Hi!

 

I have a field containing a file name for example:

 

af10-2689_001

 

I am trying to remove the prepending "af" and everything after the underscore just leaving the

xx-xxxx in the middle.

 

This is what I have so far, but it is not working. I am getting an error message that "List usage is not allowed in this calculation."  Not sure what I doing incorrectly.

 

GetValue (Substitute (file name ; ["af" ; ""] ;  ["_" ; ""]  ; ¶ ) ; 1 )

 

Any suggestion would be most appreciated.

 

Thanks!

Got it!

 

GetValue (Substitute (file name ; ["ck" ; ""] ;  ["_" ; "¶"] ) ; 1 )

Is it "af" or "ck"? And can you be sure there won't be another occurrence of the string in the file name - say "af10-baf9_001"?

Yes. The rest of the values are numeric.

Thanks for bringing that to my attention!

The rest of the values are numeric.

 

Ah. Then you should also note that a dash, when placed between two digits, is NOT a word separator but an underscore is. Therefore =

LeftWords ( file name ; 1 )

would return "af10-2689" in your original example, and =

Filter ( LeftWords ( file name ; 1 ) ; "0123456789-" )

would also remove ANY non-numerical characters without having to hard-code them, resulting in "10-2689".

Ah. Then you should also note that a dash, when placed between two digits, is NOT a word separator but an underscore is. Therefore =

LeftWords ( file name ; 1 )

would return "af10-2689" in your original example, and =

Filter ( LeftWords ( file name ; 1 ) ; "0123456789-" )

would also remove ANY non-numerical characters without having to hard-code them, resulting in "10-2689".

 

Perfect!