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george_geo561-Visitor
1-Visitor
May 28, 2019
Question

2D Interpolation question

  • May 28, 2019
  • 4 replies
  • 3328 views

Hello PTC community,

 

I searched all over the internet, but i could not find a solution for my problem, with my limited knowledge of mathcad usage (civil engineering student).

I have attached a picture of my table that i have to interpolate the values. it kills me that I can not solve it.

i have looked at all topics about 2d interpolation, but i couldn't not understand to reproduce.

 

I will be very grateful for any help!

4 replies

L
LucMeekes23-Emerald IV
23-Emerald IV
May 28, 2019

See if this helps:

LM_20190528_Bilinear.png

Success!
Luc

T
21-Topaz II
terryhendicott21-Topaz II
21-Topaz II
May 29, 2019

Hi,

Here is another method that means all you need is enter the two search values to get an answer.

I would improve this by programming the individual steps but have left it so you can see intermediate values.

Capture.PNG

 

W
Werner_E25-Diamond I
25-Diamond I
May 29, 2019

The generic 2D and 3D interpolation routines I posted here  a few times may be of help.
Here is one post for Mathcad 15 -> https://community.ptc.com/t5/PTC-Mathcad/3D-data-fit/m-p/478836/highlight/true#M172637

or here with Prime -> https://community.ptc.com/t5/PTC-Mathcad/3d-surface-plot-from-excel-data/m-p/370013/highlight/true#M144823

For further help you would have to tell which version of Mathcad or Prime you are using and provide a worksheet with the table and vectors typed in.

D
DJF16-Pearl
16-Pearl
May 29, 2019

One more way:

2019-05-29_8-02-07.png

    V
    24-Ruby IV
    ValeryOchkov24-Ruby IV
    24-Ruby IV
    May 30, 2019

    My old solution

    1-2.png

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