[ncl-talk] setting of eof in NCL

[Mary Haley]

Hi Arnold,

Rick is correct in his reasoning about the opt argument: It needs to be set
to True in order for any possible attributes to take effect. I verified
that this is what the code for eofunc and eofunc_ts is doing under the hood.

So, for example, if you set:

optETS      = True
optETS at jopt = 1

and then call eofunc or eofunc_ts with optETS, then jopt will be set to 1
and has some special meaning to both routines (that is different for both
routines).

If, however you set:

optETS      = False
optETS at jopt = 1

then it doesn't matter what jopt is set to, because it will be ignored,
given that optETS is False. In the above case, then jopt will default to 0.

Hope this clears the air a little.

--Mary


On Tue, Mar 20, 2018 at 9:42 PM, Rick Brownrigg <brownrig at ucar.edu> wrote:

> Hi Arnold,
>
> I'm not expert about EOF functions, but in general, the NCL idiom is that
> if an optional-argument or resources-argument is of type boolean, then any
> attributes associated with it will be in play if the argument is True, and
> otherwise, only defaults will apply regardless of what attribute settings a
> user may have set.  I haven't verified that behaviour for your specific
> question, but the docs for both eofunc and eofunc_ts do seem to suggest
> it.  Are you seeing something specific that leads you to believe otherwise?
>
> Rick
>
> On Tue, Mar 20, 2018 at 9:25 PM, <Arnold.Sullivan at csiro.au> wrote:
>
>> Hi there,
>>
>>
>>
>> Need some help of the settin of the EOF.
>>
>>
>>
>> Do we have to set opt to be true in eofunc  and false in eofunc_ts?
>>
>>
>>
>> Can we do false to both or true for both, any different?
>>
>>
>>
>> Cheers,
>>
>>
>>
>> Arnold
>>
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