How to graphing a 3D surface when the X,Y,Z are known

3 visualizaciones (últimos 30 días)
Steve
Steve el 30 de Nov. de 2012
I have an experiment where I have time (t) and temperature (T) as the variables and yield (Y) as the result. I have 3 times and 3 temperatures (t=[5,10,15] T=[30,40,50]) These are combined in 9 combinations so in (t,T) they would be (5,30), (10,30), (15,30), (10,30) etc... each of those combinations has produced a yield (Y), say (6,7,4,2,..etc). So I have all the values for (t,T,Y). Id like to plot these data points and get a 3D surface.
Should I plug all that into one matrix such as M=[5,30,6;10,30,7;15,30,4;...etc] so that each column represents an axis
Or should they all be separate like t=[5,10,15,10,15,5,15,5,10] T=[30,40,50,30,40,50,30,40,50] Y=[6,7,4,2,3,8,9,1,3] so that they are all in respect to each other
Or neither? What is the best way to go about this? Thank you

Respuestas (2)

owr
owr el 30 de Nov. de 2012
I typically use 3 2-dimensional matrices - one for each coordinate (t,T,Y) - each position corresponds to a combination of a t and T value, and of course the corresponding Y value.
Check out the documentation for "surf" for some examples The function "meshgrid" is also helpful for generating the matrices for t and T from the original vectors you specify.

Azzi Abdelmalek
Azzi Abdelmalek el 30 de Nov. de 2012
t=[5,10,15]
T=[30,40,50]
[tt,TT]=meshgrid(t,T);
y=sin(tt).*cos(2*TT);
mesh(tt,TT,y)

Categorías

Más información sobre Surface and Mesh Plots en Help Center y File Exchange.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by