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May 4, 2017

## Extracting a particular string from a longer one

 Source Temperature MZ_ES20-ATF786_D03-R_8x8-5hz_NoCG_0klux-black3--5degc__20181105_203705 -5 MZ_ES20-ATF786_D03-R_8x8-5hz_NoCG_0klux-grey17--30degc__20181105_194659 -30 MZ_ES20-ATF786_D03-R_8x8-5hz_NoCG_0klux-white64-70degc__20181105_183920 70

Hi,

I am trying to extract the temperature from the "Source" column in the JMP table above using JSL

In the Temperature column I have written the results that I would like. My problem is that the delimiter between the colour

(black3,grey17 and white64) and the temperature is a dash "-" but sometimes the temperature is negative which is also "-"

I have tried a number of things with the Word function but so far to no avail. Any help with this would be apprecated.

Thanks and regards,

David

2 ACCEPTED SOLUTIONS

Accepted Solutions

Staff

Joined:

Jun 23, 2011

Solution

## Re: Extracting a particular string from a longer one

This problem is easily solved by the Regex() string function. Try this:

``Num( Regex( :Source, "-(-?\d\d?\d?)degc", "\1" ) )``
Learn it once, use it forever!

Super User

Joined:

Jun 22, 2012

Solution

## Re: Extracting a particular string from a longer one

Here is a formula that I believe will do the trick

``````degCPosition = Contains( :Source, "degc__" ) - 1;
i = degCPosition;
While( Substr( :Source, i, 1 ) != "-", i-- );
If( Substr( :Source, i - 1, 1 ) == "-",
result = Num( Substr( :Source, i, (degCPosition - i) + 1 ) ),
result = Num( Substr( :Source, i + 1, degCPosition - i ) )
);
result;``````

Jim
4 REPLIES 4

Staff

Joined:

Jun 23, 2011

Solution

## Re: Extracting a particular string from a longer one

This problem is easily solved by the Regex() string function. Try this:

``Num( Regex( :Source, "-(-?\d\d?\d?)degc", "\1" ) )``
Learn it once, use it forever!

Community Trekker

Joined:

May 4, 2017

## Re: Extracting a particular string from a longer one

Hi,
Thank you , that works and very succinct !

Kind Regards,
David.

Super User

Joined:

Jun 22, 2012

Solution

## Re: Extracting a particular string from a longer one

Here is a formula that I believe will do the trick

``````degCPosition = Contains( :Source, "degc__" ) - 1;
i = degCPosition;
While( Substr( :Source, i, 1 ) != "-", i-- );
If( Substr( :Source, i - 1, 1 ) == "-",
result = Num( Substr( :Source, i, (degCPosition - i) + 1 ) ),
result = Num( Substr( :Source, i + 1, degCPosition - i ) )
);
result;``````

Jim
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Community Trekker

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May 4, 2017