Re: how do I make ncl abort on fatal errors

It is true that NCL is not and never has been consistent
about aborting on FATAL errors.
We should add an item to the to-do list to review the
error handling and see if we can make it more consistent.
  -dave
  

On Tue, 21 Apr 2009 10:32:44 -0600 (MDT)
  Mary Haley <haley_at_ucar.edu> wrote:
> Keith,
>
> Technically, I think NCL should abort on "fatal" type of
>errors,
> and not "warning" type of errors. I'm afraid there are
>places
> where we may not have been consistent with this.
>
> In this case, it seems that a non-existent file should
>cause NCL to
> abort. In other words, the following script should not
>get to
> the "print" statement:
>
> begin
> a = addfile("baaaadtest.grb","r")
> print("I don't think this line should be printed")
> end
>
> However, I've been wrong about my assumptions before!
>
> Dave B, can you weigh in here?
>
> --Mary
>
> On Tue, 21 Apr 2009, Keith Lindsay wrote:
>
>> Hi,
>>
>> Bob Tomas has informed me that adding begin and end
>>statements to the
>> beginning and end of the ncl command sequence, will
>>cause ncl to abort
>> on some fatal errors. When I add these statements to my
>>previous script,
>> and remove the quit statement, ncl is now aborting when
>>it attempts to
>> read the non-existent variable. The modified shell
>>script demonstrating
>> this is attached. Thanks Bob.
>>
>> A caveat is that even with the begin and end statements,
>>ncl does not
>> abort on all fatal errors. ncl is classifying the
>>addfile of the
>> non-existent file as fatal, but it is not aborting. I
>>don't know what
>> fatal errors ncl will abort on and which ones it will
>>not.
>>
>> Thanks, Keith
>>
>> --
>> ******************************************************************
>> Keith Lindsay
>> http://www.cgd.ucar.edu/oce/klindsay/
>> email: klindsay_at_ucar.edu phone: 303-497-1722 fax:
>>303-497-1700
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Received on Tue Apr 21 2009 - 12:33:23 MDT