[SOLVED] Matlab error - not a valid target for an assignment.

[vipinlal]

 realW = 2.0*cos(2.0*pi*20/2001);
imagW = sin(2.0*pi*20/2001);
y = 0;
d1 = 0.0;
d2 = 0.0;
N=2001;
for n= 1:N
  {
    y  = x(n) + realW*d1 - d2;
    d2 = d1;
    d1 = y;
  }
end 
resultr = 0.5*realW*d1 - d2;
resulti = imagW*d1;

I am getting the following error on the below code,please help..

??? y = x + realW*d1 - d2;
|
Error: The expression to the left of the equals sign is not a valid target for
an assignment.

 

[trav1s]

Please define x.

 

[lifelong1985]

 realW = 2.0*cos(2.0*pi*20/2001);
imagW = sin(2.0*pi*20/2001);
y = 0;
d1 = 0.0;
d2 = 0.0;
N=2001;
for n= 1:N
  {
    y  = x(n) + realW*d1 - d2;
    d2 = d1;
    d1 = y;
  }
end 
resultr = 0.5*realW*d1 - d2;
resulti = imagW*d1;

I am getting the following error on the below code,please help..

??? y = x + realW*d1 - d2;
|
Error: The expression to the left of the equals sign is not a valid target for
an assignment.

you did not define what is x in the program

 

[vipinlal]

Sorry for the dumb question guys.. The problem wasnt with the definition of 'x'. I removed the brackets( { } ) after the 'statement' and it worked..