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fcontour(2) Scilab Function fcontour(2)
NAME
fcontour - level curves
CALLING SEQUENCE
fcontour(xr,yr,f,nz,[theta,alpha,caption,flag,bbox,zlev])
fcontour2d(x,y,z,nz,[style,strf,leg,rect,nax])
PARAMETERS
xr,yr : two real vectors of size respectively (1,n1) and (1,n2).
f : is an external which gives the analytic expression of the sur-
face. z=f(x,y) is first computed on the grid specified by xr.yr.
Then, control is passed to the routine contour.
nz : specifies the level values or number.
- If nz is of size 1, its value considered as an integer gives
the number of level curves equally spaced from zmin to zmax.
- If nz is a vector, nz(j) gives the value of the jth level
curve.
[rest] : for theta,alpha,caption, bbox see plot3d
flag : real vector of size 3 ; flag=[mode,type,box]; flag(2) and
flag(3) are the same as in plot3d; flag(1) has the following
meaning :
flag(1)=0 : the level curves are drawn on the surface
defined by (x,y,z)
flag(1)=1 : the level curves are drawn on a 3D plot and on
the plan defined by equation z=zlev
flag(1)=2 : The level curves are drawn on a 2D plot.
DESCRIPTION
Draws the level curves of a surface z=f(x,y). The level curves can be drawn
on a 3D surface or on 2D plot. For level curves on a 2d plot, the function
fcontour2d should be preferred to the function fcontour since it accepts
standard 2d parameters [style,strf,leg,rect,nax]. fcontour and fcontour2d
call respectively contour and contour2d Enter the command fcontour() or
fcontour2d to see a demo.
SEE ALSO
contour, contour2d
AUTHOR
J.Ph.C..
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