© Steffen Weber, June 1997

This applet/Application is my first JAVA program. It is based on my software for the PC-AT.

*Java Stereograms* plots stereographic
projections of poles onto a Wulff net. The pole distribution is
determined by the given unit cell parameters. It is possible to
give restraints to the number of generated poles by editing the
values for the "maximum order" (maximum value of an
index hkl) and the range of interplanar spacings "d"
(dmin-dmax). For indexing the poles in the stereographic
hemisphere simply click at them. The angles *Rho* and *Phi*
corespond to rotations of the whole set on the Wulff net (always
from zero position).

For input of the *unit cell constants*, *unit
cell angles* and the *orientation vector* you have to
leave a SPACE between each data item !

As in my PC software the *orientation vector*
means the pole of some plane [hkl] (not [uvw]).

Don't set max.order too high when running it as an applet, since it might be slow. The maximum number of calculated poles is 5000.

**NOTE:** For hexagonal systems BRAVAIS
indices ( h k -(h+k) l )are displayed. However for the
orientation vector only the three indices (hkl) are to be given.

**NOTE:** I included the search for all
equivalent poles for non-cubic systems. To do so, the actual
hkl-loop runs from *-2*max.order* to *+2*max.order*
(only for non-cubic case). Please keep that in mind and dont set *maximum
order* too high, since the calculation might take considerable
time. However this feature is needed if one wants to obtain
symmetrical patterns.