Introduction to TCL Scripting in VMD part2 (write your first script from scratch)
This video is a second part of an introduction to TCL scripting in VMD (Tk Console.), the software from the University of Illinois (http://www.ks.uiuc.edu/).
VMD provides embedded scripting languages (Python and Tcl) for the purpose of user extensibility. In this section we will discuss the basic features of the Tcl scripting interface in VMD. You will see that everything you can do in VMD interactively can also be done with Tcl commands and scripts, and how the extensive list of Tcl text commands can help you investigate molecule properties and perform analysis.
VMD is a powerful tool for analysis of structures and trajectories. Numerous tools for analysis are available under the VMD Main menu item Extensions $ \rightarrow $ Analysis. In addition to these built-in tools, VMD users often use custom-written scripts to analyze desired properties of the simulated systems. VMD Tcl scripting capabilities are very extensive, and provide boundless opportunities for analysis.