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Triangular kernel
k = ktriangle(w) is a triangular kernel within a rectangular matrix k. The dimensions k are WxW if w is scalar or w(1) wide and w(2) high. The triangle is isocles and is full width at the bottom row of the kernel and with its apex in the top row.
>> ktriangle(3) ans = |0 1 0| |0 1 0| |1 1 1|
© 1990-2012 Peter Corke.