lsqnonneg.m File Reference

Functions
return endif	if (!(nargin >=2 &&nargin<=4 &&ismatrix(c)&&ismatrix(d)&&isstruct(options))) print_usage()
	if (isempty(x)) x
	if (useqr)[q
	while (iter< max_iter) while(iter< max_iter) iter++
if(isempty(idx)) x(	x (p)
	xx (p)
	p (idx)
	w (p)
	if (!any(w > 0)) if(useqr) useqr
Variables
	function [x, resnorm, residual, exitflag, output, lambda]
endif	m = rows (c)
	n = columns (c)
else	x = max (x, 0)
endif	useqr = m >= n
	max_iter = optimget (options, "MaxIter", 1e5)
	p = find (x > 0).'
	r = qr (c(:,p), 0)
endif	iter = 0
else	xtmp = c(:,p) \ d
endif	idx = find (xtmp < 0)
	break
else	pidx = p(idx)
	sf = x(pidx)./(x(pidx) - xtmp(idx))
	alpha = min (sf)
	xx = zeros (n, 1)
endif endif endwhile	w = c'*(d - c*x)
	continue

---

Function Documentation

if

(

!

anyw > 0

)

if

(

useqr

)

if

(

isempty(x)

)

return endif if

(

!

nargin >=2 &&nargin<=4 &&ismatrix(c)&&ismatrix(d)&&isstruct(options)

)

p

(

idx

)

w

(

p

)

while

(

)

if (isempty (idx)) x( x

(

p

)

xx

(

p

)

---

Variable Documentation

alpha = min (sf)

else break

continue

function[x, resnorm, residual, exitflag, output, lambda]

Initial value:

 lsqnonneg (c, d, x = [], options = struct ())

  if (nargin == 1 && ischar (c) && strcmp (c, 'defaults'))
    x = optimset ("MaxIter", 1e5)

endif endif idx = find (xtmp < 0)

endif iter = 0

endif m = rows (c)

max_iter = optimget (options, "MaxIter", 1e5)

n = columns (c)

p = find (x > 0).'

else pidx = p(idx)

r = qr (c(:,p), 0)

sf = x(pidx)./(x(pidx) - xtmp(idx))

endif useqr = m >= n

endif endif endwhile w = c'*(d - c*x)

else x = max (x, 0)

if(useqr xtmp = c(:,p) \ d

xx = zeros (n, 1)