Matrix

[BaJa_2020]

Hello, 

If I have a matrix like the attached file (1.csv),

I want to divide each element by a certain number for example 4 and generate a new matrix to be like the attached file (2.csv).

I make code like the attached. But I see it not practical if I  want to change the element (Numeric) and with the large matrixes. 

Do you have any ideas! 

[altenbach · Accepted solution]

Try this:

[altenbach · Accepted solution]

Some comments about your code:

• You have a 2D array, not a matrix. (In LabVIEW, a matrix is a special datatype designed for linear algebra).
• If your inputs are integers and divisible by the numeric, there should NOT be any orange. It should be all blue! Try it!
• "Index array" is resizeable. You don't need 13 instances!
• There is no reason for your local variable!
• If you can describe the problem in one paragraph, something is wrong if it takes a screenful of code. Look at my solution above.
• Not sure why you have a selectable path, but a hardwired file name. Seems too rigid.
• Code needs to be scalable. My example works for any size inputs and values. Your code would be impossible to scale to an input with much larger arrays.
• I recommend you look at some basic tutorial about array operations.
• Good luck!

[BaJa_2020]

Thank you, I will follow your advice. 

another inquiry: 

I I am going to make some calculation for the output array. Then I would like to back it to the original dimensions.

I should collect every 4 (element) together. 

in another way.. dose it possible to reverse this code?

[altenbach]

That depends on the calculations. Are all sets of four rows still identical after the calculation?

[altenbach · Accepted solution]

Here's one possibility: