Hi, I understand you are getting issues in categorizing and plotting some sample data. You may use find function to get the index for all the categories and plot using plot function. Here is a sample code for it.
clc;
clear all;
% Categories Value1 Value2
A= [1 20 5;
2 25 7;
3 18 2;
4 27 9;
1 21 6;
2 26 8;
3 17 1;
4 25 11;
1 23 4;
2 27 5;
3 16 2;
4 26 8;];
max_cat= max(A,[],1);
for i=1:max_cat(1)
Val(:,i)=find(A(:,1)==i);
cat_value1(:,i)=A(Val(:,i),2); % for value 1
cat_value2(:,i)=A(Val(:,i),3); % for value 2
end
%Getting 95% of data
cat_value1_ll=0.95*cat_value1;
cat_value1_ul=1.05*cat_value1;
%Plotting for Category1 Value 1
plot(cat_value1(1,:));
hold on;
plot(cat_value1_ll(1,:),'.-');
plot(cat_value1_ul(1,:),'.-');
hold off;
