view plotData.m @ 3:ace890ed0ed9 default tip

Use lookup to look for all words at once
author Jordi Gutiérrez Hermoso <jordigh@octave.org>
date Sat, 10 Dec 2011 15:56:02 -0500
parents f602dc601e9e
children
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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.
%
% Note: This was slightly modified such that it expects y = 1 or y = 0

% Find Indices of Positive and Negative Examples
pos = find(y == 1); neg = find(y == 0);

% Plot Examples
plot(X(pos, 1), X(pos, 2), 'k+','LineWidth', 1, 'MarkerSize', 7)
hold on;
plot(X(neg, 1), X(neg, 2), 'ko', 'MarkerFaceColor', 'y', 'MarkerSize', 7)
hold off;

end