How to assign start value to lower and upper bound in lsqnonlin

Hi there,

I have been facing a problem in solving my problem through lsqnonlin. The main problem is the lower and upperbound values. I supply vector of 10 elements for upper and lower bound.

The problem is that i want to change the start position/value in both the upper and lower bound vectors. for e.g.

    % 
  lb          = ones(length(coef), 1) * -1;       %lower  boundaries:
  ub          = ones(length(coef), 1);            % upper boundaries:
  lb(1:4)     =-1000;
  ub(1:4)     =1000;
  %

Since the lb(1) = -1000 and ub(1) = 1000. They will run from 1 to 1000. I want to change the start value from 1 to some different value. Does anyone has idea what should i do or where to look in the source code or any alternate ideas?

Thanks..

Answer 1

[Matt J]

Is this what you want?

 positions=startvalue+(0:3);

 lb(positions)=-1000;
 ub(positions)=1000;