#4 Опубликовано: 29.09.2024 22:42:01

Martin Kraska

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Wrote

Wrote
I think this is because lspline() requires equidistant x values and your's aren't.

Thank you!
Yes, that's true. But I think it's a bug.
The values should only be sorted in ascending order X!
There is no such bug in Mathcad.
Spline-bug.sm (12 КиБ) скачан 26 раз(а).

I'd not call it a bug. It is just a helper function of the Mathcad Toolbox Toolbox plugin, not meant being a full-featured multipurpose function. Yet, this restriction would be worth mentioning in the help text.

Martin Kraska Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx

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spline - Сообщения