我正在寻找一个建议:我正在尝试按变量值重新排序/分组数据框。
例如,转换本机数据帧VARS
这样的事情:
到目前为止,我已经使用cbind / rbind尝试了for-loops
,具体取决于数据的组织,聚合,应用等等。但是总会有一些皱纹阻止方法的运行。
我感谢任何帮助!
答案 0 :(得分:1)
首先,我想指出如何提供一个usefule示例,以及使用dput
的原始数据将有很长的路要走,以获得反馈。那说:
For the dataset you showed:
A <- structure(list(Var_Typer = c("cnt", "Cont", "cnt", "cnt", "fact",
"fact", "Char", "Char", "Cont"), R_FIELD = c("Gender", "Age",
"Activation", "WakeUpStroke", "ArMode", "PreHospActiv", "EMTag",
"EMTdx", "EMTlams")), .Names = c("Var_Typer", "R_FIELD"), row.names = c(NA,
-9L), class = "data.frame")
> head(A)
Var_Typer R_FIELD
1 cnt Gender
2 Cont Age
3 cnt Activation
4 cnt WakeUpStroke
5 fact ArMode
6 fact PreHospActiv
B <- apply(
dcast(A, Var_Typer ~ R_FIELD, value.var = 'R_FIELD'), 1, function(i){
ndf <- as.data.frame(rbind(i[complete.cases(i)]))
colnames(ndf) <- c('Class',1:(length(ndf)-1))
ndf
}) %>% rbind.pages %>% (function(x){
x[is.na(x)] <- "..."
x
})
Class 1 2 3
1 Char EMTag EMTdx ...
2 cnt Activation Gender WakeUpStroke
3 Cont Age EMTlams ...
4 fact ArMode PreHospActiv ...