Hello all

Maxima is much better when drawing 2D plots of functions with jump
discontinuity.
Sage makes a vertical lines at disontinuities, compare

A=plot(1/(x^2-1),(x,-3,3))
show(A,ymax=10,ymin=-10)

in sage and

plot2d(1/(x^2-1),[x,-3,3],[y,-10,10])

in Maxima. Is it possible to remove these almost vertical lines from
drawings? If I remember, maple has an option discont=true for this.


Btw: I today updated to Sage version 3.2.3 and the command

%maxima
plot2d(1/(x^2-1),[x,-3,3],[y,-10,10])

stopped to work (no new gnuplot window is opened).

Thank you. Robert Marik

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