topic Extract segment lengths"L" of last iteration MC-P11 in Mathcad

Extract segment lengths"L" of last iteration MC-P11

SFares — Fri, 21 Nov 2025 20:28:31 GMT

Hello All,
I have attached MC-P11 sheets. How can I extract the segment lengths values "L" out of last iterations of this following function. There are two conditions as you can see in subsequent calculations: 1. For Element B in Compression, comp="B"
2. For element C in compression, comp="C"
"L" values can be different or same depending on above conditions and segment lengths.

Regards,
Sam

Re: Extract segment lengths"L" of last iteration MC-P11

Werner_E — Sat, 22 Nov 2025 02:11:52 GMT

Its not clear to me what you are trying to achieve.

If your function should return "L" (which is a 11x1 vector) the you simply replace the return value "Eff_Properties" by "L".

In case you want return both you may return a 1x2 matrix consisting of "L" and "Eff_Properties".

You may assign the function output a 1x2 vector of variables as well if needed:

Re: Extract segment lengths"L" of last iteration MC-P11

SFares — Mon, 24 Nov 2025 13:20:36 GMT

Hello Werner,

Thank you for your response.
What I am trying to accomplish is to have the effective area which is the sum of L*t included in my effective properties or have it report the vector L of the last iteration then i will compute the effective area. When i did what you suggested [ L Effect_Properties] i was not getting an answer, as you're showing. I was getting the size of two matrices. What Ii did is the following, as shown below, and on page 4 of the sheet, is adding the term highlighted in yellow

On page 5, Draft view, is iterating in a manual way. As i mentioned before, i can have the variable "comp" equal to B or C. Is my approach correct? Also it will be good to report the last L vector too. I have attached my latest sheet.

Regards,
Sam

Re: Extract segment lengths"L" of last iteration MC-P11

Werner_E — Mon, 24 Nov 2025 14:13:57 GMT

You saw just the size of the two matrices because Prime per default does so in case of nested matrices.

You have to change that behaviour, either for the whole sheet or just for one region by unchecking the option "Collapse Nested Matrices":

As t seems to be a constant (0.1) which does not change you may return t*sum of L as the second return value.

When you later call this function, you can assign it a 1x2 matrix so there is no need to display the nested matrix:

Re: Extract segment lengths"L" of last iteration MC-P11

SFares — Mon, 24 Nov 2025 19:15:41 GMT

Thank you so much, Werner!

Sam

Re: Extract segment lengths"L" of last iteration MC-P11

SFares — Mon, 24 Nov 2025 20:12:02 GMT

Hello Werner,

When iI made the change I am getting the results displayed differently. Also errors in summary on page 8 and 9

Regards,

Sam

Re: Extract segment lengths"L" of last iteration MC-P11

SFares — Mon, 24 Nov 2025 21:29:24 GMT

Sorry Werner! i realized my mistake!

Thanks,

Sam