Cameron Manual

Chapter 2: How To Get Started

There is a basic 'startup' procedure that can be followed in order to get a picture on to the screen. The following steps are required :-

1)      Load in a spacegroup if required
2)      Load in the unit cell dimensions
3)      Load in the atomic coordinates
4)      Select an output device
5)      Set the atom drawing style to BALL
6)      Draw a picture

This can be accomplished with the following commands, which are illustrated for a compound which has a spacegroup P 21, unit cell parameters a=6.0, b=7.0, c=8.0, alpha=90, beta=115, gamma=90. The atomic coordinates are held in a "list5" type file NIGEL.L5.

SPACEGROUP P 21
INPUT
CELL 6 7 8 90 115 90
LIST5 NIGEL.L5
DEVICE VGA
BALL ALL
FILL
VIEW

From here the view direction can be controlled via XROT, YROT, ZROT or CURSOR. If you require a picture of all the atoms in the unit cell, and the unit cell also displayed, the commands are :-

PACK CELL
INCLUDE CELL
VIEW