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

error message

What should I do if this error message pops up?

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

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In the fellowing expression you missed * x0*(z, instead of x0(z

c1=(v0+x0*(z*n+n*sqrt(z.^2-1)))/(2*n*sqrt(z.^2-1));

You have also, to replace some multiplication by multiplication element/element

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

I think you have theta and asin reversed in the first for-loop

theta(..) = asin(..)

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

I think it's pretty well explained in 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, don't you?

In your case, you almost certainly have an array called mean(). You're intending to use the function mean, but you blew it away by creating an array called mean and it's thinking H is supposed to be the index(es) of that array, which of course it's not. Try this

which -all mean

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

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

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