LabVIEW
Actively changing number of elements in an array
Solved!
I suspect this is a GUI issue, and you're not actually talking about adding / subtracting array elements . (??)
To change the number of visible elements on an array control: Create > Property Node > Number of Rows. Write a number to that node.
If it's arranged horizontal, use Number of Columns.
Chris B. wrote:Is it possible to have this happen without the program to be running? Thanks for any help.
So you want this to work at edit time? Are you talking about the number of visible elements or are you talking about the actual size of the array (these numbers are unrelated!).
In order for something to happen, "something" needs to be running. You could run another VI and use scripting to make changes to the array structure.
You could also make an Xcontrol containing an array and a numeric. Xcontrols are fully operational even if the VI itself is in edit mode.
If this is a program to run standalone, simply make sure the program is always running, but is in an idle state if nothing needs to be done at the moment. Now you can handle resize events if needed.
@Chris B. wrote:
I would like the user to first type in the number of coordinates they want to input. Then the array where the user types in the coordinates is resized and only shows the number of rows they specified.
As mentioned, this is most easily done when the program is running.
Why do you have a requirements that this needs to work in edit mode? That simply makes no sense.
Assuming it is sufficient if it works when the VI is running, you already have the answer with the property nodes. Have you tried? Where did you get stuck?
(Of course you also need some input checking in order not to accidentally show a million rows. ;))
