spline - SMath

#1 Posted: 2024/9/26 13:41:44

Valery Ochkov

64 likes in 670 posts.

Group: User

See please the attach!
Wath is it with spline?
Spline-Mad.sm (999.43 KiB) downloaded 877 time(s).

#2 Posted: 2024/9/27 02:59:30

Martin Kraska

1,308 likes in 2,221 posts.

Group: Moderator

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

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

1 users liked this post

Valery Ochkov 2024/9/27 13:31:00

#3 Posted: 2024/9/27 13:35:18

Valery Ochkov

64 likes in 670 posts.

Group: User

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 (12.33 KiB) downloaded 872 time(s).

#4 Posted: 2024/9/29 22:42:01

Martin Kraska

1,308 likes in 2,221 posts.

Group: Moderator

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 (12.33 KiB) downloaded 872 time(s).

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

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