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Re: linfit with string time array (x) [message #63434 is a reply to message #63432]

Mon, 10 November 2008 21:45

lbnc
Messages: 15
Registered: January 2005

Junior Member

On 10 Nov, 16:43, Reimar Bauer <R.Ba...@fz-juelich.de> wrote:
>
> if the numbers are written in a time format it is better to show an
> example. Those need to be converted into a number. I would suggest to
> use julian seconds (seconds since 2000-01-01 00:00:00 UTC)

But why?! Why go through the bother when IDL has JULDAY and CALDAT?
With the LABEL_DATE function you get nice annotations of axes and you
don't need to worry about whether the routines you download somewhere
of the web are actually right.

To answer the original question, as Reimar alrady said, you need to
convert the strings to some sort of numeric value, for example julian
day. For that you need to parse the year, month, day, hour, minute,
second from your string and pass the to, for example, JULDAY. The IDL
documentation knows more about how to use JULDAY and LABEL_DATE.

Cheers
Lasse Clausen

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[Message index]

		Re: linfit with string time array (x) By: David Fanning on Tue, 11 November 2008 05:39
		Re: linfit with string time array (x) By: David Fanning on Tue, 11 November 2008 05:36
		Re: linfit with string time array (x) By: R.Bauer on Tue, 11 November 2008 00:51
		Re: linfit with string time array (x) By: R.Bauer on Tue, 11 November 2008 00:38
		Re: linfit with string time array (x) By: julia.walterspiel on Tue, 11 November 2008 00:28
		Re: linfit with string time array (x) By: lbnc on Mon, 10 November 2008 21:45
		Re: linfit with string time array (x) By: R.Bauer on Mon, 10 November 2008 08:43
		Re: linfit with string time array (x) By: Michael Galloy on Tue, 11 November 2008 12:31

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