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Re: array of Julian Days [message #63554 is a reply to message #63551]

Tue, 11 November 2008 13:57

R.G. Stockwell
Messages: 363
Registered: July 1999

Senior Member

"Bulrush" <Wasit.Weather@gmail.com> wrote in message
news:2a70777d-8578-42bc-9700-9e6be44a2fb4@a3g2000prm.googleg roups.com...
> Hello,
> I wanted to generate an array of Jdays of the year, and extract some
> of them according to 8 days of increment. However the following code I
> could think of does not work.
>
> Any help is appreciated.
>
> Jdays = Lindgen (366)
> Start_day= 265
> End_day = 361
>
> Daystep = 265
> ; collect the days
> WHILE Daystep LE 361and Daystep GT 265 Do Begin
> arr = Where (Jdays LE Daystep+8 and Jdays GT Daystep, count)
> Days = JDays[arr]
> EndWhile
>
> What is wrong with it? How can I get the job done?
>
> Thanks

JD for current dates is quite a large number, but that is besides the point.
From your example, i don't know if you are trying to extract 8 days,
or trying to extract a series of 8 day arrays.

Here is an example (the simple, select 8 days one):

Jdays = Lindgen (366)
Start_day= 265
End_day = 361

Daystep = 265
; collect the days
arr = Where (Jdays LE Daystep+8 and Jdays GT Daystep, count)

if count gt 0 then Days = JDays[arr] else days = [-1]

print,days

Cheers,
bob

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[Message index]

		Re: array of Julian Days By: David Fanning on Wed, 12 November 2008 10:13
		Re: array of Julian Days By: Wasit.Weather on Wed, 12 November 2008 09:09
		Re: array of Julian Days By: David Fanning on Wed, 12 November 2008 07:37
		Re: array of Julian Days By: Wasit.Weather on Wed, 12 November 2008 07:21
		Re: array of Julian Days By: R.Bauer on Wed, 12 November 2008 01:08
		Re: array of Julian Days By: R.Bauer on Wed, 12 November 2008 01:05
		Re: array of Julian Days By: Craig Markwardt on Tue, 11 November 2008 15:24
		Re: array of Julian Days By: Wasit.Weather on Tue, 11 November 2008 14:37
		Re: array of Julian Days By: Wasit.Weather on Tue, 11 November 2008 14:35
		Re: array of Julian Days By: David Fanning on Tue, 11 November 2008 14:12
		Re: array of Julian Days By: R.G. Stockwell on Tue, 11 November 2008 13:57
		Re: array of Julian Days By: R.Bauer on Tue, 11 November 2008 13:51
		Re: array of Julian Days By: R.Bauer on Thu, 13 November 2008 01:32

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