VMD-L Mailing List

From: Giacomo Fiorin (giacomo.fiorin_at_gmail.com)
Date: Thu Jul 11 2019 - 09:43:59 CDT

Hi, this is a Tcl syntax idiosyncrasy: the braces will treat their content
as a string literal, and prevent expanding the variable inside them. Try:

$sel moveby [list 0 0 $x]

Giacomo

On Thu, Jul 11, 2019 at 7:13 AM surya narayanan chandrasekaran <
sonofsunsurya_at_gmail.com> wrote:

> Hi,
> I was trying a simple for loop inside my script that need to give
> variable to move command.
>
> for {set x 17.1} {$x > 8} {incr x - 1} {
> $sel moveby {0 0 $x}
> $sel1 writexyz Sep_$x.xyz
> }
>
> But I am getting error. "atomselection moveby: translation vector can only
> be of length 3" or
> "atomselect moveby: non-numeric in vector"
>
> I tried "$x", puts, [expr $x]
>
> --
> Warm regards,
> Surya
> 

-- 
Giacomo Fiorin
Associate Professor of Research, Temple University, Philadelphia, PA
Research collaborator, National Institutes of Health, Bethesda, MD
http://goo.gl/Q3TBQU
https://github.com/giacomofiorin