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Re: print and printf [message #57684]

Wed, 19 December 2007 08:07

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

JHUsalon writes:

> my code:
> -----------------------------
> .run
> openw,lun,'zhut.txt',/get_lun,width=40
> myi.field8=myi.field1+myi.field4
> myi.field6=myi.field8(sort(myi.field8))
> printf,myi.field6(uniq(myi.field6))
> free_lun,lun
> end
> -----------------------------
> and it turns out to
>
> PRINTF: Expression must be a scalar or 1 element array in this
> context: <STRING Array[41952]>.
>
> but if i change printf to print, myi.field6(uniq(myi.field6)) will be
> displayed on the screen.
>
> what's the other difference btw print and printf?

I'd try this:

IDL> ? PRINTF

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: print and printf By: David Fanning on Wed, 19 December 2007 08:07
		Re: print and printf By: sujian on Wed, 19 December 2007 08:05

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