xgraduate axis graduation [xi, xa, np1, np2, kMinr, kMaxr, ar] = xgraduate(xmi, xma) xmi, xma real scalars. xi, xa, kMinr, kMaxr, ar real scalars. np1, np2 integers. xgraduate returns the axis graduations which are used by the plot routines (with pretty print flag enabled). It returns an interval [xi, xa] which contains the given interval [xmi,xma] and such that xi= kMinr*10^ar, xa=kMaxr*10^ar and the interval can be divided into np2 intervals and each interval is divided in np1 sub-intervals. graduate plot2d