How can I extract data from array of strings?

[peter.a.azucena@intel.com]

I tried to look for a solution to this but I haven't got any yet, I just started labview and I am trying to do a simple data extraction ui.

Basically if i have an array of strings, i'd like to filter out specific items from it using pattern matching then dump it to another array.

I tried with a simple for loop but it adds empty strings to my second array.

The array was supposed to contain this strings and i just want to pull out the ones with 5_visualid_.

2_test1

3_test2

4_test5

5_visualid_unit1

2_test1

3_test2

4_test5

5_visualid_unit2

2_test1

3_test2

4_test5

5_visualid_unit3

thanks

Message Edited by peter.a.azucena@intel.com on 05-06-2008 10:26 PM

[Dennis_Knutson]

Try this. Your problem is that the function either returns the string you are looking for or an empty string. The case statement will create an array of only those strings where the search is successful. The modified VI is pretty similar to the shipping example called Separate Array Values in the Fundamentals>Arrays and Clusters section

[parthabe]

I think you cannot search an array for varying elements using the Match Pattern function & delete them.

Maybe you can see the VI attached to get an idea of how to do it.

[peter.a.azucena@intel.com]

both examples are great. thanks a lot!

[parthabe]

Just always rt-click your control & Make Current Values Default & then save the VI before posting it in the forums.

This will ensure that we can have your test data ready.

No need to type them in the post literally.

[parthabe]

Peter,

I think I misunderstood your requirement & Dennis is correct.

Which is the one you needed?

[parthabe]

Peter,

You can also go thro' this link to read more.

[peter.a.azucena@intel.com]

Dennis example are actually more simplier and with this i can continue with my next task, I've updated the VI below where i am now extracting 3 different items, the code work but i'm sure there is a better way to do this, also, if for some reason one of the result is not there, i was hoping it will fill up the cell blank but it doesn't.

[altenbach]

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peter.a.azucena@intel.com wrote:

Dennis example are actually more simplier and with this i can continue with my next task, I've updated the VI below where i am now extracting 3 different items, the code work but i'm sure there is a better way to do this, also, if for some reason one of the result is not there, i was hoping it will fill up the cell blank but it doesn't.

---

Your "failed" result starts with a "5_result...", but you are checking only for "4_result..." No match!.

If the pattern is always 4 in a row and sorted the same way (it probably is), you can do something like in the attached.

[peter.a.azucena@intel.com]

Sorry it was supposed to be 4_result_, unfortunately the sample that i gave here is only small portion of my project and the input will vary, some may have 60 lines per unit some maybe 40 so i cannot use the array size, i have to use a pattern matching or regular expression to do it, I've done this in perl scripting which is similar to this:

open(DATA, "datalog");

while(<DATA>){

if (/3_prtnm_(\d*)/){

}elsif (/5_visualid_(\S*)/){

}elsif (/4_result_(\S*)/){

}

close(DATA);