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Diffstat (limited to 'R_LogR/mlclass-ex2/plotData.m')
| -rw-r--r-- | R_LogR/mlclass-ex2/plotData.m | 33 |
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 --- /dev/null +++ b/R_LogR/mlclass-ex2/plotData.m @@ -0,0 +1,33 @@ +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 |