different outputs for same input in every run

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Dear all,
I am using fitcknn function and I expect a 8*2 matrix to be the output (detected varialble). But sometime the output is correct and other times not. I used fixed rand number seed and clear all variables before every run but it does not work.
Any idea what is the problem of my code? Many thanks in advance.
clear all;
data = load('data.mat').data;
%%%%%%%%%
find_kmeans=kmeans(data(:,1),2);
data_2=table(data(:,1),find_kmeans(:));
data_2.Properties.VariableNames = ["counts", "detect"];
Mdl=fitcknn(data_2,'detect');
Mdl.NumNeighbors=1;
test_data=data(:,1);
pred=predict(Mdl,test_data);
wanted_points=(find (pred==2));
wanted_points_cnts= data(wanted_points,1);
detected=table(wanted_points(:),wanted_points_cnts(:));
scatter(wanted_points,wanted_points_cnts)
  2 Comments
Hamid
Hamid on 4 Aug 2022
@Walter Roberson Many thanks for the useful comment. I removed it here and maybe the line I wrote my randon seed was wrong.

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Accepted Answer

KSSV
KSSV on 4 Aug 2022
%%%%%%%%%
rng(1)
find_kmeans=kmeans(data(:,1),2);
data_2=table(data(:,1),find_kmeans(:));
data_2.Properties.VariableNames = ["counts", "detect"];
Mdl=fitcknn(data_2,'detect');
Mdl.NumNeighbors=1;
test_data=data(:,1);
pred=predict(Mdl,test_data);
wanted_points=(find (pred==2));
wanted_points_cnts= data(wanted_points,1);
detected=table(wanted_points(:),wanted_points_cnts(:));
scatter(wanted_points,wanted_points_cnts)
drawnow

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