ggplot not showing all x-axis ticks

Question

I'm trying to show all the years on the x-axis using "seq(1999,2003,1)", but for some reason it is not working. How do I show all the years on the x-axis with 1 year intervals? So it looks like 1999, 2000, 2001, 2002, 2003.

col1 <- c(1999, 2000, 2001, 2002, 2003)
col2 <- c(5,4,3,4,3)
col3 <- c(4,3,1,3,5)
df <- data.frame(col1, col2, col3)
dfmelt <- melt(df, id.vars="col1")
ggplot(dfmelt, aes(x = col1, y = value, fill = variable)) +
  geom_col () +
  scale_x_discrete(breaks=(seq(1999,2003,1)), limits = c(1999, 2003))

Running this without scale_x_discrete shows all 5 years, but in my actual data, this is not the case, so I'm wondering if there is something wrong with the way I tried to plot this.

TIA

Answer 1

This can be achieved by using scale_x_continuous

ggplot(dfmelt, aes(x = col1, y = value, fill = variable)) +
  geom_col () +
  scale_x_continuous()