How to use r manipulate date string
Jan 1, 2015 16:59 · 59 words · 1 minute read
Convert string to Date object
To convert string to Date object, we can use as.Date
function.
The default format is 2015-01-01%Y-%m-%d
or 2015/01/01%Y/%m/%d
.
as.Data("dateString")
filter data by year and moth
subset(data, format.Date(dateColumn, "%m") == "12" & format.Date(dateColumn, "%y") == "13")`
The data in the date column can be string or Date object. If using string, it should be %Y-%m-%d
/%Y/%m/%d
format.