Re: Problems plotting the polygon of n-th complex roots

[Tobal]

Ok, I've used patch and more commands and the code is this:

clf();
hold on; axis equal; 
axis ([-1.5, 1.5,-1.5,1.5], 'square');
grid;
n=11;
for k=0:10
        x(k+1)=cos(((2*k+1)*pi)/n);
        y(k+1)=sin(((2*k+1)*pi)/n);
        if(x(k+1)>0 && y(k+1)>0 || x(k+1)>0 && y(k+1)<0 )
                drawLabels(x(k+1)+0.1,y(k+1),['w_' num2str(k)])
        else
                drawLabels(x(k+1)-0.25,y(k+1),['w_' num2str(k)])
        end
end

p1 = [1 0];
p2 = [0 1];
p3 = [-1 0];
origin = [0 0];

circle = createCircle(p1, p2,p3);

drawCircle (circle,'r','LineWidth',2);
patch(x,y,'w','EdgeColor','b','Marker','o','MarkerFaceColor','flat','MarkerSize',8,'LineWidth',2)
for k=0:10
        edge = [0 0 x(k+1) y(k+1)];     
        drawEdge(edge, 'linewidth', 1.15,'color','b');
end
title('Raices onceavas de la unidad');


An image

<http://octave.1599824.n4.nabble.com/file/n4658717/OctaveRaizUnidad.png> 

Please, is there somebody know how to put correct labels w2, w3 , w10 ?

Thanks



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