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contourf Scilab Group Scilab Function contourf
NAME
contourf - filled level curves of a surface on a 2D plot
CALLING SEQUENCE
contourf(x,y,z,nz,[style,strf,leg,rect,nax])
PARAMETERS
x,y : two real row vectors of size n1 and n2: the grid.
z : real matrix of size (n1,n2), the values of the function.
nz : the level values or the number of levels.
- If nz is an integer, its value gives the number of level curves
equally spaced from zmin to zmax as follows:
z= zmin + (1:nz)*(zmax-zmin)/(nz+1)
Note that the zmin and zmax levels are not drawn (generically
they are reduced to points) but they can be added with
[im,jm] = find(z == zmin); // or zmax
plot2d(x(im)',y(jm)',-9,"000")
- If nz is a vector, nz(i) gives the value of the ith level curve.
style,strf,leg,rect,nax
: see plot2d. The argument style gives the dash styles or colors which
are to be used for level curves. It must have the same size as the
number of levels.
DESCRIPTION
contourf paints surface between two consecutives level curves of a
surface z=f(x,y) on a 2D plot. The values of f(x,y) are given by the
matrix z at the grid points defined by x and y. You can change the
format of the floating point number printed on the levels by using
xset("fpf",string) where string gives the format in C format syntax (for
example string="%.3f"). Use string="" to switch back to default format.
Enter the command contour2d() to see a demo.
EXAMPLE
contourf(1:10,1:10,rand(10,10),5,1:5,"011"," ",[0,0,11,11])
SEE ALSO
contour, fcontour, fcontour2d, contour2di, plot2d, xset
AUTHOR
J.Ph.C.
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