Gromacs DSSP Secondary structure analysis

[nilanjana88]

GROMACS version: 2024.2
GROMACS modification: Yes/No
Here post your question

I am doing DSSP analysis. My goal is to create plots of time based statistics of secondary structure like the one below,

But, everytime I’m getting a weird plot.
The series of commands I used,
gmx dssp -s step7_100.tpr -f step7_fit.xtc -num dssp.xvg -o dssp.dat -tu ns
And plotted the graph in XMgrace with the command,
xmgrace -nxy dssp.xvg

But my plot is looking like this,

Could you please explain what could be the reason for this?

[SSurya]

Your desired DSSP graph (the legacy) is no longer possible with Gromacs (2024 onwards version). It used to be xpm files removed from the updated versions of gmx dssp.
Somewhere (not sure, long ago), I read may be in 2025 versions it will be included again but till now no luck.
May be developers can give the right information on whether it will come back or not.