Xi Ouyang wrote:
Hi, there are 3 questions I want to ask.

1. I run the md from the pdb file successfully and get a .trr trajectory file. But when I load the .trr file in VMD, there is just 1 frame. I have 1000 steps and want to have every step as a frame. How can I do this?

Consult section 7.3 of the manual for changing the output options.

2. Since I do signal processing, I want to do wavelet-based coarse graining on the protein model. Then the big question is how can I introduce the wavelet into gromacs?

You'll have to form this question more precisely :-)

3. I want to stretch the protein, how can I do this in Gromacs? Should I do something with the .mdp file?

Consult the manual. You can define forces that might pull the protein apart in some fashion.

Mark
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