Fixed Bug #{2508}
Fixed Bug #{2508}

Fixed.  If no defined data series actually has data points, the default 
xmin and xmax values are used.  If the xmin turns out to equal the xmax
(i.e, there's a single data point) then xmax is set to xmax + 1.


AthenaModel/mars-legacy,AthenaModel/mars-legacy,AthenaModel/mars-legacy,AthenaModel/mars-legacy,AthenaModel/mars-legacy