Trying to find the RMSE between two (925 902) grids of elevation data points

Trying to find the root mean square error values for the differences between two grids, matrix A is the original 925x902 matrix and matrix B is the simulated one.

I also would like to display the results of the RMSE over the top of the original matrix A grid.

How would i go about this?

Answer 1

[Avadhoot]

Hi Todd,

You can find the RMSE between two matrices either row-wise or column wise. I assume that you need the column wise RMSE values. You could do that by using the following command:

rmseCol = rmse(A,B) 

You could also find the row wise RMSE values by using:

rmseRow = rmse(A,B,2) 

After that you could append the original matrix A after the RMSECol vector to get the desired effect of getting the RMSE values above the original matrix A. You can do it as follows:

RMSE_A = [rmseCol ; A] 

You can find more information about the rmse function and its uses here: Root-mean-square error between arrays - MATLAB rmse - MathWorks India

Hope this helps.

Regards,

Avadhoot.