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Re: help with stopping criterion - use of BREAK [message #90118 is a reply to message #90116]

Wed, 28 January 2015 09:46

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Wednesday, January 28, 2015 at 12:09:52 PM UTC-5, g.na...@gmail.com wrote:
> Hi
>
> I am using an iterative method and I want to add a stopping criterion in which the iterating will stop when there is no change in 3 consecutive iterations. I did the following but I am getting syntax error but I am not sure whether the use of BREAK it's correct. My code is as follows:
>
> COUNTER = 0
> IF ABS(OLD_VALUE-NEW_VALUE) EQ 0 THEN COUNTER = COUNTER + 1 $
> ELSE COUNTER = 0
>
> IF COUNTER EQ 3 THEN
> BREAK
> ENDIF

IDL is line oriented. You can extend lines with $ like you did in the first part of your code.

This statement:
> IF COUNTER EQ 3 THEN
is a syntax error.

This statement:
> IF COUNTER EQ 3 THEN BREAK
is not a syntax error. Nor is this,
> IF COUNTER EQ 3 THEN $
> BREAK

Craig

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[Message index]

		help with stopping criterion - use of BREAK By: g.nacarts on Wed, 28 January 2015 09:09
		Re: help with stopping criterion - use of BREAK By: Craig Markwardt on Wed, 28 January 2015 09:46
		Re: help with stopping criterion - use of BREAK By: mick.mitanirc3 on Thu, 05 February 2015 13:26

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