Visualize Decision Surfaces on K Nearest Neighbor Classification | Machine Learning | MATLAB

gscatter Documentation: https://www.mathworks.com/help/stats/...



%Code:

clc

close all

modelformed=fitcknn(data,'Class~PL+PW');

modelformed.NumNeighbors=10;

e=min(data.PL):0.01:max(data.PL);

f=min(data.PW):0.01:max(data.PW);

[x1 x2]=meshgrid(e,f);

x=[x1(:) x2(:)];

ms=predict(modelformed,x);

gscatter(x1(:),x2(:),ms,'cym');

hold on;

gscatter(data.PL,data.PW,data.Class,'rgb','.',30);

title('knn Classification Visualization');

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