Date
Hi Val,
Try this:
dat=read.csv("myfile.csv",stringsAsFactors=FALSE)
However, the apparently silent conversion of format is a mystery to
me. The only time I have struck something like this was when exporting
dates from Excel some years ago, and there was a silent conversion to
mm/dd/yyyy format if the dates were in dd/mm/yyyy format. Could you
post some sample data?
Jim
On Fri, Nov 5, 2021 at 8:44 AM Val <valkremk at gmail.com> wrote:
IHi All, l,
I am reading a csv file and one of the columns is named as "mydate"
with this form, 2019-09-16.
I am reading this file as
dat=read.csv("myfile.csv")
the structure of the data looks like as follow
str(dat)
mydate : chr "09/16/2019" "02/21/2021" "02/22/2021" "10/11/2017" ...
Please note the format has changed from YYYY-mm-dd to mm/dd/YYYY
When I tried to change this as a Date using
as.Date(as.Date(mydate, format="%m/%d/%Y" )
I am getting this error message
Error in charToDate(x) :
characte string is not in a standard unambiguous format
My question is,
1. how can I read the file as it is (i.e., without changing the date format) ?
2. why does R change the date format?
Thank you,
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