[Galaxy-user] sum of the length of regions

hi! i found it hard to get the sum of the length of regions. I ended up multiplying mean (sum stats) by the number of regions, for which I had to calculate the length with an expression first. Maybe I overlooked a simple way of getting what i want? radek --- Radek Szklarczyk, radek@cs.vu.nl, www.cs.vu.nl/~radek