请教：如何移动空间云图的位置？多谢！
利用函数surf(cx, cy,cz)画了一个空间的曲面，之后用contourf(cx,cy, cz)画了一个空间云图。但是，这个云图的位置是在xy平面内（z=0），现在想移动这个云图的位置到z=zo，如何实现？多谢！ 可以通过调整等高线句柄来实现。如果你有权限看simwe的帖子，这有更详细的讨论http://forum.simwe.com/thread-885324-1-1.html 本帖最后由 kanhlbai 于 2011-4-11 22:37 编辑谢谢，但是看不了哦。 messenger 发表于 2011-4-11 22:34 static/image/common/back.gif
可以通过调整等高线句柄来实现。如果你有权限看simwe的帖子，这有更详细的讨论http://forum.simwe.com/thre ...
麻烦给解释一下吧，谢谢！ 望高手给解答一下，多谢！ 请高手帮忙阿
在simwe两位高人的方式, 本想直接贴过来, 但觉得应本人...
就大略描述下
1.bainhome採用修改原*.m的方式
2.rocwoods採用修改句柄的'zdata'属性
本想用axes控制, 但无对应三维的
又想到放大surf(cx,cy,cz)中的cz骗过再hold on, 函数用法模糊记错了, 行不通
当然开始help各关键词, 看看有无现成方便的, 真一时没找到适当的
最终想到跳过contourf的思维直接使用slice, 不知可否
但个人不很熟slice, 练了一下
= peaks(30); surf(X,Y,Z); hold on;
X2=repmat(X,); Y2=repmat(Y,); V2=repmat(Z,);
Z2=repmat(0*X,); Z2(:,:,1)=-40*ones(size(X));
hs=slice(X2,Y2,Z2,V2,[],[],-30); set(hs,'FaceColor','interp','EdgeColor','none') ChaChing 发表于 2011-4-12 14:28 static/image/common/back.gif
在simwe两位高人的方式, 本想直接贴过来, 但觉得应本人...
就大略描述下
1.bainhome採用修改原*.m的方式
...
多谢ChaChing，前面两个高人的帖子我已经搜索到并弄明白了，他们的方法在contour3, surfc里面都可以的，但是似乎不适用于contourf函数，因为我 edit contourf 之后，没有找到有关z位置的语句，估计在contourf里面云图的位置都是缺省在z=0？
我也想是不是应该用slice，刚才都在看帮助，不过还是一头雾水。ChaChing真是及时雨啊，谢谢！ 不好意思，又不理解 repmat 的用法了；还有，我需要在云图上加contour，即等值线？谢谢！ 这个问题还没有琢磨明白，请大家继续指点！多谢！ 本帖最后由 ChaChing 于 2011-4-13 00:11 编辑
官网找到一个可能符合(我还没空细看并试), LZ先试试看, 结果再分享!
Make a contour plot in the xy-plane at a specific height
http://www.mathworks.com/matlabcentral/fileexchange/3500-contourz
function = contour(varargin)
%CONTOURZ Contour plot.
% CONTOURZ(Z) is a contour plot of matrix Z treating the values in Z
% as heights above a plane.A contour plot are the level curves
% of Z for some values V.The values V are chosen automatically.
% CONTOURZ(X,Y,Z) X and Y specify the (x,y) coordinates of the
% surface as for SURF.
% CONTOURZ(Z,N) and CONTOURZ(X,Y,Z,N) draw N contour lines,
% overriding the automatic value.
% CONTOURZ(Z,V) and CONTOURZ(X,Y,Z,V) draw LENGTH(V) contour lines
% at the values specified in vector V.Use CONTOURZ(Z,) or
% CONTOURZ(X,Y,Z,) to compute a single contour at the level v.
% Use CONTOURZ(X,Y,Z,,height) to draw at the z value 'height'.
% = CONTOURZ(...) returns contour matrix C as described in
% CONTOURC and a column vector H of handles to LINE or PATCH
% objects, one handle per line.Both of these can be used as
% input to CLABEL. The UserData property of each object contains the
% height value for each contour.
%
% The contours are normally colored based on the current colormap
% and are drawn as PATCH objects. You can override this behavior
% with the syntax CONTOURZ(...,'LINESPEC') to draw the contours as
% LINE objects with the color and linetype specified.
%
% Uses code by R. Pawlowicz to handle parametric surfaces and
% inline contour labels.
%
% Example:
% =meshgrid(-4:0.2:4,-4:0.2:4);
% z=sin(sqrt(x.^2+y.^2)).^2;
% surfl(x,y,z);
% hold on;
% contourz(x,y,z,'',-2);
% contourz(x,y,z,,3);
% hold off;
%
%
% See also CONTOUR, CONTOUR3, CONTOURF, CLABEL, COLORBAR.
% Additional details:
%
% CONTOURZ uses CONTOUR3 to do most of the contouring.Unless
% a linestyle is specified, CONTOUR will draw PATCH objects
% with edge color taken from the current colormap.When a linestyle
% is specified, LINE objects are drawn. To produce the same results
% as MATLAB 4.2c, use CONTOUR(...,'-').
%
% Thanks to R. Pawlowicz (IOS) rich@ios.bc.ca for 'contours.m' and
% 'clabel.m/inline_labels' so that contour now works with parametric
% surfaces and inline contour labels.
% Copyright 1984-2001 The MathWorks, Inc.
% $Revision: 5.17 $$Date: 2001/04/15 12:03:50 $
error(nargchk(1,5,nargin));
nin = nargin;
if isstr(varargin{end})
nin = nin - 1;
end
if nin <= 2,
= size(varargin{1});
lims = ;
else
lims = [min(varargin{1}(:)),max(varargin{1}(:)), ...
min(varargin{2}(:)),max(varargin{2}(:))];
end
if nin>4
height=varargin{end};
varargin=varargin(1:end-1);
if isempty(varargin{end}) varargin=varargin(1:end-1);end
end
= contour3(varargin{:});
if ~isempty(msg), error(msg); end
if exist('height')
for i = 1:length(h)
zd=get(h(i),'zdata');
zd(~isnan(zd))=height;
set(h(i),'Zdata',zd);
end
else
for i = 1:length(h)
set(h(i),'Zdata',[]);
end
end
if ~ishold
view(2);
set(gca,'box','on');
grid off
end
if nargout > 0
cout = c;
hand = h;
end ChaChing 发表于 2011-4-13 00:09 static/image/common/back.gif
官网找到一个可能符合(我还没空细看并试), LZ先试试看, 结果再分享!
Make a contour plot in the xy-plane ...
感谢，这个程序和前面提到的两个高手的思路是一样的，能够把等值线在z方向移动，但是还是不能移动contourf命令生成的云图。头疼还得再继续看看怎么办。 继续努力之中!!!
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