Need help with tcl please :(

[Habby]

Hey guys, hope you can help  me out with this code I've been developing in tcl which is the language used for vmd tk console, basically I'm trying to get this function to work. It measures the dihedral angle between 4 atoms from a molecule (trying to get phi and psi angles for a ramachandran plot), the way the function is supposed to work as follows:

measure dihed [{{<atomid1> <molid>} {<atomid2> <molid>} {<atomid3> <molid>} {<atomid4> <molid>}}]

The atomids are the id number of the atom in the molecule sequence which I'm able to easily get from my script (tested), but when I type the $var where <atomid> are supposed tto be, this is shown by the console: "expected integer but got "$var" measure dihed: bad atom index". I tried to manualy input the atomids, say.. instead of typing {{$var 0} ..... }} I just type {{12441 0} ..... }} and the function works. I've checked some forums and found no help at all. please I need some help

[reniat]

I have zero experience with tcl, it looks VERY different from the programming paradigms i'm used to, and i don't really have enough from this post to guess, but I would say try printing out the value of $var to see what it is. I'm guessing it's not 12441, but something else, and the value it is might give you some insight into why it's not set correctly. 

[rcorkum]

tcl oh that brings back memories if I remember correctly one place it was or is used in is in the MUD client tinyFugee 

 

if this resource isn't a help . tcl website and getting started section

 

reply again I'll try to dig something up if I remember correctly it reminded me if rexx (I used arexx) and used it alot.

[Habby]

20 hours ago, rcorkum said:

tcl oh that brings back memories if I remember correctly one place it was or is used in is in the MUD client tinyFugee 

 

if this resource isn't a help . tcl website and getting started section

 

reply again I'll try to dig something up if I remember correctly it reminded me if rexx (I used arexx) and used it alot.

actually the solution was easy af, somehow typing my variables in the function, between the <{}> was making the problem, all I had to do is replace the <{}> with  {""}

[Habby]

21 hours ago, reniat said:

I have zero experience with tcl, it looks VERY different from the programming paradigms i'm used to, and i don't really have enough from this post to guess, but I would say try printing out the value of $var to see what it is. I'm guessing it's not 12441, but something else, and the value it is might give you some insight into why it's not set correctly. 

I solved it and the problem wasn't the $var at all, but the <{}> I was using instead of <" "> ... I felt like those times when you want to shoot yourself