EMfamily

Program: EMfamily

This program can be used to make a stereographic projection (in PostScript) of a series of equivalent directions or crystal planes for a given crystal structure and a given projection direction.

Let's produce a [120] stereographic projection for Aluminum, and draw the direct space projection of the families of <111> and <100> directions:

 Enter xtal file name : Al.xtal
 Real Space (d) or reciprocal space (r) : d
 Enter viewing direction indices [uvw] : 1,2,0
 Enter Postscript file name : test.ps
 Enter u,v,w : 1,1,1
  Multiplicity =  8
 Another family (1/0) ? 1
 Enter u,v,w : 1,0,0
  Multiplicity =  6
 Another family (1/0) ? 0
 Another pattern (1/0) ? 0

This produces a test.ps PostScript file that looks like this:

Note that this can also be done for families of planes by selecting the r option for the second prompt.