How to convert the data from three array: x,y,z into mesh format

Hi, I have three 1D-arrays x,y,z. They have exactly equal length, but the data don't have any analytical expression. In order to plot them in 3D (surface or mesh plot), I need to convert them into mesh format. Typical data set looks as follows-

x y z

1 1 4

1 2 5

1 3 3

2 1 2

2 2 7

2 3 6

How can I convert the x,y and z into mesh format?

Answer 1

[Stephan]

Hi,

if your x-data and y-data is sorted this way you can simply do a transposed reshape :

x = [1 1 1 2 2 2];
y = [1 2 3 1 2 3];
z = [4 5 3 2 7 6];

mesh = reshape(z,3,2)'

gives:

mesh =

       4     5     3
       2     7     6

Best regards

Stephan

Answer 2

[Stephen23]

>> X = [1,1,1,2,2,2];
>> Y = [1,2,3,1,2,3];
>> Z = [4,5,3,2,7,6];
>> uX = unique(X);
>> uY = unique(Y);
>> S = [numel(uY),numel(uX)]; % or swap, depending on what order you want.
>> Xm = reshape(X,S)
Xm =
   1   2
   1   2
   1   2
>> Ym = reshape(Y,S)
Ym =
   1   1
   2   2
   3   3
>> Zm = reshape(Z,S)
Zm =
   4   2
   5   7
   3   6