suivant: Curve defined in polar
monter: Parametric curves and surfaces
précédent: 2D parametric curve
Table des matières
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3D parametric surface : plotparam paramplot DrawParm
plotparam takes two main arguments,
a list of three
expressions of two variables and the list of these variable names
where each variable name may be replaced by variable=interval
to specify the range of the parameters.
It accepts an optionnal argument to specify
the discretisation steps of the parameters u and v with
ustep=... and vstep=....
plotparam([f(u,v),g(u,v),h(u,v)],[u,v]) draws the surface defined by the
first argument :
x = f (u, v), y = g(u, v), z = h(u, v), where u and v
ranges default to the graphic configuration.
Input :
plotparam([v*cos(u),v*sin(u),v],[u,v])
Output :
The cone
x = v*cos(u), y = v*sin(u), z = v
To specify the range of each parameters, replace each variable
by an equation variable=range, like this:
plotparam([v*cos(u),v*sin(u),v],[u=0..pi,v=0..3])
Output :
A portion of the cone
x = v*cos(u), y = v*sin(u), z = v
Input :
plotparam([v*cos(u),v*sin(u),v],[u=0..pi,v=0..3],ustep=0.5,vstep=0.5)
Output :
A portion of the cone
x = v*cos(u), y = v*sin(u), z = v
suivant: Curve defined in polar
monter: Parametric curves and surfaces
précédent: 2D parametric curve
Table des matières
Index
giac documentation written by Renée De Graeve and Bernard Parisse