Hi, I used g_select to choose the hydration shell molecules of my protein from a trajectory of 15ns saved every 10ps (1500 frames). Now I want to feed the generated index file into g_spatial to calculate the SDF of solvent around my protein. However, when I feed this into the g_spatial, it lists 1500 group and my protein. How can I tell the command to use the 1500 groups to calculate the SDF? Or can I specify a dynamic selection when I run the g_spatial? sth like "resname SOL and within 1.0 of protein"? Best,
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