How to distinguish numerics and characters in a string

[mugger]

I'm looking for a simple way to do it or any built-in subVIs that can do this.

I have 3 strings "1234c", "ab3dc". "xya", I want to identify the ones that have numbers and retrieve all numbers. So one important step is to distinguish the numeric characters and non-numeric characters. How can I do it in Labview with built-in subVIs?

Thanks

[Gak]

Hi mugger,

Use match Pattern from function palette>>String functions.

Read help file you will come to know about its function.

You can find A sequence of one or more digits and characters using this function.

Best Of Luck

[jcarmody · Accepted solution]

[0-9] looks for a number, "+" makes the search look for 1 or more of them (it's "greedy", so it'll get as many as there are.)  I added one more string to your list to show that Match Pattern will match only the first instance of a number.  If there's a chance that you'll have data like the last element you'll need to run it in a loop.  Decimal String to Number can also work if a digit is the first character it finds.

[scottcolston]

How are the strings created? do you have the control to structure these?

[mugger]

Thanks buddy, that really helpes alot!

Another question is I have a XY graph with multiple cursor on it. I'd like to drag cursors, one at a time. So my question is how can I let labview know which one I drag? any idea?

[jcarmody]

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@mugger wrote:

Another question is I have a XY graph with multiple cursor on it. I'd like to drag cursors, one at a time. So my question is how can I let labview know which one I drag? any idea?

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You should start another thread for this question.

[Matt_W1]

For single characters there is the "lexical class" node under comparison. I'm just mentioning it since it's not a very well known node.