[plotting] scatterplot

plotting/code/scatterplot.m

@@ -0,0 +1,28 @@
+x = 1:2:100;
+y = (0.5 .* x - 0.56) + randn(size(x)) .* 5.;
+
+f = figure();
+set(f, 'paperunits', 'centimeter', 'papersize', [15, 5], ...
+    'paperposition', [0, 0, 15, 5], 'color', 'white');
+
+subplot(1, 3, 1);
+scatter(x, y, 15, 'r', 'filled');
+xlabel('x');
+ylabel('y');
+text(-35, max(ylim) * 1.075,'A', 'FontSize', 12);
+
+subplot(1, 3, 2)
+scatter(x, y, 1:length(x), 'r');
+xlabel('x');
+ylabel('y');
+text(-35, max(ylim) * 1.075,'B', 'FontSize', 12);
+
+subplot(1, 3, 3)
+colors = zeros(length(x),3);
+colors(:,1) = round(1:255/length(x):255)/255';
+scatter(x, y, 15, colors, 'filled')
+xlabel('x');
+ylabel('y');
+text(-35, max(ylim) * 1.075,'C', 'FontSize', 12);
+
+saveas(f, '../lecture/images/scatterplot.png')