I get an error for rxy[D]=0. I do not know why. Im doing a code for correlation.

double x[100];
double y[100];
double rxy[100];

for  D = 0:1:100
     rxy [D]= 0
       for n=0:1:99
        rxy [D] = rxy[D]+x[n]*y[n-D]
       end

[Stephen23]

This is not MATLAB code.

MATLAB does not use square brackets for indexing and is a dynamically typed language so does not use variable declarations. MATLAB also uses mathematical indexing (starting from one, not zero).

All of these things are covered quite well in every course for MATLAB beginners.

If you write code for another language and try to run it in MATLAB then your should expect errors. These tutorials are a good place to learn MATLAB:

http://www.mathworks.com/help/matlab/getting-started-with-matlab.html

[Walter Roberson]

The variable declarations won't actually give an error, they just don't do anything close to declaring a variable.

Answer 1

[Walter Roberson]

Matlab does not use square brackets for indexing..

Also indexing starts from 1