I just found this well-done example, 
http://blogs.sun.com/vipul/resource/SolarSPOT2/similetimeplot.html

They use this date-time format: 2009-02-12 15:10:00.   Good enough for 
me!  Thanks again.

- John

**************************************************
John Callahan
Geospatial Application Developer
Delaware Geological Survey, University of Delaware
227 Academy St, Newark DE 19716-7501
Tel: (302) 831-3584  
Email: [email protected]
http://www.dgs.udel.edu
**************************************************



John Callahan wrote:
> Thanks Stefano.  Will do.
>
> Do you know of any examples that use hourly/minutely data?  The 
> examples on http://www.simile-widgets.org/timeplot/ have only daily 
> resolution.  I thought I've seen some in the past but can't locate 
> them now.  Thanks.
>
> - John
> **************************************************
> John Callahan
> Geospatial Application Developer
> Delaware Geological Survey, University of Delaware
> 227 Academy St, Newark DE 19716-7501
> Tel: (302) 831-3584  
> Email: [email protected]
> http://www.dgs.udel.edu
> **************************************************
>
>
> Stefano Mazzocchi wrote:
>> John Callahan wrote:
>>   
>>> What is the proper (most efficient or preferred) format for using dates 
>>> in Timeplot?
>>>
>>> I have several time series text/cvs files with separate columns for 
>>> year, month, day, hour, minute.  (Much of my data is hourly or 
>>> sub-hourly.)  Would it be best to...
>>>
>>> 1) load the data as is and then process through javascript to merge 
>>> strings or use something like "new Date(Date.UTC(2008,0,17,20,00,00,0))."
>>>
>>> 2) pre-process the data to create another column with an efficient 
>>> format, maybe as "1995-02-04 10:20:01Z" or "1995-02-04T10:20:01+5:00"?
>>>
>>> 3) something else?
>>>     
>>
>> Timeplot's data import is not as flexible as I'd love it to be, so #2 is 
>> probably your best option right now. Look at the examples to see what 
>> format timeplot expects you to have your dates in.
>>
>>   

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