How to make scale_x_date week start with Sunday

ggplot2, r

Solution

One way would be to use function `seq()` and provide your own break points starting with first Sunday (used minimal value of `week.start`) and set `by="week"`.

ggplot(data = data.set,aes(x = week.start,y = overtime.avg)) +
  geom_line() +
  geom_point() +
  scale_x_date(breaks = seq(min(data.set$week.start),max(data.set$week.start),by="week"),
               labels = date_format(format = "%Y-%m-%d"))

Problem

I'm creating a weekly time series chart, and week should start with Sunday. When I specify scale_x_date(breaks = date_breaks('1 week')) grid line and labels start on Monday, so results looks slightly off. How can I force ggplot scale_x_date week to start on Sunday This is example of my code ``` library(ggplot2) library(scales) data.set <- structure(list(week.start = structure(c(15732, 15739, 15746, 15753, 15760, 15767, 15774, 15781, 15788, 15795, 15802, 15809 ), class = "Date"), overtime.avg = c(2.8, 2.85666666666667, 2.18333333333333, 2.44666666666667, 2.04833333333333, 2.45833333333333, 2.12833333333333, 1.81666666666667, 1.82166666666667, 1.54333333333333, 2.09166666666667, 0.970833333333333)), .Names = c("week.start", "overtime.avg"), row.names = 29733:29744, class = "data.frame") ggplot(data = data.set, aes(x = week.start, y = overtime.avg)) + geom_line() + geom_point() + scale_x_date(breaks = date_breaks("1 week"), labels = date_format(format = "%Y-%m-%d")) ```

Original source