comp.lang.idl-pvwave archive: archive » Re: How to add 'd' to get the correct julian conversion ?

Home » Public Forums » archive » Re: How to add 'd' to get the correct julian conversion ?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: How to add 'd' to get the correct julian conversion ? [message #33737 is a reply to message #33729]

Thu, 23 January 2003 08:46

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

Kolbjorn Bekkelund <kolbjorn@arctic-linux.tnett.no> writes:

> How can I add the NEEDED d to get this:
>
> 2452662.305203d
>
> out of this:
> maxtime = jul2cal((data(0,maxgust_time)), /TO_STRING, /MDY)
>
> In my program (data(0,maxgust_time)) fetches 2452662.305203 out of the
> array, but if I don't add the d to the julian date it calculates the
> wrong time in the above statement.

You can use
double(data(0,maxgust_time)),
but the variable DATA should already be in double precision. At least
it should be if you expect 13 decimal digits of precision to be
maintained. When you type the number directly on the command line,
you probably do have to use the "D" to indicate double precision, but
you should not have to if the variable DATA is already double.

Craig

--
------------------------------------------------------------ --------------
Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
------------------------------------------------------------ --------------

Report message to a moderator

[Message index]

		Re: How to add 'd' to get the correct julian conversion ? By: thompson on Thu, 23 January 2003 15:38
		Re: How to add 'd' to get the correct julian conversion ? By: Paul Van Delst[1] on Thu, 23 January 2003 14:20
		Re: How to add 'd' to get the correct julian conversion ? By: David Fanning on Thu, 23 January 2003 14:15
		Re: How to add 'd' to get the correct julian conversion ? By: Kolbjorn Bekkelund on Thu, 23 January 2003 12:02
		Re: How to add 'd' to get the correct julian conversion ? By: Craig Markwardt on Thu, 23 January 2003 08:46
		Re: How to add 'd' to get the correct julian conversion ? By: David Fanning on Thu, 23 January 2003 08:19
		Re: How to add 'd' to get the correct julian conversion ? By: R.Bauer on Fri, 31 January 2003 10:54

Previous Topic:	How to eliminate trailing zeros in a string?
Next Topic:	PNGs with alpha channel?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 17:20:13 PDT 2025

Total time taken to generate the page: 0.80610 seconds