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artest(1) Scilab Function artest(1)
NAME
artest - arnold dynamical system
CALLING SEQUENCE
artest(f_l,[odem,xdim,npts])
arnold(t,x)
iarf([a])
PARAMETERS
f_l : can be "arnold" or arnold. It is the name of the external for the
arnold system. If f_l is set to "arnold" a Fortran coded version of
the arnold system where a(1:6)=1 will be used and if f_l is set to
arnold a Scilab coded version will be used . arnold is a Scilab macro
coding the Arnold system. This macro is loaded when calling artest.
iarf : is used to fix the values of a in the Scilab coded case. a is a vec-
tor of size 6.
odem,xdim,npts
: are optional arguments. Their meaning and syntax can be found in the
portr3d help
DESCRIPTION
A call to the function artest() will interactively display a phase portrait
of a the following dynamical system :
ydot(1)=a(1)*cos(y(2)) +a(2)*sin(y(3))
ydot(2)=a(3)*cos(y(3)) +a(4)*sin(y(1))
ydot(3)=a(5)*cos(y(1)) +a(6)*sin(y(2))
SEE ALSO
portr3d, ode, chaintest, lotest
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