;This function takes an array of length n, assumes its elements are ;midpoint values for bins and returns an n+1-element array of bin ;edges. ; created by Robert Lillis function bin_edges, x, min = min, max = max n = n_elements(x) diff = 0.5*(x[1:*]-x[0:n-2]) y = [x[0], x[0:n-2] + diff, x[n-1]] if keyword_set(min) then y[0] = min if keyword_set(max) then y[n] = max return, y end