is the analysis section in west.cfg of tutorial 7.3 correct?

Skip to first unread message

Ibrahim Mohamed

Oct 23, 2023, 8:39:56 AM10/23/23
to westpa-users
i was following the tutorial 7.3 and found that the analysis section contains these boundaries  [0.0,2.6,12.0,'inf']. Should not they be [0.0,4.0,'inf'] since the folded state is within 0 and 4.0 and unfolded state is larger than 4.0?

     directory: ANALYSIS                # specify the directory all analysis files should exist in.
     kinetics:                          # general options for both kinetics routines.
       step_iter: 1
       evolution: cumulative
       extra: [ 'disable-correl' ]
     analysis_schemes:                  # Analysis schemes.  Required: name (TEST), states, and bins
         enabled: True
           - type: RectilinearBinMapper
               - [0.0,2.6,12.0,'inf']
           - label: bound
               - [0]
           - label: unbound
               - [12.1]  

Ford, Baily Wayne

Oct 23, 2023, 1:43:50 PM10/23/23
Hi Ibrahim,
The boundaries listed here are just place holders from the NaCl simulations; they have since been removed to avoid confusion. Tutorial 7.3 is intended to familiarize users with alternative methods for calculating rates, so w_ipa is not advised. For tutorial 7.3, it is recommended to use the w_fluxanl tool to generate a fluxanl.h5 file that contains the instantaneous probability flux into the target state for each iteration. From there, you can use the supplied script with the appropriate Tau value and time width to calculate rate constants. 
Baily Ford

From: <> on behalf of Ibrahim Mohamed <>
Sent: Monday, October 23, 2023 8:39 AM
To: westpa-users <>
Subject: [westpa-users] is the analysis section in west.cfg of tutorial 7.3 correct?
You received this message because you are subscribed to the Google Groups "westpa-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to
To view this discussion on the web visit

Oct 23, 2023, 2:59:28 PM10/23/23
Hi Baily,

Thank you for your description. i have not finished the tutorial yet so i did not know that w_ipa will not be used.
So this mean that whether this section is present or not the rest of the tutorial will not depend on it, right?


Ford, Baily Wayne

Oct 23, 2023, 3:11:30 PM10/23/23
Hi Ibrahim, 
All of 7.3 should be independent of the analysis section in the west.cfg file. Feel free to remove it if you wish, but if shouldn't cause any issue if you just ignore it.
I hope this helps,
Baily Ford

From: <> on behalf of <>
Sent: Monday, October 23, 2023 2:59 PM
To: <>
Subject: Re: [westpa-users] is the analysis section in west.cfg of tutorial 7.3 correct?

Oct 29, 2023, 2:39:41 PM10/29/23
to, Ford, Baily Wayne
Is it possible to have a negative inf value in the boundaries? 
For example can I have these boundary [inf, 20,15,10,5,0,-5,-10,-15,-20, -inf] in West.cfg file


Nicolas Frazee

Oct 30, 2023, 12:34:55 PM10/30/23
to westpa-users
Hey Ibrahim,

The bins must be set to be increasing from negative to positive. Negative infinity can be defined but must be surrounded by quotes: '-inf'

['-inf', -20, -15, -10, -5, ...]


Reply all
Reply to author
0 new messages