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ISOweek is a small package which contains functions to substitute the %V and %u formats which are not implemented on Windows. In addition, the package offers functions to convert from standard calender format yyyy-mm-dd to ISO 8601 week format yyyy-Www-d and vice versa. Uwe Block [[alternative HTML vers...

ISOweek is a small package which contains functions to substitute the %V and %u formats which are not implemented on Windows. In addition, the package offers functions to convert from standard calender format yyyy-mm-dd to ISO 8601 week format yyyy-Www-d and vice versa. Uwe Block [[alternative HTML vers...

...##Set the week differently if the date is in the beginning,middle or end of the year Wn<-ifelse( Yn==Y-1, ifelse((jan1.wday==5|(jan1.wday==6 &LY.prev)),53,52), ifelse(Yn==Y+1,1,(date.yday+(7-date.wday)+(jan1.wday-1))/7-(jan1.wday>4)) ) return(list(Year=Yn,ISOWeek=Wn)) } -- Gustaf Rydevik, M.Sci. tel: +46(0)703 051 451 address:Essingetorget 40,112 66 Stockholm, SE skype:gustaf_rydevik

...##Set the week differently if the date is in the beginning,middle or end of the year Wn<-ifelse( Yn==Y-1, ifelse((jan1.wday==5|(jan1.wday==6 &LY.prev)),53,52), ifelse(Yn==Y+1,1,(date.yday+(7-date.wday)+(jan1.wday-1))/7-(jan1.wday>4)) ) return(list(Year=Yn,ISOWeek=Wn)) } -- Gustaf Rydevik, M.Sci. tel: +46(0)703 051 451 address:Essingetorget 40,112 66 Stockholm, SE skype:gustaf_rydevik

Estimados ?C?mo convertir estos datos a semanales? No nos funciona otro script que ya nos hab?an enviado Saludos Jos? ------------ próxima parte ------------ Se ha borrado un adjunto en formato HTML... URL: <https://stat.ethz.ch/pipermail/r-help-es/attachments/20160328/09107262/attachment.html> ------------ próxima parte ------------ A non-text attachment was scrubbed... Name: all_cr.csv

Hi All! I have been messing around with this problem for about a week but to no avail! The following data has been cut down in order to make my question reproducible. The alldat data frame includes 2 columns: 1 date column and 1 factor column (equity names)).

HI Fares, You could try this: dat1<- read.table(text=" date????? donation 3jan2003?? 20235 4jan2003?? 25655 5jan2003?? 225860 6jan2003?? 289658 7jan2003?? 243889 8jan2003?? 244338 9jan2003?? 243889 ",sep="",header=TRUE,stringsAsFactors=FALSE) The post is not very specific as to what you need.? I hope this works for you. library(xts)

Hola a todos. Estoy tratando de asignar el número de semana del año a una serie de fechas y me encuentro con que el paquete lubridate considera como día de inicio de la semana el domingo en lugar del lunes. Lo que se me ha ocurrido es crear una tabla auxiliar de fechas con los campos: 'Fecha desde', 'Fecha hasta' y 'Semana ISO' tal que así: 'Fecha desde', 'Fecha