PREABS : Interactive crystal shape manipulation

diff [a] diffractometer description
orient [a] crystal orientation
orface [b] microscope orientation
facept [b] face described by three points
face [b] face described by χ, φ, and distance
faceom [b] face described by χ, \(\phi \), \(\omega \) and distance
faceml [b] face described by Miller indices and distance

[a] diff and orient are mandatory.

[b] Only one of the methods orface - facept, face or faceml may be used to specify the faces of the crystal.

PREABS Option Code Arg   Def
  double buffered graphics [a] dbuf      
  precision scale factor [b] pscal q scale distance  

[a] On some screens and for large window sizes, coppying the back buffer to the visible window adds a significant time lag which detracts from general performance. On other displays, particularly linux PCs this option can help quite a bit.

[b] This option is used to avoid rounding errors for small crystals.

diff [a] 1 sense of rotation of the2 \( \theta \) circle c clockwise  
      a anti-clockwise  
  2 sense of rotation of the \( \chi \) circle c clockwise  
      a anti-clockwise  
  3 sense of rotation of the \( \phi \) circle c clockwise  
      a anti-clockwise  
  4 sense of rotation of the \( \omega \) circle c clockwise  
      a anti-clockwise  
  5 sense of rotation of the \( \psi \) circle c clockwise  
      a anti-clockwise  
  6 value of \(\phi \) at \(\chi \) = 90 degrees     0
  7 minimum possible \(\omega \) (-180 < \(\omega \) < 180)     -48
  8 maximum possible \(\omega \) (-180 < \(\omega \) < 180)     58

[a] See the Diffractometer Description in the ABSORB for the method to be used in determining the sense of rotation for each diffractometer circle.

orient 1-3 hkl indices of first orienting reflection  
  4 angle χ of first orienting reflection [a]  
  5 angle φ of first orienting reflection  
  6-8 hkl indices of second orienting reflection  
  9 angle χ of second orienting reflection  
  10 angle φ of second orienting reflection  

[a] Angles in the bisecting mode. (For CAD see Ch. II of the CAD User's Manual.)

orface [a] 1-3 x, y, z coordinates of first point on orienting face  
  4-6 x, y, z coordinates of second point on orienting face  
  7-9 x, y, z coordinates of third point on orienting face  

[a] If the orface - facept method is used for entering face data, two orface lines must be used. The first contains the coordinates of three points on a plane parallel to the first orienting reflection given on the orient line. The second orface line contains the coordinates of three points on a plane parallel to the second orienting reflection given on the orient line.

facept 1-3 x, y, z coordinates of first point on bounding face  
  4-6 x, y, z coordinates of second point on bounding face  
  7-9 x, y, z coordinates of third point on bounding face  

face 1 \(\chi \) for bounding face (angles in the bisecting mode)  
  2 \(\phi \) for bounding face  
  3 distance to origin from bounding face in mm  

faceom 1 \(\chi \) for bounding face (angles in the bisectingmode)  
  2 \(\phi \) for bounding face  
  3 \(\omega \) for bounding face  
  4 distance to origin from bounding face in mm  

faceml 1-3 h, k, l indices of bounding face  
  4 distance to origin from bounding face in mm  


Banner

 Overview
 News
+Example Graphics
 History
-Documentation
   -Xtal Users Manual
      +Preface
      +Primer
      -Program controls
          System
           ABSORB
           ADDATM
           ADDPAT
           ADDREF
           ATABLE
           BAYEST
           BONDAT
           BONDLA
           BUNYIP
           CBAZA
           CHARGE
           CIFIO
           CIFENT
           CONTRS
           CREDUC
           CRILSQ
           CRISP
           CRYLSQ
           DIFDAT
           DYNAMO
           EXPAND
           FC
           FOURR
           GENEV
           GENSIN
           GENTAN
           GIP
           LATCON
           LISTFC
           LSABS
           LSLS
           LSQPL
           LSRES
           MAPLST
           MAPXCH
           MODEL
           MODHKL
           NEWCEL
           NEWMAN
           ORTEP
           OUTSRC
           PARTN
           PATSEE
           PEKPIK
           PIG
           PLOTX
           POWGEN
         + PREABS  <-
           PREPUB
           PREVUE
           REFCAL
           REFM90
           REGFE
           REGWT
           RFOURR
           RIGBOD
           RMAP
           RSCAN
           SCATOM
           SHAPE
           SHELIN
           SIMPEL
           SLANT
           SORTRF
           STARTX
           SURFIN
           VUBDF
           XTINCT
      +Reference Manual
      +Archive
       Symmetry
    FAQ
   +Developer Info
   +Retired Program Info
 Download
+Extra Software
 Support
 Contributors
 Citations
 Year 2000
 Disclaimer

Home Feedback
Copyright © 2005 Xtal System, University of Western Australia.
Prev   Next