从日期中提取月份并将其转换为单词中的月份

Question

I have obtained the date like obtaining this "2018-05-31". Now, I want to create a new columnn which would be the month extracted, 05, and converting it to words "May". How could I do it?

df$Fecha<-as.Date(df$Fecha)
df$Fecha
[1] "2020-02-01" "2020-01-01" "2020-02-01" "2020-02-01"

df$Mes <- df$Fecha(Month = format(as.Date(df$Fecha), '%b'))
df$Mes

I get an error

Answer 1

We can use format after converting to Date class.

df1 <- data.frame(Month = format(as.Date(str1), '%b'))
df1
#  Month
#1   May

---

If it is to create a new column in an already existing dataset

df$Mes <- format(as.Date(df$Fecha), '%b')

If we need the full name, change the %b to %B

data

str1 <- "2018-05-31"