Re: [gmx-users] index file for g_order

2006-06-05 Thread Arneh Babakhani
Ok great, will do, thanks for your help! Alan Dodd wrote: Well, for the terminal methyl, you have no way of knowing which way the hydrogeons are pointing... So no. However, it is worth including the carbonyl carbon (although it has no hydrogeons, so no order parameter), as a reference point for

Re: [gmx-users] index file for g_order

2006-06-05 Thread Alan Dodd
Well, for the terminal methyl, you have no way of knowing which way the hydrogeons are pointing... So no. However, it is worth including the carbonyl carbon (although it has no hydrogeons, so no order parameter), as a reference point for the next carbon down. --- Arneh Babakhani <[EMAIL PROTECTED

Re: [gmx-users] index file for g_order

2006-06-05 Thread Arneh Babakhani
Hi Alan, great, thanks, I suspected something like that. Then, is there a way to calculate the Scd order parameters for these carbons, given that there are no explicit hydrogens??? Arneh Alan Dodd wrote: The first and last carbons are not calculated. GROMACS needs to use a C-C bond on either

Re: [gmx-users] index file for g_order

2006-06-05 Thread Alan Dodd
The first and last carbons are not calculated. GROMACS needs to use a C-C bond on either side of each carbon to place the hydrogens, and hence calculate the order parameter. --- Arneh Babakhani <[EMAIL PROTECTED]> wrote: > Hello, > > Now with the g_order bug fixed (see bugzilla #84) , > I'm try

[gmx-users] index file for g_order

2006-06-05 Thread Arneh Babakhani
Hello, Now with the g_order bug fixed (see bugzilla #84) , I'm trying to calculate the orderparameters for 13 carbon atoms of the the sn2 chain (carbons 2B thru 2N) of a DMPC membrane. So I create an index file, make a group for each type of carbon, then run g_order. The groups in the inde