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Re: Checking version number [message #66829 is a reply to message #66828]

Fri, 12 June 2009 15:03

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Kenneth P. Bowman writes:

> I don't like to write version-dependent code, but with the improved PS
> driver in IDL 7.1 I would like to keep my old workarounds for 24-bit
> color available.
>
> The quantity stored in !VERSION is a string
>
> IDL> help, !version.release
> <Expression> STRING = '7.1'
>
> But this is not simple to convert to a number, because there are
> instances like this
>
> IDL> help, !version.release
> <Expression> STRING = '6.4.1'
>
> Is there an easy way to test whether the version is greater than or equal to 7.1?

If you only care about the *first* decimal point, IDL
usually does the right thing:

IDL> print, float('6.4.1')
6.40000
IDL> print, float('6.4.4')
6.40000

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Checking version number By: wlandsman on Fri, 12 June 2009 17:46
		Re: Checking version number By: Michael Galloy on Fri, 12 June 2009 16:14
		Re: Checking version number By: Michael Galloy on Fri, 12 June 2009 15:47
		Re: Checking version number By: David Fanning on Fri, 12 June 2009 15:07
		Re: Checking version number By: Kenneth P. Bowman on Fri, 12 June 2009 14:52
		Re: Checking version number By: David Fanning on Fri, 12 June 2009 15:03
		Re: Checking version number By: wlandsman on Fri, 12 June 2009 15:01
		Re: Checking version number By: R.G. Stockwell on Fri, 12 June 2009 14:52

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