On 02/12/2012 09:33, Jens Simon Strom wrote:
Hello Scilab experts,
This script functions:
function SAQ=!f(p), SAQ=sum( ( p(1)+p(2)*xi-yi ).^2 ), endfunction
xi=1:1000 ;
yi=2*xi+3;
popt=fminsearch(!f,[0;0])
If I replace yi by y everywhere the script functions too as expected.
If I replace xi by x everywhere an error occurs: "Inconsistent subtraction in
function !f.
What is wrong here?
Kind regards
Jens
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hi
that's because the way scilab uses local variables
try "declaring" all the variables needed in your function:
function SAQ=!f(p,x,y), SAQ=sum( ( p(1)+p(2)*x-y ).^2 ), endfunction
then use the "list approach" in fminsearch
x=1:1000 ;
y=2*xi+3;
popt=fminsearch(list(!f,x,y),[0;0]))
I did not try this code because it's sunday and i don't want to.
but tell me if it does not work.
kind regards
AVS
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