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Re: extracting numbers [message #48028 is a reply to message #48026]

Thu, 23 March 2006 06:34

Ken Mankoff
Messages: 158
Registered: February 2000

Senior Member

On Wed, 22 Mar 2006 kl_tah@hotmail.com wrote:
> Hi, does anyone happen to know how to extract a sequence of
> numbers (including the sign) between two characters? for eg. I
> have
>
> AAAA = -23.445 /BBBBB
> and could like to extract the number between '=' and '/'

IDL> print, stregex(string, "[0-9.\-]+", /subexpr, /extract)

works in the example above. More generally, removing all letters
would be this:

IDL> print, stregex(string, "[^a-zA-Z]+", /subexpr, /extract)

But you get the = and the trailing "/".

IDL> print, stregex(string, "[^\ \=a-zA-Z\/]+", /subexpr, /extract)

removes all spaces, equals, letters, and / characters...

-k.

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[Message index]

		Re: extracting numbers By: Norbert Hahn on Thu, 23 March 2006 08:06
		Re: extracting numbers By: Ken Mankoff on Thu, 23 March 2006 06:34
		Re: extracting numbers By: Klaus Scipal on Wed, 22 March 2006 23:43

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