prewind(head)
column row ALARM_DATE day
[1,] "189" "404" "24/01/1990 00:00" " 24"
[2,] "189" "404" "24/01/1990 00:00" " 24"
[3,] "189" "404" "24/01/1990 00:00" " 24"
[4,] "189" "404" "24/01/1990 00:00" " 24"
[5,] "189" "404" "24/01/1990 00:00" " 24"
[6,] "189" "404" "24/01/1990 00:00" " 24"
我要输入的索引来自将要输入的'列','行'和'日期':
tmp.array[column,row,day]
返回风速值。我想输入沿着矩阵每一行的这些值,并返回所有风值的数据框/矩阵。
谢谢。
这里,列,行,'天'是'字符',我们需要先将其转换为数字
ind <- prewind[, c('col', 'row', 'day')]
ind[] <- as.numeric(ind)
tmp.array[ind]