Thread Subject: Mesh or Surface plot

I am new to mesh and/or surface plot in MATLAB. I have generated data in the format
[ x y z] where z=z(x,y). For example the data file looks like

0 1 0.2
0 2 0.25
1 1 0.21
1 2 0.31
2 1 0.3
2 2 0.41
etc.....

How do I plot this data? If I use plot3 it is connecting all the points. How can I do a mesh or surface plot? I tried doing the following: Result=[x y z] where Result is a matrix and then used mesh(Result). It plotted something but I don't see the actual values of x,y,z points on the axes. I want to see the range of x,y, and z on the axes. What is the best way to do that?
Any help will be greatly appreciated.

"King" <majumdak@gvsu.edu> wrote in message <gvbcvp$24$1@fred.mathworks.com>...
> I am new to mesh and/or surface plot in MATLAB. I have generated data in the format
> [ x y z] where z=z(x,y). For example the data file looks like
>
> 0 1 0.2
> 0 2 0.25
> 1 1 0.21
> 1 2 0.31
> 2 1 0.3
> 2 2 0.41
> etc.....
>
> How do I plot this data? If I use plot3 it is connecting all the points. How can I do a mesh or surface plot? I tried doing the following: Result=[x y z] where Result is a matrix and then used mesh(Result). It plotted something but I don't see the actual values of x,y,z points on the axes. I want to see the range of x,y, and z on the axes. What is the best way to do that?
> Any help will be greatly appreciated.

Take a look at TRIMESH, TRISURF, DELAUNAY

Bruno

"King" <majumdak@gvsu.edu> wrote in message <gvbcvp$24$1@fred.mathworks.com>...
> I am new to mesh and/or surface plot in MATLAB. I have generated data in the format
> [ x y z] where z=z(x,y). For example the data file looks like
>
> 0 1 0.2
> 0 2 0.25
> 1 1 0.21
> 1 2 0.31
> 2 1 0.3
> 2 2 0.41
> etc.....
>
> How do I plot this data? If I use plot3 it is connecting all the points. How can I do a mesh or surface plot? I tried doing the following: Result=[x y z] where Result is a matrix and then used mesh(Result). It plotted something but I don't see the actual values of x,y,z points on the axes. I want to see the range of x,y, and z on the axes. What is the best way to do that?
> Any help will be greatly appreciated.

gridfit, from the FEX will help here.

http://www.mathworks.com/matlabcentral/fileexchange/8998

John

"King" <majumdak@gvsu.edu> wrote in message <gvbcvp$24$1@fred.mathworks.com>...
> I am new to mesh and/or surface plot in MATLAB. I have generated data in the format
> [ x y z] where z=z(x,y). For example the data file looks like
>
> 0 1 0.2
> 0 2 0.25
> 1 1 0.21
> 1 2 0.31
> 2 1 0.3
> 2 2 0.41
> etc.....
>
> How do I plot this data? If I use plot3 it is connecting all the points. How can I do a mesh or surface plot? I tried doing the following: Result=[x y z] where Result is a matrix and then used mesh(Result). It plotted something but I don't see the actual values of x,y,z points on the axes. I want to see the range of x,y, and z on the axes. What is the best way to do that?
> Any help will be greatly appreciated.


http://www.mathworks.com/matlabcentral/fileexchange/23447

http://giaccariluigi.altervista.org/blog/