Read values from table

[JanneT.]

Hi!

I'm creating an message counter for simple UDP message logging tool, but as always everything didn't come out as simple as I planned. Counter VI should compare incoming message to message list and then add 1 to correct messages field in GUI's Table. Problem in this solution is that I can't read previous value from table. Is there any property or method in table, which I could use to read number value from specific table cell? Or should I use some other solution for message counter?

Thank you for your help.

[pallen]

Hi Janne,

You can read and write to specific cells in a Table by using array tools.  (Doing lots of this in my current project)

Use one Index Array to define the column, and one more to define the row.  That will give you an element you can write to or read from.  

Good Luck

[becktho]

Hi pallen

Just for your information: you can use just one Index Array function and define both (the row and the column) at once.

Thomas

[JanneT.]

Hi!

I have used arrays with eg. listboxes, but with listbox there is property node called item names, which I can use for geting data out of listbox. In tables I can't find similar property node.

[becktho]

Hi

Using tables the property is named "Value".

[JanneT.]

That was what I was searching. Thanks 🙂

[pallen]

You can also use a local variable for the Table if the circumstances allow it.  This will be faster and less overhead.

[yoppy]

I'm yoppy, I'm newbie in Labview. I face the same problem. I need to read the table cell value. I can't find GET method. Would you please give me the example VI?

[Dennis_Knutson]

Go back and read the entire thread. Pay attention to the mention of the Index Array function.

This is pretty basic. There are some free tutorials.

[yoppy]

Okay, thank's for your immediate reply. It helps.