Re: Re: ut_inv_calendar

The year, month, day, and hour values returned by the internal Udunits
routine are all integers to start with, so there's no rounding or
truncating going on at the NCL end of things. Only the "seconds"
values are returned as float.

Now that I think about it, maybe this option '5' should be '-5',
since the other negative options return integers...

--Mary

On Mon, 7 Jul 2008, Dave Allured wrote:

> Reading the documentation for ut_calendar, I see that there already are
> several other options for specialized result formats. In light of this and
> the symmetry issue with ut_inv_calendar, I think it's reasonable to add
> option 5 for integers. I would use this option if available. Thanks to NCL
> for adding this one.
>
> For options +2/-2 through +4/-4, YYYYMM etc. as type double or integer, are
> the time values rounded or truncated? I suggest that this be added to the
> documentation.
>
> --Dave
>
> Mary Haley wrote:
>>
>>
>> On Fri, 4 Jul 2008, Mateus Teixeira wrote:
>>
>>> Thanks Dave,
>>>
>>> Maybe ut_calendar could have an option equivalent to 0 that returns
>>> integers.
>>
>> In version 5.0.1, ut_calendar will have an "option=5" that is
>> identical to option=0, except it returns integers. The seconds
>> values will be truncated.
>>
>> --Mary
>>
>>> Regards,
>>>
>>>
>>> 2008/7/3 Dave Allured <dave.allured_at_noaa.gov>:
>>>
>>>> Mateus,
>>>>
>>>> I think it is usually better to keep unencoded date information as
>>>> integers
>>>> rather than floats. You can do this in one line when calling
>>>> ut_calendar:
>>>>
>>>> ymd_hms = floattoint (ut_calendar (time, 0))
>>>>
>>>> Then you do not have to do the multiple reverse conversions for
>>>> ut_inv_calendar. HTH.
>>>>
>>>> Dave Allured
>>>> CU/CIRES Climate Diagnostics Center (CDC)
>>>> http://cires.colorado.edu/science/centers/cdc/
>>>> NOAA/ESRL/PSD, Climate Analysis Branch (CAB)
>>>> http://www.cdc.noaa.gov/
>>>>
>>>> Mateus Teixeira wrote:
>>>>
>>>>> Dear NCL developers,
>>>>>
>>>>> Is it possible modify ut_inv_calendar arguments to numerical type?
>>>>>
>>>>> Sometimes is necessary to convert a set of dates from one time unit to
>>>>> another time unit.
>>>>> Since ut_calendar with 0 option returns float, it would avoid the float
>>>>> to
>>>>> integer conversion to put their information into ut_inv_calendar.
>>>>>
>>>>> Regards,
>>>>>
>>>>> --
>>>>> Mateus da Silva Teixeira
>>>>> Meteorologista
>>>>> Instituto de Pesquisas Meteorol�gicas - IPMET (www.ipmet.unesp.br <
>>>>> http://www.ipmet.unesp.br>)
>>>>> Universidade Estadual Paulista - UNESP (www.unesp.br
>>>>> <http://www.unesp.br
>>>>>> )
>>>>> Bauru, SP
>>>>>
>>>>> Registered Linux User #466740
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Received on Mon Jul 07 2008 - 16:49:05 MDT