Maxima plot - SMath

#1 Posted: 1/22/2026 10:52:55 AM

0 likes and 1 dislikes in 8 posts.

Group: User

Hi, i would like to add some points to 3D plot. How can I do that?
And can i somehow make the plot smooth without using smaller steps in vectors?

Kompresibilita_3D.sm (56.04 KiB) downloaded 119 time(s).

Thanks for answers,
Tomas

Edited 1/22/2026 10:54:05 AM

#2 Posted: 1/22/2026 2:08:14 PM

Martin Kraska

1,312 likes in 2,228 posts.

Group: Moderator

You could try to create a mesh of triangles or quadrilateral objects. Then you are free to use a problem-adjusted surface parametrization.

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

#3 Posted: 1/27/2026 9:55:32 PM

Tomas Novotny

0 likes and 1 dislikes in 8 posts.

Group: User

Hi,
thanks for your answer. I have another question. I´m trying to make graph of water density, but the axes are not right, what is wrong?

hustota vody.sm (69 KiB) downloaded 43 time(s).

Thanks,
Tomáš

#4 Posted: 1/28/2026 12:09:04 AM

Martin Kraska

1,312 likes in 2,228 posts.

Group: Moderator

This is probably due to the "visual" indexing in the matrix.

Rows in a matrix are increasing top-down, whereas values in y are increasing bottom-up.

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

#5 Posted: 1/28/2026 8:23:58 AM

Tomas Novotny

0 likes and 1 dislikes in 8 posts.

Group: User

Thanks you very much! That helped.
But if i want to make axes right i have to switch x and y axes in elevation grid command. I don’t know why.

hustota vody.sm (135.01 KiB) downloaded 35 time(s).

Is there any sheet of something like that, where I can fing all comands for plots? And how can I write them, because commands that I used, I copied from some file I found.

Thanks for answers,
Tomáš

#6 Posted: 1/28/2026 5:30:00 PM

Martin Kraska

1,312 likes in 2,228 posts.

Group: Moderator

See topic starter https://smath.com/en-US/forum/topic/cnc5Xp/Maxima-Plugin. I added some references there.

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

#7 Posted: 1/28/2026 7:33:40 PM

Tomas Novotny

0 likes and 1 dislikes in 8 posts.

Group: User

That is awesome!

Thanks,
Tomáš

SMath Forum

Maxima plot - How to add point in maxima plot - Messages