R 随机抽取样本
我想偶然选择R 随机抽取样本,r,random,R,Random,我想偶然选择x样本(其中x==2)是我的数据帧df: sample_id no State NLABfather NE001 chr7-42751387-42759372-1n 1n <NA> NE001 chr4-106417821-106429609-3n 3n <NA> NE002 chr28-2568550-2572925-3n 3n
x
样本(其中x==2
)是我的数据帧df
:
sample_id no State NLABfather
NE001 chr7-42751387-42759372-1n 1n <NA>
NE001 chr4-106417821-106429609-3n 3n <NA>
NE002 chr28-2568550-2572925-3n 3n <NA>
NE002 chr23-27707672-27707672-3n 3n <NA>
NE003 chr25-1157646-1170719-1n 1n <NA>
NE003 chr21-20145005-20155775-0n 0n <NA>
多谢各位 子集(df,sample\u id%在%sample(unique(sample\u id),2)中)如何??或者如果没有子集函数,您可以执行以下操作: df[样品(c(1:nrow(df)),2),]
sample_id no State NLABfather
NE001 chr7-42751387-42759372-1n 1n <NA>
NE001 chr4-106417821-106429609-3n 3n <NA>
NE002 chr28-2568550-2572925-3n 3n <NA>
NE002 chr23-27707672-27707672-3n 3n <NA>