error in creating .coe file

 clear all;
 size = 255;
N = 0 : size;
B = 10;
div = (N-1) ./ (N+1);
c = atanh(div);
filename = 'catanh_coeff.coe';
fid = fopen(filename,'wt');
fprintf(fid,'memory_initialization_radix=10;\n');
fprintf(fid,'memory_initialization_vector=\n');
 i=0:size;
 fprintf(fid,'%d,\n', c(i)); <-------------error
fprintf(fid,'%d;\n', c(size));
fclose(fid);

error : ??? Subscript indices must either be real positive integers or logicals.

Error in ==> atan_coeff at 12 fprintf(fid,'%d,\n', c(i));

Answer 1

[Walter Roberson]

Your line

i=0:size;

sets i to be a vector of values starting with 0. You then try to index by i, but indexing at 0 is not permitted.

I suggest you remove the "i=" line, and change the line after it to

printf(fid,'%d,', c(1:end-1));