3D plot of a matrix

267 Ansichten (letzte 30 Tage)
Anshuman S
Anshuman S am 1 Jun. 2018
Beantwortet: Aakash Deep am 1 Jun. 2018
I have constructed a 2D matrix A for Temperature as a function of position ( 1 dimensional ) & time, I want to plot a surface for Temperature( z -axis ) with x & y being position and time .
e.g : A = [ 200 300 400 500; 400 500 800 1000; 1200 1500 1600 2000] . 3 rows = 3 time steps (1 sec,2 sec, 3sec) , 4 cols = 4 position. here we have 4 points, where the temp. for the 1st point is 200 at (t=1), 400 at (t=2) , 1200 at (t=3).
I want a surface plot for the values of temperature, which is saved in the matrix. Thanks

Antworten (3)

KSSV
KSSV am 1 Jun. 2018
A = [ 200 300 400 500; 400 500 800 1000; 1200 1500 1600 2000] ;
t = [1 2 3] ;
pos = [100 200 400 1200] ;
pcolor(t,pos,A')
  4 Kommentare
Anshuman S
Anshuman S am 1 Jun. 2018
The surface created using surf (t,pos,A) looks very dark . How to get color contrast in it ?
KSSV
KSSV am 1 Jun. 2018
shading interp
after the plot.

Melden Sie sich an, um zu kommentieren.


Paridhi Yadav
Paridhi Yadav am 1 Jun. 2018
Bearbeitet: Paridhi Yadav am 1 Jun. 2018
You can do it like this, since you have not given position I have assumed (1, 2, 3, 4) to be the position.
A = [ 200 300 400 500; 400 500 800 1000; 1200 1500 1600 2000]
p = [1 2 3 4] ;
t = [1 2 3] ;
surface(p,t,A)

Aakash Deep
Aakash Deep am 1 Jun. 2018
Hello Anshuman,
You can just use the surf command for this. It will take care of your axis and color contrast itself.
A = [ 200 300 400 500; 400 500 800 1000; 1200 1500 1600 2000] ;
surf(A)
In this case, as the matrix is of dimension 3x4 only, so the plot will also have it's x-axis and y-axis with scale 3 and 4 but when you will create your vector of 10,000 timestamps, so I am supposing that your matrix will also have some similar dimension. So, it will do it by itself.

Community Treasure Hunt

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

Start Hunting!

Translated by