linr, logr

1 files changed, 33 insertions, 0 deletions

diff --git a/R_LogR/mlclass-ex2/plotData.m b/R_LogR/mlclass-ex2/plotData.m
new file mode 100644
index 0000000..2eda757
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+++ b/R_LogR/mlclass-ex2/plotData.m
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+function plotData(X, y)
+%PLOTDATA Plots the data points X and y into a new figure
+%   PLOTDATA(x,y) plots the data points with + for the positive examples
+%   and o for the negative examples. X is assumed to be a Mx2 matrix.
+
+% Create New Figure
+figure; hold on;
+
+% ====================== YOUR CODE HERE ======================
+% Instructions: Plot the positive and negative examples on a
+%               2D plot, using the option 'k+' for the positive
+%               examples and 'ko' for the negative examples.
+%
+
+#positive_vals = find(y == 1);
+#negative_vals = find(y == 0);
+
+
+#plot(X(positive_vals, 1), X(positive_vals, 2), 'k+', 'MarkerSize', 7);
+#plot(X(negative_vals, 1), X(negative_vals, 2), 'ko', 'MarkerSize', 7);
+
+
+pos = find(y==1); neg = find(y == 0);
+plot(X(pos, 1), X(pos, 2), 'k+', 'MarkerSize', 7);
+plot(X(neg, 1), X(neg, 2), 'ko', 'MarkerSize', 7);
+
+% =========================================================================
+
+
+
+hold off;
+
+end