How to calculate Percentage wise confusion matrix for each class??

I have tried the following command to calculate the confusion matrix

    C = confusionmat(testinglabels,predictedLabels)
It gave me the result as shown in the attachment 
I want to calculate percentage wise confusion matrix for each class 
Please help me

Answer 1

[Abhipsa]

Hi @saeeda saher,

When using “confusionmat”, the output is given in terms of the number of instances. To express the results as percentages, you can normalize the confusion matrix.

% Normalize the confusion matrix to get percentages
rowSums = sum(C, 2); % Sum of each row
percentageC = (C ./ rowSums) * 100  %this is the result in percentage

Additionally, if you are using MATLAB R2018b or a later version, you can utilise the “confusionchart” function with the “Normalization” name-value pair to achieve this result.

You can read more about “confusionchart” using the follwing MATLAB command:

>> doc confusionchart

I hope this helps!