Volume
Volume creates a new volume object from a map object. The data (3D scalar fields) are shown as a true 3D object using coloring and transparencies defined by the user to illustrate the data values.
This technique supports single and multiple isosurfaces.
Usage
Examples
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/tuAo_8-_HIc?hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/tuAo_8-_HIc?hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>
This is a silent demo movie showing the basics of loading and using a volume in PyMOL. There are more capabilities, but this is the basic functionality.