Matlab - Grafica en matlab

h=msgbox('Selecciona la meta ');

uiwait(h,5);

if ishandle(h) == 1

    delete(h);

end

xlabel('Selecciona la meta con el boton izquierdo del mouse','Color','black');

but=0;

while (but ~= 1) %Repeat until the Left button is not clicked

    [xval,yval,but]=ginput(1);

end

xval=floor(xval);

yval=floor(yval);

plot(xval+.5,yval+.5,'gd');

text(xval+1,yval+.5,'META')

h = axes();

hold on

but = 1;

xlim = h.XLim;

ylim = h.YLim;

colors = ['r', 'g', 'b'];

radios = [0.05, 0.07, 0.10];

while but == 1

    [xval, yval, but] = ginput(1);

    for i = 1:length(colors)

        pos = [xval - radios(i)/2, yval - radios(i)/2, radios(i), radios(i)];

        rectangle('Position', pos, 'Curvature', [1 1], 'EdgeColor', colors(i));

    end

    h.XLim = xlim;

    h.YLim = ylim;

end

hold off