嗨,我是R编程的新手。
我想将数据列表从宽格式更改为长格式,但错误如下:
EA UU AR
0.455 1.106 0.568
1.406 0.710 0.262
1.124 1.406 0.312
更改为:
EA 0.455
EA 1.406
EA 1.124
UU 1.106
UU 0.710
UU 1.406
AR 0.568
AR 0.262
AR 0.312
我使用的代码如下:
files <- list.files(path = ".", pattern = "*.txt", all.files = TRUE, full.names = FALSE, recursive = FALSE)
listy <- lapply(files, read.csv)
melt(listy)
write.table(melt(listy), file = "listofdata.txt", quote = FALSE, sep = " ", row.names = FALSE, col.names = FALSE)
出现的错误是:
No id variables; using all as measure variables
No id variables; using all as measure variables
No id variables; using all as measure variables
No id variables; using all as measure variables
No id variables; using all as measure variables
No id variables; using all as measure variables
感谢您的帮助。
答案 0 :(得分:0)
如果我们使用list
data.frames
,请在每个melt
元素中执行list
。
listN <- lapply(listy, function(x) melt(x))
目前尚不清楚OP是想将输出写入单个文件还是多个文件。
如果是单个文件,rbind
,list
data.frames
为一个文件,然后使用write.csv
dfN <- do.call(rbind, listN)
write.csv(dfN, "dataLong.csv", row.names=FALSE, quote=FALSE)
但是,如果这是单独的文件,那么循环遍历&#39; dfN&#39;的names
。写下来
lapply(names(listN), function(nm) write.csv(listN[[nm]],
paste0(nm, ".csv", row.names=FALSE, quote=FALSE)