Index exceeds matrix dimensions.

Error in lasso (line 547)
df = df(reverseIndices);

Error in my_LASSO (line 8)
B = lasso(X,Y)

clear all
X = randn(100,1);
r = [0;2;0;-3;0]; % Only two nonzero coefficients
Y = filter(r,1,X);
Y = Y + randn(100,1)*.1; % Small added noise

B = lasso(X,Y)