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DM_1012731612-Amethyst
12-Amethyst
November 26, 2021
Solved

Default vertical concatenation. Difference between Prime and Mathcad 15

  • November 26, 2021
  • 2 replies
  • 1723 views

Hi,

 

I converted a Mathcad 15 file to Prime and most of the results are different. These differences are due to the way in which Mathcad 15 and Prime append vectors vertically (see image).

 

The solution I found was to transpose the matrix in Prime (see AzD_(j,jw) in image). Unfortunately for this particular Mathcad 15 file, there are several matrices that have the same issue and I would have to transpose each one of them individually.

 

I wonder if there is a way to automatically change all the matrices in Prime that have this issue. I tried changing the range of (j,jw) without success.

 

P.S. I attached a Prime and Mathcad file exemplifying the issue.

 

Thank you!

Best answer by Werner_E

What you get with

Werner_E_0-1637929186297.png

is NOT a vector, Its nothing you can assign to a variable

Werner_E_1-1637929269223.png

and so you cannot use it for any further calculations - its useful(?) for display purposes only.

A range is kind of an implicit loop, and, yes, Prime loops in a different way compared to real Mathcad. This should be no problem, though, if you use ranges just for the situations they are made for (index a matrix when defining it, define a plot range, for-loop in a program).

 

So I can only support Lucs suggestion to create the desired vector in a different way.

 

Here is yet another function which does the job (in MC15 as well as in Prime)

Werner_E_2-1637930434672.png

Of course this small function will deal with matrices of any dimension:

Werner_E_3-1637930895298.png

Prime 6 file attached

2 replies

L
LucMeekes23-Emerald IV
23-Emerald IV
November 26, 2021

What is wrong with

LucMeekes_0-1637926106403.png

That should work in Prime the same as in (real) Mathcad.

 

And if you have more columns:

LucMeekes_1-1637926371777.png

 

Success!
Luc

    W
    Werner_E25-Diamond IAnswer
    25-Diamond I
    November 26, 2021

    What you get with

    Werner_E_0-1637929186297.png

    is NOT a vector, Its nothing you can assign to a variable

    Werner_E_1-1637929269223.png

    and so you cannot use it for any further calculations - its useful(?) for display purposes only.

    A range is kind of an implicit loop, and, yes, Prime loops in a different way compared to real Mathcad. This should be no problem, though, if you use ranges just for the situations they are made for (index a matrix when defining it, define a plot range, for-loop in a program).

     

    So I can only support Lucs suggestion to create the desired vector in a different way.

     

    Here is yet another function which does the job (in MC15 as well as in Prime)

    Werner_E_2-1637930434672.png

    Of course this small function will deal with matrices of any dimension:

    Werner_E_3-1637930895298.png

    Prime 6 file attached

      S
      StuartBruff23-Emerald V
      23-Emerald V
      November 26, 2021
      @Werner_E wrote:

      What you get with

      Werner_E_0-1637929186297.png

      is NOT a vector, Its nothing you can assign to a variable

      Werner_E_1-1637929269223.png

      and so you cannot use it for any further calculations - its useful(?) for display purposes only.

      A range is kind of an implicit loop, and, yes, Prime loops in a different way compared to real Mathcad. This should be no problem, though, if you use ranges just for the situations they are made for (index a matrix when defining it, define a plot range, for-loop in a program).

       

      So I can only support Lucs suggestion to create the desired vector in a different way.

       

      Here is yet another function which does the job (in MC15 as well as in Prime)

      Werner_E_2-1637930434672.png

      Of course this small function will deal with matrices of any dimension:

      Werner_E_3-1637930895298.png

      Prime 6 file attached

      And if you want to handle nested arrays, here's another way using the vec function:

       

      93384_pastedImage_4

       

      https://community.ptc.com/t5/PTC-Mathcad/The-vec-function/m-p/170273

       

      Stuart

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