根据列值r更改行中的值 [英] Change values in row based on a column value r
本文介绍了根据列值r更改行中的值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如果列C中同一行中的值包含值<
假设我的所有列都是数字或整数值。
所以我想要数据框架:
x = data.frame(c(5,9,2),c(3,4,6 ),c(12,9,11))
名称(x)= c(A,B,C)
并用NA替换行2以创建
y = data.frame (c(5,NA,2),c(3,NA,6),c(12,NA,11))
名称(y)= c(A B,C)
谢谢!
解决方案
如何:
x [x $ C< 10,] < - NA
I am new to R with a fairly simple question, I just can't figure out the answer. For my example I will use a data frame with 3 columns, but my actual data set is 139 columns with 10000 rows.
I want to replace all of the values in a given row with NA if the value in the same row in column C contains a value < 10.
Assume that all of my columns are either number or integer values.
so I want to take the data frame:
x=data.frame(c(5,9,2),c(3,4,6),c(12,9,11))
names(x)=c("A","B","C")
and replace row 2 with NA to create
y=data.frame(c(5,"NA",2),c(3,"NA",6),c(12,"NA",11))
names(y)=c("A","B","C")
Thanks!
解决方案
how about:
x[x$C <10 ,] <- NA
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