Man Scilab

fchamp
Scilab Function

fchamp - direction field of a 2D first order ODE

Calling Sequence

fchamp(f,t,xr,yr,[arfact,rect,strf])
fchamp(f,t,xr,yr,<opt_args>)

Parameters

Description

fchamp is used to draw the direction field of a 2D first order ODE defined by the external function f . Note that if the ODE is autonomous, argument t is useless, but it must be given.

Enter the command fchamp() to see a demo.

Examples


deff("[xdot] = derpol(t,x)",..
        ["xd1 = x(2)";..
         "xd2 = -x(1) + (1 - x(1)**2)*x(2)";..
         "xdot = [ xd1 ; xd2 ]"])
xf= -1:0.1:1;
yf= -1:0.1:1;
fchamp(derpol,0,xf,yf)
clf()
fchamp(derpol,0,xf,yf,1,[-2,-2,2,2],"011")
 
  

See Also

champ ,   champ1 ,  

Author

J.Ph.C.

Back