29 lines
707 B
Matlab
29 lines
707 B
Matlab
function [X_poly] = polyFeatures(X, p)
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%POLYFEATURES Maps X (1D vector) into the p-th power
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% [X_poly] = POLYFEATURES(X, p) takes a data matrix X (size m x 1) and
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% maps each example into its polynomial features where
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% X_poly(i, :) = [X(i) X(i).^2 X(i).^3 ... X(i).^p];
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%
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% You need to return the following variables correctly.
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X_poly = zeros(numel(X), p);
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% ====================== YOUR CODE HERE ======================
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% Instructions: Given a vector X, return a matrix X_poly where the p-th
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% column of X contains the values of X to the p-th power.
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%
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%
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for i=1:p
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X_poly(:,i) = X.^i;
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endfor
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% =========================================================================
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end
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