CODEWITHSUNDEEP
matlabplotmesh
D_Wills
D_Wills

Reputation: 355

Inconsistent dimension error when plotting mesh in Matlab

I'm new to Matlab and I want to plot a mesh. My coordinates are:

x = [30 34 38 40 44 48 50]

y = [1:5:20]

Z = [9.1 8.5 7.83 7.54 7.07 6.61 6.49 ; 
     14.5 8.96 8.21 7.71 7.07 6.61 6.4;
     13.37 13.4 10.2 9.4 9 7.3 7.9;
     12.09 12 12.14 11.96 13.58 14.12 14.311;
     14.97 10.77 11.87 12.4 13.62 14.19 14.94]

Ehen I tried to plot it in Matlab it gives following error:

Data point coordinates have inconsistent dimension.

Upvotes: 2

Views: 891

Answers (2)

Robert Seifert
Robert Seifert

Reputation: 25232

You have indeed inconsistent dimensions as you need 5 elements in y. Also you need a matrix Z, not a vector.

The following should get you starting:

y = [0:5:20]

%// reshape z in case z is a vector
z = reshape(Z,numel(y),numel(x))

figure(1)
%// mesh(x,y,z)
surf(x,y,z) % colored mesh

enter image description here

Check the data sizes and adjust the reshaping according to your needs!

Upvotes: 2

seralouk
seralouk

Reputation: 33147

In general, if X and Y are vectors, length(X) = n and length(Y) = m, where `[m,n] = size(Z)v.

In your case:

length(x)
7

length(y)
4

but

size(Z)

1    35

So you need to reshape the Z.

Do:

 x = [30 34 38 40 44 48 50]
 y = [0:5:20]
 Z = [9.1 8.5 7.83 7.54 7.07 6.61 6.49 ; 14.5 8.96 8.21 7.71 7.07 6.61 6.4; 13.37 13.4 10.2 9.4 9 7.3 7.9; 12.09 12 12.14 11.96 13.58 14.12 14.311; 14.97 10.77 11.87 12.4 13.62 14.19 14.94]
 Z = reshape(Z,numel(y),numel(x))
 mesh(x,y,Z)

Upvotes: 2

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