Thank you very much for that clear description. That was the problem and it is producing the expected results.
On Monday, April 6, 2015 at 10:53:40 AM UTC-4, ggggg wrote: > > I suspect you want > > ## generate next filter order > if i==1 > a[i] = g > else > a[i-1:-1:1] = a[i-1:-1:1]-g*a[i-1:-1:1] # **** this is my problem > area***** > end > > a is first assigned as a Vector{Float64} of length p. Then you did a=g > which assigns a as a Float64 (this is bad for performance as well, since > it's not type stable). Then you try to a[1] when i=2, but in Julia (unlike > MATLAB, and I assume octave) that is not a valid access. You want to make > sure a stays as a Vector{Float64} the whole time, and while you can change > the length if you want, you will probalby be better off if you keep it the > same length as well. >