Re: [Cdat-discussion] Define time axis with cdtime?

[sudipta s. <sdp...@gm...>]

Thanks once more Bill.
I did think it was just for user convenience but your comment made it clear
for me.
Appreciated

On Sat, May 23, 2015 at 5:13 PM, Hayes, William <bh...@ca...>
wrote:

> BTW, I found that some cdms / cdutil fuctions (like .YEAR)
> really insist on having
> ta.id='time'
> and having
> ta.units ='days since YYYY-MM-DD'
> They are not just for users to read.
>
> Good luck,
> Bill
>
>
> On Sat, May 23, 2015 at 2:09 PM, sudipta sarkar <sdp...@gm...>
> wrote:
>
>> Hi Bill
>> Thanks for your answer.
>> That is indeed what I was looking for. Thanks a lot!!
>> I was aware of the pieces but was just not sure how to put them together.
>> Your answer made it very clear.
>> Thanks again
>>
>>
>> On Sat, May 23, 2015 at 4:50 PM, Hayes, William <
>> bh...@ca...> wrote:
>>
>>> Hi Sudipta,
>>> I've only worked with monthly data, but I believe
>>> for your daily data you would do something like:
>>>
>>> Assuming the number of days was 4000 (you'll have to calculate this):
>>>
>>> days_list = range(4000)
>>> ta = cdms2.createAxis( days_list )
>>> ta.id = 'time'
>>> ta.units = 'days since 2004-10-01'
>>> var.setAxis(0, ta)
>>> cdutil.setTimeBoundsDaily(var, 1 )  # 1 is daily frequency, assumes 1
>>> data pt per day
>>>
>>> Bill Hayes
>>> Carnegie Institute DGE
>>>
>>>
>>> On Sat, May 23, 2015 at 1:10 PM, sudipta sarkar <sdp...@gm...>
>>> wrote:
>>>
>>>> Hi All
>>>> I am trying to concatenate several H5 daily data global gridded file
>>>> into a single array 3D array (time, lat, long).
>>>>
>>>> I can define the lat and long axis for this new 3d array. But I am not
>>>> sure how to create the time axis for this 3D array.
>>>> My start time is 2004-10-01 and end time is 2015-05-20.
>>>>
>>>> Do I need to create a cdtime time array with these start and end dates
>>>> and then define a time axis based on this time array?
>>>>
>>>> Can someone please show me how. I am not sure how to go about this.
>>>>
>>>> Thanks
>>>>
>>>>
>>>>
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>>>
>>
>