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plot3d1 Scilab Group Scilab Function plot3d1
NAME
plot3d1 - 3D gray or color level plot of a surface
DESCRIPTION
plot3d1(x,y,z,[theta,alpha,leg,flag,ebox])
plot3d1(xf,yf,zf,[theta,alpha,leg,flag,ebox])
PARAMETERS
See plot3d for a full description. There is just a slight difference,
only the sign of the flag(1)=mode parameter is used: if it is negative
the grid is not drawn.
DESCRIPTION
plot3d plots a surface z=f(x,y) with colors depending on the z-level of
the surface. Enter the command plot3d1() to see a demo.
EXAMPLE
// simple plot using z=f(x,y)
t=[0:0.3:2*%pi]'; z=sin(t)*cos(t');
plot3d1(t,t,z)
// same plot using facets computed by genfac3d
[xx,yy,zz]=genfac3d(t,t,z);
xbasc()
plot3d1(xx,yy,zz)
// multiple plots
xbasc()
plot3d1([xx xx],[yy yy],[zz 4+zz])
// simple plot with viewpoint and captions
xbasc()
plot3d1(1:10,1:20,10*rand(10,20),35,45,"X@Y@Z",[2,2,3])
// same plot without grid
xbasc()
plot3d1(1:10,1:20,10*rand(10,20),35,45,"X@Y@Z",[-2,2,3])
// plot of a sphere using facets computed by eval3dp
deff("[x,y,z]=sph(alp,tet)",["x=r*cos(alp).*cos(tet)+orig(1)*ones(tet)";..
"y=r*cos(alp).*sin(tet)+orig(2)*ones(tet)";..
"z=r*sin(alp)+orig(3)*ones(tet)"]);
r=1; orig=[0 0 0];
[xx,yy,zz]=eval3dp(sph,linspace(-%pi/2,%pi/2,40),linspace(0,%pi*2,20));
xbasc()
plot3d1(xx,yy,zz)
SEE ALSO
plot3d
AUTHOR
J.Ph.C.
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