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Biomolecular simulation trajectory/data analysis.

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Feature Request

This allows non-standard, user-defined distance metric in clustering analysis.

Less than 3 atoms means the covariance matrix will not be properly populated and cause the calculation to fail.

Add support for the following trajectory formats: - [x] TNG format - [ ] MMTF format http://mmtf.rcsb.org/ - [x] Desmond DTR format

enhancement

Hello, For mixtures of two solvents ( A+B), A is 10% vol:vol conc and B is TIP3P water. purewater does not calculate the bulk free energy of the A co-solvent...

Hi, I am trying to find out which of the GIST columns are referenced to bulk water in order to compute the free energy. AMBER tutorial 25 suggests to compute...

![image](https://user-images.githubusercontent.com/48214273/96932497-fac31d00-148c-11eb-93d5-08a88fd26ea7.png)

Hi, while working on https://github.com/Amber-MD/pytraj/issues/1553, I've realized that `cpptraj` message is not very clear to me. ``` parm tz2.parm7 trajin tz2.nc rms myrms @CA radgyr myrms @CA nomax ``` Here...

I am using spam to calculate free energies for a mixed solvent MD simulation (protein is ABL kinase) My input file is as follows: parm /users/dicksmit/gphani/unsabi/users2/gphani/3_mixMD/ablkinase_3KFA/ACN_H2O_5-95vv_layered/3kfa_md_9pmemdcuda/3kfa_layer_ACN_H2O_5-95vv.prmtop trajin /users/dicksmit/gphani/unsabi/users2/gphani/3_mixMD/ablkinase_3KFA/ACN_H2O_5-95vv_layered/3kfa_md_1-pmemdMPI/New4G_production.1.crd 1 50...

Dear Professor, I greatly appreciate if you would guide me to how I can calculate by ambertools the Interaction entropy for protein-protein binding like in (https://doi.org/10.1021/jacs.6b02682, DOI: 10.1021/acs.jcim.6b00734, http://dx.doi.org/10.1063/1.4978893]). Greeting,...