I have a field with values similar to this: TagName=15PI008_15
The _15 portion of this value is the part I need to extract into a new field called "WellNumber". However, I need to transform this value into something else that makes more sense to the user e.g.
_15 = H315
_3 = H305
_19 = H319
etc.
How can I do this in search and is there a way of doing this by default?
Hi stevenbutterworth,
you can move in two ways depending by the number of values you have, in other words, you have anyway to extract the WellNumber using rex command
| rex field=your_field "_(?<WellNumber>\d+)"
then if you have few different values, you can use eval command
| eval New_field=case(WellNumber="15","H315",WellNumber="3","H305",WellNumber="19","H319")
if instead you have many different values, you can build a lookup containing the correlation values:
WellNumber,New_field
15,H315
3,H305
19,H319
and use lookup command
| lookup my_lookup.csv WellNumber OUTPUT New_field
Bye.
Giuseppe
Hi stevenbutterworth,
you can move in two ways depending by the number of values you have, in other words, you have anyway to extract the WellNumber using rex command
| rex field=your_field "_(?<WellNumber>\d+)"
then if you have few different values, you can use eval command
| eval New_field=case(WellNumber="15","H315",WellNumber="3","H305",WellNumber="19","H319")
if instead you have many different values, you can build a lookup containing the correlation values:
WellNumber,New_field
15,H315
3,H305
19,H319
and use lookup command
| lookup my_lookup.csv WellNumber OUTPUT New_field
Bye.
Giuseppe
Thanks Giuseppe
I did have something like this in mind but wasn't sure of the execution method.
It works great now.
Steve
To do it in a search, first extract WellNumber using rex
.
... | rex field=TagName "_(?<WellNumber>\d+)" |
Then transform WellNumber using either case
or lookup
... | case WellField=case(WellNumber==15,"H315", WellNumber==3, "H305", WellNumber==19, "H319", 1==1, WellNumber) | ...
... | lookup WellNumbers.csv WellNumber OUTPUT WellField | ...
I'd use case
if the number of options is small and doesn't change often; otherwise, use a lookup.
| replace "_*" WITH "H3*" IN WellNumber
I'm not sure it's what u want.
Would you rather do it directly from extraction?
try something like this:
|rex field=fieldname "_(?<WellNumber>\d+)"|eval WellNumber="H3".substr("00".WellNumber,-2)