Numbered Patches

Hello all,

The matlab documentation for patch shows an example where the patch faces and vertices are numbered.

http://www.mathworks.com/help/techdoc/ref/patch.html

Is it possible to automatically generate a numbered plot like this or is numbering only possible by annotating?

Thanks cjm2176

Answer 1

[Matt Fig]

It could be automated, something like:

xdata = [2 2 0 2 5;
         2 8 2 4 5;
         8 8 2 4 8];
ydata = [4 4 4 2 0;
         8 4 6 2 2;
         4 0 4 0 0];
zdata = zeros(3,5);

patch(xdata,ydata,zdata,'w')

mnx = sum(xdata)./size(xdata,1); % Or MEAN...
mny = sum(ydata)./size(ydata,1);

for ii = 1:numel(mnx)
   T(ii) = text(mnx(ii),mny(ii),num2str(ii));  
end

set(T,'color','b','fonts',12,'fontweight','bold')

The code after the patch creation could be put into a function M-file which takes the patch object's handle as an arg. Then from there extracts the vertices and does it's job. Of course it should go without saying that this approach will not work for certain patch shapes...

[Walter Roberson]

And to answer the original question more explicitly: there is no (documented) Mathworks supplied routine or plotting option that does this on your behalf.