Table Multiplication

Forum|Forum|5 years ago
February 24, 2021
2 replies
2463 views

Hi all I have a problem whereby I need to multiply one table by the other, I want to be able to show this so the excel function isn’t what I am after.

I keep getting the error as highlighted below in the fourth column

Mast load is defined as - 1.538x10^4 N

Boom Load is defined as - 5.713x10^3 N

EW weight as - 227 N

Cantilever 1 as - 1.4x10^3N

many thanks for the possible solutions

Civil_Engineering

Best answer by Werner_E

Always try to attach your worksheet.

From the pic its not clear if you changed the default value of ORIGIN (I supposed you changed it to be 1) and whyt kind of data structure "cantilever" really is.

I guess that cantilever is a nested matrix, a matrix containing another matrix, and that cantilever[1 therefore is not a single scalar but a 1x1 matrix containing the value 1.4x10^3N.

We don't see how cantilever is defined. If its manually defined or the result of another calculation.
It may be that you once unintentionally type square brackets in your sheet. Doing so creates a matrix!

L

LucMeekes

23-Emerald IV

That's not an error. It is an indication that the result of multiplication of those two table elements (Vector elements) is an array of one row and one column.

I should guess it is due to the fact that you have an index to the array 'Cantilever'.

If you attach the Prime worksheet (which you should ALWAYS do when asking a question on this forum), we can pinpoint exactly what the cause is.

Success!
Luc

Incidentally: To show the contents of that 1x1 matrix, you should uncheck 'collapse nested matrices' on the Matrices/Tables tab.

W

Werner_E

Answer

25-Diamond I

Always try to attach your worksheet.

From the pic its not clear if you changed the default value of ORIGIN (I supposed you changed it to be 1) and whyt kind of data structure "cantilever" really is.

I guess that cantilever is a nested matrix, a matrix containing another matrix, and that cantilever[1 therefore is not a single scalar but a 1x1 matrix containing the value 1.4x10^3N.

We don't see how cantilever is defined. If its manually defined or the result of another calculation.
It may be that you once unintentionally type square brackets in your sheet. Doing so creates a matrix!