Question

Assume:

• list of n xts objects in .GlobalEnv with the suffix “.raw” (e.g: ABC.raw)
• have created a list of .raw names in a list (ie, rawfiles <- ls(pattern="*.raw",envir=.GlobalEnv))

Would like to:

• loop or lapply through rawfiles and subset a particular timeperiod in each iteration
• for example, to write this as a single line would be: new <- ABC.raw["T09:00/T10:00"] if I wanted to subset ABC.raw from 9am to 10am each day.

The problem is:

• Doesn’t seem to be an easy way of passing["Thh:mm/Thh:mm"] to a loop, apply or assign without causing errors.

Any ideas how to pass this?

In pidgeon code, I guess I’m looking for a working equivalent of:

for(i in 1:length(raw)){
    raw[i]["T09:00/T10:00"]
}

Many thanks in advance for any assistance on this.

Answer 1

Try get.

get(x) retrieves the variable whose name is stored in x, so foo<-1; get('foo') would return 1.

for ( rawname in rawfiles ) {
    get(rawname)["T09:00/T10:00"]
}