function h = histp(x, xmin, xmax, nbins)%HISTP	Histogram estimate of 1-dimensional probability distribution.%%	Description%%	HISTP(X, XMIN, XMAX, NBINS) takes a column vector X  of data values%	and generates a normalized histogram plot of the  distribution. The%	histogram has NBINS bins lying in the range XMIN to XMAX.%%	H = HISTP(...) returns a vector of patch handles.%%	See also%	DEMGAUSS%%	Copyright (c) Ian T Nabney (1996-2001)ndata = length(x);bins = linspace(xmin, xmax, nbins);binwidth = (xmax - xmin)/nbins;num = hist(x, bins);num = num/(ndata*binwidth);h = bar(bins, num, 0.6);