2D PostProcessing plot in MATLAB

I want to plot my thermal analysis results on a 2D mesh. I have a 2xN matrix named "coord", which basically has the X and Y coordinates of the nodes of my mesh. At each node, I have a temperature value which is saved as a 1xN matrix. How do I plot a heatmap or a contour plot for my results? I've tried Surf fucntion, which expects a matrix of minimum size 2x2.. Where as my temperatures are saved as "nodeDisp" which is a 1xN vector leading to "Error using surf (line 71) Z must be a matrix, not a scalar or vector." I tried scatteredInterpolant, with which I could plot my mesh but no signs of the colored plot of displacements I wanted.

Answer 1

[Venkata Siva Krishna Madala]

Hello Pranay,

Its better if you convert the coord to a Nx2 matrix and temperature values to a Nx1 matrix by transposing it. Then you can use the surf command as given below

surf(coord(:,1),coord(:,2),temperature_values)

This should remove the surf plot error and generate the plot as you need.

Regards,

Krishna Madala

[Pranay Suhas Chinthapandu]

Hello Krishna,

Temperature values are still a vector, irrespective of the fact that its a column or a row vector. I have the same error. I have tried scatteredInterpolant, fill3, mesh and everything, and the problem still pertains. I have attached a picture of what exactly I desire and following are the details of my data: 'coord' is a 2xN matrix where coord(1,:) is X coordinates and coord(2,:) is the Y coordinate at which the respective temperature value is nodeDisp(1,:). How do I build a correlation between these values and generate an interpolated graphical result as in the picture?