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Re: Tick labels and dates [message #41838 is a reply to message #41834]

Tue, 23 November 2004 14:01

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Haje Korth writes:

> you want to look at the examples given for the LABEL_DATE function. It
> assumes that you have time array as Julian day. If you don't (and who does)
> you will have to do your own conversion. I keep my time usually as CDF
> epoch, so I wrote myself a little function that converts CDF epoch first to
> year, month, day, hh, mm, ss with cdf_epoch and then use julday to calculate
> the julian day from these data. Now conversion is pretty much transparent
> without having to worry what Julian day means. LABEL_DATE is pretty flexible
> in the date format and you can easily switch between the formats you like.
> AFAIK, there is no other build-in functionality for time axis.

There are some good time and date functions on the JHUAPL
IDL library site, too. I'm too jet lagged to remember what
they are right now (and too unmotivated to look), but a
search of the one line catalog file should turn them up.

http://fermi.jhuapl.edu/s1r/idl/s1rlib/local_idl.html

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: Tick labels and dates By: Mark Hadfield on Wed, 24 November 2004 16:18
		Re: Tick labels and dates By: Michael Wallace on Wed, 24 November 2004 14:23
		Re: Tick labels and dates By: Mark Hadfield on Wed, 24 November 2004 13:34
		Re: Tick labels and dates By: R.Bauer on Wed, 24 November 2004 00:58
		Re: Tick labels and dates By: David Fanning on Tue, 23 November 2004 14:01
		Re: Tick labels and dates By: Haje Korth on Tue, 23 November 2004 13:41

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