Alternative strings in Match Pattern function

[AndresMenacho]

I want to extract from a string the string that lays after two possible patterns. They are the string "CLOCK" and its lower case string "clock". I use the Match Pattern function enclosing the two alternatives between brackets (as shown in the Function & VI Reference Manual, chapter 6). But it doesn't work. Is that because I use the 4.0 version? Otherwise, how could I do this?

[Oleg]

You have to use the "regular expression" input string as
[Cc][Ll][Oo][Cc][Kk]
and in "after substring" you will get the result of extracting.
For example
CLOCK900 -> 900
clock900 -> 900
ClOcK900 -> 900
cLoCk900 -> 900
and so on.
I've checked it with my LV6 and it works fine.

Good luck.

Oleg Chutko.

[AndresMenacho]

Thanks,

I've used that same expression on my example. I thought it would work, but it doesn't.
I think it may be a matter of the version I use (4.0) is much old for this.

How could I do something that works like that?
Maybe using the function twice?

[CraigGraham]

"AndresMenacho" wrote in message
news:506500000005000000345A0000-1011517314000@exchange.ni.com...
> Thanks,
>
> I've used that same expression on my example. I thought it would work,
> but it doesn't.
> I think it may be a matter of the version I use (4.0) is much old for
> this.

Convert the string to lower case and then search for the pattern? Upper and
lower case conversions have been there for a long time.

--
Craig Graham
Physicist/Labview Programmer
Lancaster University, UK

[AndresMenacho]

Yes,

that is what I did instead of the first option reported.
Also I realized that I had written incorrectly the expression "[Cc][Ll][...". So that option works fine too.

Thanks to the two of you, after all.