ploting roots of polynomials

• Subject: ploting roots of polynomials
• From: Gallego Samy
• Date: Sat, 27 Apr 2013 13:48:50 +0100 (BST)

Hello,

I would like to plot complex roots of polynomials, I have tried this:
------

a:allroots(x^3+3*x^2+x+1,x);
plot2d([['discrete, realpart(a), imagpart(a)]], [x,-5,5]);
------

but maxima is not happy because "allroots" output is of the form [x=...., x=....,x=] and "plot2d" would like a list of complex (without "x="). 

Thanks in advance for your help,

Samy

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