Index of a value in an array

[shmmeee]

Hi,

I'm very new to Mathcad (12), I'm trying to find the index that a particular value appears at in an array. Even better I need to know what index of the element with the highest value is.

I hope that makes sense, a quick example just in case:

say the array = (0,3,9,5,2)

I want a function to return 2 (the index of 9).

Thanks in advance,

Iain

 

[chichuck]

shmmeee,


as long as you have an array, (a matrix with 1 row & 5 cols) as you describe in your post, cols(array) should return 5. The function match(array) should return 2.

If you start with a vector (with 5 rows & 1 col) then use rows(vector) to get 5. match(vector) will return 2.



regards,


chichuck

 

[pstuckey]

Match is the correct function, however the correct format is:

match(max(array),array)

This will return a vector containing the index of the maximum value in array.

Peter

 

[cuky2000]

You may find in your manual or in the software, sample problems that may help you with this task. For example, go to:
- Resource Center
- Quicksheet References
- Vector and Matrices
- Locating All Elements in an Array That Match a Condition.

Unfortunately, this particular example may not be for beginners. However, this may give you an idea what is require to solve this type of problem.

Good luck.