R数据帧中列的成对操作
我有一个这样的数据帧R数据帧中列的成对操作,r,dataframe,dplyr,R,Dataframe,Dplyr,我有一个这样的数据帧 sample <- data.frame(x1=c(1,2),y1=c(2,1), x2=c(2,4),y2=c(3,4),x3=c(5,2),y3=c(1,6)) 样本方法1 因为它是成对的,所以可以使用mapply来完成 创建两个指向这些对的向量 p1 <- seq(1, 6, by = 2) p2 <- seq(2, 6, by = 2) 结果: [,1] [,2] [,3] [1,] 3 5 6 [2,] 3
sample <- data.frame(x1=c(1,2),y1=c(2,1), x2=c(2,4),y2=c(3,4),x3=c(5,2),y3=c(1,6))
样本方法1
因为它是成对的,所以可以使用mapply
来完成
创建两个指向这些对的向量
p1 <- seq(1, 6, by = 2)
p2 <- seq(2, 6, by = 2)
结果:
[,1] [,2] [,3]
[1,] 3 5 6
[2,] 3 8 8`
方法2
如果需要在示例表中输出成对操作,我还喜欢将包dplyr
和wrapr
结合使用
require(dplyr)
require(wrapr)
newcols <- paste0(names(sample)[seq(1, 6, by = 2)], names(sample)[seq(2, 6, by = 2)])
for (i in c(1:3)) {
wrapr::let(list(RES = newcols[i],
COL1 = names(sample)[i],
COL2 = names(sample)[i + 1]),
sample <- dplyr::mutate(sample, RES = COL1 + COL2))}
sample
x1 y1 x2 y2 x3 y3 x1y1 x2y2 x3y3
1 1 2 2 3 5 1 3 4 5
2 2 1 4 4 2 6 3 5 8
require(dplyr)
要求(wrapr)
newcols方法1
因为它是成对的,所以可以使用mapply
来完成
创建两个指向这些对的向量
p1 <- seq(1, 6, by = 2)
p2 <- seq(2, 6, by = 2)
结果:
[,1] [,2] [,3]
[1,] 3 5 6
[2,] 3 8 8`
方法2
如果需要在示例表中输出成对操作,我还喜欢将包dplyr
和wrapr
结合使用
require(dplyr)
require(wrapr)
newcols <- paste0(names(sample)[seq(1, 6, by = 2)], names(sample)[seq(2, 6, by = 2)])
for (i in c(1:3)) {
wrapr::let(list(RES = newcols[i],
COL1 = names(sample)[i],
COL2 = names(sample)[i + 1]),
sample <- dplyr::mutate(sample, RES = COL1 + COL2))}
sample
x1 y1 x2 y2 x3 y3 x1y1 x2y2 x3y3
1 1 2 2 3 5 1 3 4 5
2 2 1 4 4 2 6 3 5 8
require(dplyr)
要求(wrapr)
newcols这个怎么样
sample <- data.frame(x1=c(1,2),y1=c(2,1),
x2=c(2,4),y2=c(3,4),x3=c(5,2),y3=c(1,6))
sample_new <- data.frame(x1=c(1,2),y1=c(2,1),
x2=c(2,4),y2=c(3,4),x3=c(5,2),y3=c(1,6),sumx1y1=(sample$x1 + sample$y1),
sumx2y2=(sample$x2 + sample$y2),sumx3y3=(sample$x3 + sample$y3))
sample这个怎么样
sample <- data.frame(x1=c(1,2),y1=c(2,1),
x2=c(2,4),y2=c(3,4),x3=c(5,2),y3=c(1,6))
sample_new <- data.frame(x1=c(1,2),y1=c(2,1),
x2=c(2,4),y2=c(3,4),x3=c(5,2),y3=c(1,6),sumx1y1=(sample$x1 + sample$y1),
sumx2y2=(sample$x2 + sample$y2),sumx3y3=(sample$x3 + sample$y3))
sample您希望配对规则(可能也更大的组?)基于数字?您希望配对规则(可能也更大的组?)基于数字?