Hello Selina,
You can make the plot as shown in the reference image you shared by using the “scatter” and “tiledlayout” functions. The function “tiledlayout” lets you plot multiple axes as tiles in a figure window and the “scatter” function makes the scatterplot.
The code below shows a way to make the corresponding plot
t = tiledlayout(2,2);
nexttile;
x = randn(30,1);
y = randn(30,3);
scatter(x,y(:,1),"blue", 'filled');
hold on;
scatter(x,y(:,3),"red");
hold on;
scatter(x,y(:,2),"green", 'filled');
ylabel("Total Number of Impurities")
nexttile;
x = randn(30,1);
y = randn(30,3);
scatter(x,y(:,1),"blue", 'filled');
hold on;
scatter(x,y(:,3),"red");
hold on;
scatter(x,y(:,2),"green", 'filled');
legend({'AA', 'A', 'B'});
nexttile;
x = randn(30,1);
y = randn(30,3);
scatter(x,y(:,1),"blue", 'filled');
hold on;
scatter(x,y(:,3),"red");
hold on;
scatter(x,y(:,2),"green", 'filled');
ylabel("EBN Colour");
xlabel("Curvature");
nexttile;
x = randn(30,1);
y = randn(30,3);
scatter(x,y(:,1),"blue", 'filled');
hold on;
scatter(x,y(:,3),"red");
hold on;
scatter(x,y(:,2),"green", 'filled');
xlabel("Total EBN Area");

You can refer to the following documents for more information on the “scatter” and “tiledlayout” functions:
1. “sactter” : https://www.mathworks.com/help/matlab/ref/scatter.html
2. “tiledlatout” : https://www.mathworks.com/help/matlab/ref/tiledlayout.html
Hope this helps
