MATLAB: How to convert this formula to matlab language

matlab function

Hi guys,

I would like to convert this formula to matlab language.

α = arctan(y − 1/3, x − 1/3) modulus 2π

I tried a=atan2(y-1/3,x-1/3)*mod(2pi) but mod function needs more variables

Thank you

a = mod(atan2(y-1/3,x-1/3), 2*pi)

If n is smaller than 1, the loop will not execute, hence er will never get created. Either assign a default value to er before the loop e.g.

er = nan;
for ...

or, if matlab coder supports it (I don't have it so don't know), issue an error before the loop if n is not valid:

if n < 1 
   error('nombre de termes doit etre au moins 1');
end
for ...

x = linspace(-2*pi,2*pi,1000);
y = (mod(x+pi,2*pi)-pi).^3;
plot(x,y)