Hello. I am looking for some assistance with for loops and matrices within Mathcad. I have a relatively basic knowledge of mathcad so this may be a straightforward solution.
I am trying to return a value for m11 for each of the sigma(11) values. However, the way i have it set up, it only returns the m11 value when i = 2.
I know i could list the equation out 3 times, changing the "i" with 0, 1, and 2 each time; however i had thought i may be able to do the same thing using the for loop function.
Thank you.
ACCEPTED SOLUTION
Accepted Solutions
A Mathcad program returns ONLY the value of the last statement executed. That's why you see a single element instead of an array.
Here's what you could do (simplified):
(I could have typed just R, instead of return R, but it makes clear what result the program should return. Note that a return statement put anywhere in the program makes the program stop there and return the argument of the return. So you can put it in a IF statement if you need to stop the program in the middle of a loop.)
But in general I prefer to define a function (prevents strange things happening when the FOR loop gets out of sync with the length of the array):
A word of advice: refrain from evaluating a definition (that is, do NOT put an = immediately following a definition, like you did with m.11). First define m.11 := ....
Then, on a separate spot, evaluate it with m.11 =
Yes, it works (most of the time), but occasionally it creates problems.
Success!
Luc
A Mathcad program returns ONLY the value of the last statement executed. That's why you see a single element instead of an array.
Here's what you could do (simplified):
(I could have typed just R, instead of return R, but it makes clear what result the program should return. Note that a return statement put anywhere in the program makes the program stop there and return the argument of the return. So you can put it in a IF statement if you need to stop the program in the middle of a loop.)
But in general I prefer to define a function (prevents strange things happening when the FOR loop gets out of sync with the length of the array):
A word of advice: refrain from evaluating a definition (that is, do NOT put an = immediately following a definition, like you did with m.11). First define m.11 := ....
Then, on a separate spot, evaluate it with m.11 =
Yes, it works (most of the time), but occasionally it creates problems.
Success!
Luc
For those who have similar problems but only have Mathcad Prime Express, here are a few other ways around using programmed for loops. They work in Mathcad Prime Express 7 and should work in earlier versions.
Stuart
