3. Wind streamline([ ] [ ] [ ])
load wind zmax = max(z(:)); zmin = min(z(:)); streamslice(x,y,z,u,v,w,... [],[],(zmax-zmin)/2) 4. [sx,sy,sz] [sx,sy,sz] = meshgrid(80,20:10:50,0:5:15); plot3(sx(:),sy(:),sz(:),’*r’); axis(volumebounds(x,y,z,u,v,w)) grid on; box on; daspect([2 2 1]) streamline(x,y,z,u,v,w,... sx(:),sy(:),sz(:)) (Coneplot) (Sreamribbons) Matlab/Valume Visualization
>>ezplot(’cos(x)’) % -2*pi<x<2*pi cos(x) >>ezplot(’cos(x)’, [0, pi]) % 0<x<pi cos(x) >>ezplot(’x^2 + y^2 - 1’,[-1.2,1.2]); % ,-1.2<x<1.2 >>ezplot(’sin(t)’,’cos(t)’) % -2*pi<t<2*pi
>>f = @(x)cos(x)+2*sin(x); >>ezplot(f) % , , plot(Z) plot(real(Z),
% f
f
imag(Z)) >> t = 0 : pi/10 : 2*pi; >> plot(exp(i*t), ′ - o′) 20 ,
3.
3.1 -
3.2 plot(x,y,z,s) x,y,z 3.3 sphere(N) 1 N s
cylinder(R,N) R ellipsoid(XC,YC,ZC,XR,YR,ZR,N)
N
(X − XC )2 (Y − Y C )2 (Z − ZC )2 + + =1 XR2 Y R2 ZR2 3.4 (x, y ), x, y , ,Y MATLAB (x,y) z, • • • mushz( mush mushz surfc graf3d,graf2d subplot(1,3,1), % t = 0 : 0.01 : 15; x = sin(t); plot3(x, y, z, ’-.’) view(-60, 18) % subplot(1,3,2) sphere(40); % :mush( ),surf( mushc surf ),mushc( ),surfc( ), ) x, y X meshgrid Z :meshgrid Y, X Y , ,X
x - yБайду номын сангаас
x
x y
graf2d >> fplot(’sin(1/x)’,[0.01 0.1],1e-3) sin(1/x) [0.01 0.1] 10−3
ezcontour, ezcontourf, ezmesh, ezmeshc, ezplot3, ezpolar, ezsurf, ezsurfc
5.
5.1 M=moviein(n) M(:, j)=getframe movie(M,k,FPS) 5.2 M n n k n M ,
FPS
MATLAB normal none xor background
′
EraseMode′
′
EraseMode′
drawnow
1. contour contour2 contourf peaks MATLAB
(Streamtubes
Demos
>> z = peaks; >> contour3(peaks)
>> z = peaks; >> [c,h] = contourf(z); >> clabel(c,h), colorbar
2.
[x y z v] = flow; % p = patch(isosurface(x, y, z, v, -3)); % isonormals(x,y,z,v, p) % set(p, ’FaceColor’, ’red’, ’EdgeColor’, ’none’); % daspect([1 1 1]) % view(3) % axis tight; grid on % camlight; lighting phong % alpha(.5) %
MATLAB
: ...... : ...... : : ...... fig,bmp,eps,jpg,tif
1.
1.1 figure figure(n) close figure(n) subplot(m,n,p) MATLAB n n m× n , p
hold on hold off
1.2
2.
plot bar compass contour errobar ezplot feather fplot fill hist comet loglog pcolor polar quiver rose semilogx semilogy stem stairs
y = cos(t);
z = t;
subplot(1,3,3) [X,Y]=meshgrid(-8:0.5:8); R = sqrt(X.^2 + Y.^2)+eps; surf(X,Y,Z)
Z =sin(R)./R;
% % %
4.
, v = xe−x slice [x,y,z] = meshgrid(-2:.2:2); v = x .* exp(-x.2 - y.2 - z.2); slice(v,[5 15],15,10) axis([0 21 0 21 0 21]); hold on colorbar(′horiz′) colorbar(′vert′) view([-25 65]) u2 >> u=cplxgrid(20); >>cplxmap(u,u.^2) >>colorbar(’vert’)
2 −y 2 −z 2
,
slice
x = 5x = 15y = 15z = 10.
u1 / 2 >>u=cplxgrid(20); >>cplxroot(2) >>colorbar(’vert’)
cplxgrid(m) cplxmap(u,f(u)) cplxroot(n)
(m + 1) × (2m + 1) n
