diff --git a/mlclass-ex1/plotData.m b/mlclass-ex1/plotData.m
index d1a3f76..cb6212b 100644
--- a/mlclass-ex1/plotData.m
+++ b/mlclass-ex1/plotData.m
@@ -14,7 +14,11 @@ function plotData(x, y)
 %       appear as red crosses. Furthermore, you can make the
 %       markers larger by using plot(..., 'rx', 'MarkerSize', 10);
 
-plot(x, y, 'rx', 'MarkerSize', 10); % Plot the data
+data = load('ex1data1.txt'); % read comma separated data
+X = data(:, 1); y = data(:, 2);
+m = length(y);
+
+plot(X, y, 'rx', 'MarkerSize', 10); % Plot the data
 ylabel('Profit in $10,000s'); % Set the y−axis label
 xlabel('Population of City in 10,000s'); % Set the x−axis label