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From: | Xikai Jiang |
Subject: | Re: [ESPResSo-users] particle does not exist |
Date: | Tue, 17 Jun 2014 23:06:44 -0400 |
Thank you, Stefan. I check the content of confout, it shows correct particle information as
{particles {id pos v} { 0 1 2 3 0 0 0 } ... } Just find that it's a simple mistake I made that I'm accessing a particle that was already deleted.. So it's important to detect which particles are deleted. When I retrieve the deleted particle position, Espresso will return a value of "na", to find which atom is deleted, I find that one way is to compare it with a number such as: if { [part $id print pos] >=100 } { puts "it's deleted particle" } > Subject: Re: [ESPResSo-users] particle does not exist > From: address@hidden > Date: Tue, 17 Jun 2014 19:00:49 +0200 > CC: address@hidden > To: address@hidden > > Dear Xikai, > please check the content of confout for particle 4633. There must be a section like > Are you sure that there is something like { particle 4633 pos 1 2 3 } in there? > Just after reading the configuration you should then be able to e.g. print its position, > puts [ part 4633 print pos ] > and also to delete it. It is very likely that this is a simple error in your particle indexing or something similar. > Cheers and good luck > Stefan > > On Jun 17, 2014, at 6:54 PM, Xikai Jiang <address@hidden> wrote: > > > Dear all: > > > > I've got a question about deleting particles from a simulation continued > > from previous one. > > > > In the older simulation, I wrote blockfiles to store particle information such as pid, > > positions, velocities. > > > > When the old simulation finished, I continued to run it by reading saved blockfiles by > > the following command: > > > > set last [open "confout" "r"] > > while { [ blockfile $last read auto] != "eof" } { } > > close $last > > > > The simulation can continue running without problem, however, when I attempt to > > delete a particle, it said "particle 4633 does not exist and cannot be removed". > > I'm sure that particle 4633 exists in the saved configuration file. > > > > Does anyone encounter this problem before? > > > > Thanks for your time! > > > > XIkai > |
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