Need help in stepwise function

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sagar pokhrel
sagar pokhrel on 16 Sep 2014
Commented: Saagar on 17 Sep 2014
r=[0.5,1,1.5....5]; theta= linspace(0,2*pi,73); [theta,r]=meshgrid(theta,r); [x11,y11]=pol2cart(theta,r); x1= x11(:);
% I have a function z whose input needs to be x and y between [-1,1] so I need to change x and y both %such that for x1>1, x=1, x1<-1, x=-1 and -1<=x1<=1, x=x1 % i tried this for k=1:length(x1) if x1(k)<-1 x(k)=-1 else if x1(k)>=-1 && x1(k)<= 1 x(k)=x1 else if x1(k)>1 x(k)=1 end end
z= 1.3249-.004937*x+5.43243*x.^2-1.153*x.*3+4.2693*y.^6 % Repeating same for Y as well. when I run this i get In an assignment A(I)=B and I must be same. Is anyone able to help me. Thanks in advance

Accepted Answer

Saagar
Saagar on 16 Sep 2014
for k=1:length(x1)
if x1(k)<-1
x(k)=-1
elseif x1(k)>=-1 && x1(k)<= 1
x(k)=x1(k)
else x1(k)>1
x(k)=1
end
end
Sorry, didn't realize I didn't have the "code" option selected, should be easier to read now. The problem you are getting is because you are currently trying to make x(k)=x1, but x1 is currently a vector, and you only need the corresponding element x1(k).
Hope this helps.
  2 Comments
sagar pokhrel
sagar pokhrel on 17 Sep 2014
I used same for x and y and ran the code but it just gave me single output instead of length (x1)( 730). How do i run code for each 830 x and corresponding Y to get 830 output
Thanks in advance
Saagar
Saagar on 17 Sep 2014
any chance that you could post the code you used? it would make it easier to follow what you are asking

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