Subscript indices must either be real positive integers or logicals.

I have problem running this loop. The error is : Subscript indices must either be real positive integers or logicals.. Please, if you can help, please do! I just start learning matlab loops!

for i=1:length(xy_pairs)
x=xy_pairs(i,1);
y=xy_pairs(i,2);
count=phsp_array(x,y);
phsp_array=count+1;
end

Answer 1

[Image Analyst]

x and y are probably zero, negative integers, or not positive integers. See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_fix_the_error_.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22.3F

Answer 2

[sunil sharma]

c7=4.*g3(y).*sin(ld)./((2.*(ld.^4).*g1+k0.*re.*ph./l+(v0.*f1.*ph.*(ld.^2)./(h.*h0)))); % cn=4*g3*sin(ld)./(ld.^4)*(2+k0*re) pre=st.*bt.*c7;

I am getting the following results. Subscript indices must either be real positive integers or logicals.

Error in Magneticfield (line 33) c7=4.*g3(y).*sin(ld)./((2.*(ld.^4).*g1+k0.*re.*ph./l+(v0.*f1.*ph.*(ld.^2)./(h.*h0))));

Please help me.