comp.lang.idl-pvwave archive: archive » Re: Relative distances between vector elements and search for matches in other vector.

Home » Public Forums » archive » Re: Relative distances between vector elements and search for matches in other vector.

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

Re: Relative distances between vector elements and search for matches in other vector. [message #80144 is a reply to message #80010]

Thu, 26 April 2012 14:30

cgguido
Messages: 195
Registered: August 2005

Senior Member

Trifon, you're most welcome.

If you can estimate the max possible size of your result (even if you overestimate it by a lot) I would do:

selected_dep=fltarr(1e4)*0-1
;this creates a huge array with "impossible values" -1.
Then you fill it as you go with real values, And at the end just do:
selected_dep = selected_dep[ where(selected_dep NE -1)]
This is usually much faster!

In general, I am still confused about what you are trying to do. Could you give a simple example of input and output? Something like:

;inputs:
r1=[1,3,3,4,5]
r2=[2,-1,4,3]

;outputs:
3,4

Don't bother with technical (geological) terms, they just confuse non-specialists. Just give us the simple examples and we'll see if we can speed this up for you a bit.

Gianguido

Report message to a moderator

[Message index]

		Re: Relative distances between vector elements and search for matches in other vector. By: Tito on Thu, 26 April 2012 06:48
		Re: Relative distances between vector elements and search for matches in other vector. By: cgguido on Wed, 25 April 2012 08:03
		Re: Relative distances between vector elements and search for matches in other vector. By: cgguido on Wed, 25 April 2012 07:45
		Re: Relative distances between vector elements and search for matches in other vector. By: David Fanning on Wed, 25 April 2012 07:40
		Re: Relative distances between vector elements and search for matches in other vector. By: cgguido on Thu, 26 April 2012 14:30

Previous Topic:	Coyote Graphics Update: cgHistoplot
Next Topic:	How to make an input parameters file??

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 16:25:25 PDT 2025

Total time taken to generate the page: 1.91873 seconds