| too many loops [message #29132] |
Mon, 04 February 2002 10:54 |
Jeff Newmark
Messages: 1
Registered: February 2002
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Junior Member |
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Hi All,
I probably should be able to find this, but a quick look
didn't give me a great answer so here goes.
I have a nested loop, theoretically each limit is 1000.
Obviously, I do not wish to have 1 million iterations
here. Any suggestions on how to get rid of one of
the loops?
dat = fltarr(n,n)
image=fltarr(n,n,n)
i=fltarr(n,n)
j=fltarr(n,n)
mu=fltarr(n,n)
nu=fltarr(n,n)
r2=fltar(n,n)
rs2=fltarr(n,n)
; the arrays are all initialized or populated
; section left out for brevity
for a=0,N-1 do for b=0,N-1 do $
dat[i[a,b],j[a,b]]=dat[i[a,b],j[a,b]]+$
image[mu[a,b],nu[a,b],scalar]*fa[r2[a,b]]/rs2[a,b]
thanks,
Jeff
--
----------------------------------------------------------
Dr. Jeffrey Newmark Naval Research Lab, Code 7661
voice: (202) 767-0244 4555 Overlook Ave., SW
email: newmark@midas.nrl.navy.mil Washington, DC 20375
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