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Re: how to tell it is character or it is number? [message #55209]

Tue, 07 August 2007 10:59

queiny
Messages: 15
Registered: November 2005

Junior Member

Many thanks!!

I think both of your suggestions work for me. Someone also suggest use
function 'byte' to see whether it is number or character.

>> http://idlastro.gsfc.nasa.gov/ftp/pro/misc/valid_num.pro
>
> I would just try stregex. From what you've shown so far, all it would
> take is this:
>
> if stregex( string, '[^0-9]', /boolean ) then ; this not numeric
> else ; this is numeric
>
> that is assuming, of course, that the numeric data you will be
> checking only contains the numbers 0-9. If you have negative signs,
> or decimal points, or whitespace, then above regular expression will
> have to be adjusted accordingly.

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[Message index]

		Re: how to tell it is character or it is number? By: queiny on Tue, 07 August 2007 10:59
		Re: how to tell it is character or it is number? By: Haje Korth on Tue, 07 August 2007 10:48
		Re: how to tell it is character or it is number? By: Conor on Tue, 07 August 2007 10:41
		Re: how to tell it is character or it is number? By: wlandsman on Tue, 07 August 2007 08:38

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