path: root/remove_sevenday_frequency.m

function [ret, removed] = remove_sevenday_frequency(quantity)
	kickout = [ 0 1 1 0 0 0 0 0 0 0 0 0 0 0 ];

	f = fft(quantity);
	removed = diag(kickout) * f;
	ret = real(ifft(diag(~kickout) * f));
end