how to calculate and plot rmse matrix

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Fariz Syafiq Mohamad Ali
评论： KSSV 2022-10-2
Hi,im a beginner in matlab. I need to plot for a rmse matrix. i need to calculate the rmse and reshape it into a heatmap (a 8x5 matrix). How do I calculate the rmse of 40 models and one observation? i have listed out my models in the code, and am retrieving it from 'odat' for observation and 'gdat' for the 40 models. i've looked through all the rmse commands but i couldn't really understand, so need some help on it.
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Adam Danz
Adam Danz 2022-9-29
Have you explored rmse, introduced in MATLAB R2022b?
Fariz Syafiq Mohamad Ali
Fariz Syafiq Mohamad Ali 2022-10-2
yes. i've tried using the E = rmse(F,A), but it only gives one value of rmse. How do i make sure i get values for all the models?

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KSSV
KSSV 2022-10-2
编辑：KSSV 2022-10-2
Ran in:
Let O be your observation data array of size mX1 and M be your model data array of size mx40.
O = rand(30,1) ;
M = rand(30,40) ;
RMSE = sqrt(mean((O - M).^2));
RMSE = reshape(RMSE,8,5) ;
pcolor(RMSE)
colorbar
You arrange all your models into an array and get them to the same dimensions of Observations.
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Fariz Syafiq Mohamad Ali
Fariz Syafiq Mohamad Ali 2022-10-2
编辑：Fariz Syafiq Mohamad Ali 2022-10-2
oh sorry, i realised that there's only a total of 28 boxes/models (7x4) when it should be 8x5. an example of what im expecting;
KSSV
KSSV 2022-10-2
Just to show an example I have taken 30....it depends on your data. Hope you problem is solved?

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