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ESAB10-Marble
10-Marble
January 28, 2026
Solved

3D curve from one matrice or table and vector the Z

  • January 28, 2026
  • 1 reply
  • 414 views

Hello,

 

I'm trying to generate a 3D curve from a table or matrix of (X, Y) values along with a vector Z, which contains one value for each (X, Y) pair with Mathcad 11.0.

I tried using createmesh, but without success.

 

Do you have any suggestions on how to achieve this?

 

Mathcad 3D plot.png

Thank you for your help.

 

Update : Added Excel file to import the matrix.

Update : Link to the mathcad file

 

Emilien

Best answer by Werner_E

Prime's 3D plot only allows units for the z-axis, x- and y-axis values must be dimensionless.

 

Here are two attempts to plot your function CE. Both use log scale for the x- and y-axis. As Luc already wrote Prime does not support log scales in 3D plots, so the functions have to take care of this. The right plot also uses log scale for the z-axis as well.

In both cases current i is running from 1 A to 100 A (i = 0..2) and time from 10 µs to 10 000 µs (t=-5..-2)

Werner_E_0-1769597905571.png

 

I don't think that Prime can plot reliably and meaningful a single 2D matrix (its also missing the corresponding x- and y-values).

Here is what I get when I plot the matrix M at the end of your sheet. Values at x- and y-axis are simply the index numbers.

Werner_E_1-1769598050255.png

 

 

1 reply

L
LucMeekes23-Emerald IV
23-Emerald IV
January 28, 2026

Bonjour Emilien,

 

It's always wise to state what version of Prime you are using: in your case it's 11.

 

The Matrix is NOT available at the end of the worksheet, because you did not supply the Excel sheet with the component data.

 

To use CreateMesh, you need a function describing the surface. You don't have a function.

 

But you do have a matrix from the table data, it's called IM. And you should be able to plot that in a 3D plot.

I don't think that the 3D plots in Prime can have logarithimc axes, you should take the log of those axis data.

 

Success!
Luc

E
ESAB10-MarbleAuthor
10-Marble
January 28, 2026

Hi Luc,

 

Thank you for your answer!

I’ve updated both files.

I also have a function CE(IM, T), but I’m not able to plot this graph in 3D, maybe due to units ?

 

Thank you, Emilien

 

 

W
Werner_E25-Diamond IAnswer
25-Diamond I
January 28, 2026

Prime's 3D plot only allows units for the z-axis, x- and y-axis values must be dimensionless.

 

Here are two attempts to plot your function CE. Both use log scale for the x- and y-axis. As Luc already wrote Prime does not support log scales in 3D plots, so the functions have to take care of this. The right plot also uses log scale for the z-axis as well.

In both cases current i is running from 1 A to 100 A (i = 0..2) and time from 10 µs to 10 000 µs (t=-5..-2)

Werner_E_0-1769597905571.png

 

I don't think that Prime can plot reliably and meaningful a single 2D matrix (its also missing the corresponding x- and y-values).

Here is what I get when I plot the matrix M at the end of your sheet. Values at x- and y-axis are simply the index numbers.

Werner_E_1-1769598050255.png

 

 

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