pty() const;</p>

                <p>static Range all();</p>

                <p>operator CvSlice() const;</p>

                <p>int start, end;</p>

                <p>};</p>

                <p>The class is used to specify a row or a column span in a matrix (</code></p>

                <p>"Mat") and for many other purposes. <code>Range(a,b)</code> is basically the
                    same as <code>a:b</code> in Matlab or <code>a..b</code> in Python. As in
                    Python, <code>start</code> 