R 基于列计数的数据帧整形
我有一个2列100000行数据框,如下所示:R 基于列计数的数据帧整形,r,dataframe,reshape,reshape2,R,Dataframe,Reshape,Reshape2,我有一个2列100000行数据框,如下所示: Count String 3 "Hello World" 2 "Hi John" 1 "Dear Joe" 我想将此数据帧重新塑造为1列数据帧,删除计数,而是添加重复项。例如: String "Hello World" "Hello World" "Hello World" "Hi John" "Hi John" "De
Count String
3 "Hello World"
2 "Hi John"
1 "Dear Joe"
我想将此数据帧重新塑造为1列数据帧,删除计数,而是添加重复项。例如:
String
"Hello World"
"Hello World"
"Hello World"
"Hi John"
"Hi John"
"Dear Joe"
这里有一种方法
a <- c(3:1)
foo <- c("hello", "hi", "dear")
rep(foo, a)
[1] "hello" "hello" "hello" "hi" "hi" "dear"
a这里有一种方法
a <- c(3:1)
foo <- c("hello", "hi", "dear")
rep(foo, a)
[1] "hello" "hello" "hello" "hi" "hi" "dear"
a这里有一种方法
a <- c(3:1)
foo <- c("hello", "hi", "dear")
rep(foo, a)
[1] "hello" "hello" "hello" "hi" "hi" "dear"
a这里有一种方法
a <- c(3:1)
foo <- c("hello", "hi", "dear")
rep(foo, a)
[1] "hello" "hello" "hello" "hi" "hi" "dear"
a试试看
one\u col\u df试试看
one\u col\u df试试看
one\u col\u df试试看
1列几乎重复的见from:-)t(带df,rep(String,Count))
1列几乎重复的见from:-t(带df,rep(String,Count))
1列几乎重复的见from:-)t(带df,rep(String,Count))
1列几乎重复的见from:-t(带df,rep,Count))(字符串,计数))