comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » Cumulative total

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

Cumulative total [message #12870]

Thu, 17 September 1998 00:00

bowman
Messages: 121
Registered: September 1991

Senior Member

Can anyone suggest a more efficient way to compute the running cumulative
total of a 1-D array than using FOR loops? That is, a built-in function
or array operator to compute as follows:

n = 100L
f = FINDGEN(n) ;Just an example
f_cum = FLTARR(n)
f_cum[0L] = f[0L]
FOR i = 1L, n-1 DO f_cum[i] = f_cum[i-1L] + f[i]

Thanks, Ken Bowman

--
Dr. Kenneth P. Bowman, Professor 409-862-4060
Department of Meteorology 409-862-4466 fax
Texas A&M University bowmanATcsrp.tamu.edu
College Station, TX 77843-3150 Replace AT with @

Report message to a moderator

[Message index]

		Cumulative total By: bowman on Thu, 17 September 1998 00:00
		Re: Cumulative total By: Thomas A. McGlynn on Thu, 24 September 1998 00:00
		Re: Cumulative total By: Martin Schultz on Mon, 21 September 1998 00:00
		Re: Cumulative total By: davidf on Fri, 18 September 1998 00:00

Previous Topic:	Re: call_external -> multiprocessing?
Next Topic:	Re: How can I introduce a 'Interrupt button' into an IDL loop.

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 06:18:26 PDT 2025

Total time taken to generate the page: 0.32263 seconds