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Re: !NULL in IDL 7.1 vs. 8.0 [message #94315 is a reply to message #94313]

Thu, 06 April 2017 12:09

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Thursday, April 6, 2017 at 4:39:30 AM UTC-4, zhangche...@gmail.com wrote:
> On Thursday, 9 February 2012 06:08:33 UTC+8, Paulo Penteado wrote:

>>> Tony
>
> Do you know how to use "!null" without error in IDL 7.1? Since an IDL library uses '!null', however my working environment is IDL 7.1

In 7.1 you could try defining a system variable

defsysv,'!NULL',-10001

which will at least get you past compilation errors because !NULL doesn't exist in 7.1. But the author probably uses other post-V8.0 syntax such as the /NULL keyword to WHERE(), so you probably still won't be able to compile. So I would think you have to edit the code to remove the use of !NULL.

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[Message index]

		Re: !NULL in IDL 7.1 vs. 8.0 By: penteado on Wed, 08 February 2012 14:08
		Re: !NULL in IDL 7.1 vs. 8.0 By: zhangchengxin2011 on Thu, 06 April 2017 01:39
		Re: !NULL in IDL 7.1 vs. 8.0 By: wlandsman on Thu, 06 April 2017 12:09

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