Matlab Question
 

I have data for a 3 dimensional gird in a data file as X Y Z pairs How do I plot this as a 3d mesh?

Are you doing it on a calculator or a computer?

computer, I have a generated datafile of X Y Z pairs

specifically r, theta, f(r,theta) (where f is unknown but found via finite difference methods).

I'd like to plot a mesh that has two independent axis, one for r and one for theta and then a dependent axis for f(r,theta).

here are a couple lines from the datafile

1 0 21.4417
1 0.314159 -102.989
1 0.628319 -217.197
1 0.942478 -310.002

This sounds like a question for the Tilted Computer peeps.
If you are given the function in terms of r and theta, not these sets of data points, I suggest downloading a graphing calculator from Pacific Tech. It is able to create any graph you can think of using.

i dont know about matlab, but i use maple and it tells you how to do this in help.

I'm not given the function, i'm given a dirichlet and neumann boundry condition on a grid and am solving for the interrior points. I'd like to take these points and plot them on a mesh/countur plot ect. Unfortunatlly maple doesn't let me export eps files. I'll keep looking online i'm sure i'll find something soon.

I found a way to do it, I also just realized I posted this in tilted knowledge when I meant to post it in tilted programming ;)

Can you tell us how to do it? Ive been teaching myself matlab, taking a digital signal processing course right now....

Is the way you did it similar to this?
http://geology.asu.edu/glg410/lectures/L34_Matlab5.html

Hm.. Maple 8 does export to EPS. At least on plots. And can produce LaTeX output, which can easily be converted to EPS.

Glad you figured it out anyway.

I used this guide here

http://www.mathworks.com/matlabcentr...bjectType=file

rekna,

have you figured this out yet? i would check out surf and 3dplot, i believe, and be wary of your axes - matlab likes to take them counterintuitively for some 3d plotting functions, as i recall.