as.Date(ww-yyyy) in R
I have an Excel-file with a lot of dates in the format "ww-yyyy". When it is loaded into R it is seen as "42370" (for instance).
I need to extract the week and year for each data point x.
I have tried as.POSIXct,as.POSIXlt, as.Date(x, format="%w-%y,origin = 1899-12-30).
as.Date(42370,format =%w%y) gives the output "2023-11-14" which should've been week 53 in 2015
r date as.date
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
add a comment |
I have an Excel-file with a lot of dates in the format "ww-yyyy". When it is loaded into R it is seen as "42370" (for instance).
I need to extract the week and year for each data point x.
I have tried as.POSIXct,as.POSIXlt, as.Date(x, format="%w-%y,origin = 1899-12-30).
as.Date(42370,format =%w%y) gives the output "2023-11-14" which should've been week 53 in 2015
r date as.date
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
how did you read the excel file into R? It might be easier to read the column as text and convert from there.
– iod
Nov 14 '18 at 14:35
1
Convert to date and then format to desire format like with this:format(as.Date(42370, origin = "1899-12-30"), "%W-%Y")
– Dave2e
Nov 14 '18 at 14:51
add a comment |
I have an Excel-file with a lot of dates in the format "ww-yyyy". When it is loaded into R it is seen as "42370" (for instance).
I need to extract the week and year for each data point x.
I have tried as.POSIXct,as.POSIXlt, as.Date(x, format="%w-%y,origin = 1899-12-30).
as.Date(42370,format =%w%y) gives the output "2023-11-14" which should've been week 53 in 2015
r date as.date
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
I have an Excel-file with a lot of dates in the format "ww-yyyy". When it is loaded into R it is seen as "42370" (for instance).
I need to extract the week and year for each data point x.
I have tried as.POSIXct,as.POSIXlt, as.Date(x, format="%w-%y,origin = 1899-12-30).
as.Date(42370,format =%w%y) gives the output "2023-11-14" which should've been week 53 in 2015
r date as.date
r date as.date
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
asked Nov 14 '18 at 14:24
CutePoisonCutePoison
10611
10611
how did you read the excel file into R? It might be easier to read the column as text and convert from there.
– iod
Nov 14 '18 at 14:35
1
Convert to date and then format to desire format like with this:format(as.Date(42370, origin = "1899-12-30"), "%W-%Y")
– Dave2e
Nov 14 '18 at 14:51
add a comment |
how did you read the excel file into R? It might be easier to read the column as text and convert from there.
– iod
Nov 14 '18 at 14:35
1
Convert to date and then format to desire format like with this:format(as.Date(42370, origin = "1899-12-30"), "%W-%Y")
– Dave2e
Nov 14 '18 at 14:51
how did you read the excel file into R? It might be easier to read the column as text and convert from there.
– iod
Nov 14 '18 at 14:35
how did you read the excel file into R? It might be easier to read the column as text and convert from there.
– iod
Nov 14 '18 at 14:35
1
1
Convert to date and then format to desire format like with this:
format(as.Date(42370, origin = "1899-12-30"), "%W-%Y")– Dave2e
Nov 14 '18 at 14:51
Convert to date and then format to desire format like with this:
format(as.Date(42370, origin = "1899-12-30"), "%W-%Y")– Dave2e
Nov 14 '18 at 14:51
add a comment |
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how did you read the excel file into R? It might be easier to read the column as text and convert from there.
– iod
Nov 14 '18 at 14:35
1
Convert to date and then format to desire format like with this:
format(as.Date(42370, origin = "1899-12-30"), "%W-%Y")– Dave2e
Nov 14 '18 at 14:51