problem in atom.select

[Former user]

Hi sir, i am just a beginner. I tried the following and got the error.

> pdb <- "nw_4TNR_All.pdb"
> sel1<- atom.select(pdb, resno =c(137,142,145,119,117), chain = "D",elety ="CA")

Error in UseMethod("atom.select") : no applicable method for 'atom.select' applied to an object of class "character"

i know its something silly, but i couldn't find the reason

regards

[Xinqiu Yao]

You need to use a pdb object instead of pdb file name.

pdb <- read.pdb('nw_4TNR_All.pdb')
sel1<- atom.select(pdb, resno =c(137,142,145,119,117), chain = "D",elety ="CA")