I want to generate multiple objects with R's calculations saved at once.

Using R, the result of the calculation that was repeated several times (just extracting conditions from the data frame).I want to save ) to multiple objects. I've given a different list of conditions in columns every time, but I want to keep the data frame multi-row x multi-row structure, so I'm trying to rename the object every loop and save multiple objects.

Therefore, I wrote it using for as follows, but

for(i, in 1:length(selection1) {
Object=DataFrame [selection1[[i]],]
}

I'm having a hard time because I don't know how to change the name of the object for each loop.

If I want to change the name of an object in these for statements, how do I specify it?

2022-09-29 22:09

2 Answers

I'm not sure, but

set.seed(11)
dat<-data.frame(label1=rep(c("a", "b", "c"), each=10),
              label2 = rep(1:5,6),
              A = rnorm(30,1,3),
              B = rnorm(30,5,3))

This kind of data is

Make it a list.

 dat1<- NULL
for (i in 1:5) dat1 [[i]]<-dat [dat$label2==i,]

Or save them separately as csv.

list_name<-paste(1:5, ".csv", sep="")
for (i in 1:5) write.csv(dat[dat$label2==i,], list_name[i])

Does that mean...

2022-09-29 22:09

In addition to user23327, there is also a way to write using assign as follows

>results<-c("v", "w", "x", "y", "z")
>for(i in 1:5)assign(results[i], dat[dat$label2==i,])
>v
label1 label2 AB
1a 1-0.7730933 1.68714787
6a 1-1.80245406.45403114
11b 1-1.4852997 0.09045108
16b 11.03698093.96837696
21c 1-1.04755297.36961172
26c 11.0214764 6.62787928
>w
label1 label2 AB
2a 2 1.07978311 2.185549
7a24.970816944.441842
12b 2-0.04505518 5.061144
17b 20.33109138-1.560344
22c 20.95242542 4.310018
27 c 20.43719967 4.530065

2022-09-29 22:09

If you have any answers or tips

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