How to adjust title position in ggplot2

Question

Here is the code:

require(ggplot2)
require(grid)
# pdf(\"a.pdf\")
png(\'a.png\')
a <- qplot(date, unemploy, data = economics, geom = \"line\") + opts(title=\'         


        

Answer 1

What you are looking for is theme(plot.title = element_text(hjust = 0)). For example, using the latest version of ggplot2 and theme instead of opts we have

a <- qplot(date, unemploy, data = economics, geom = "line") + ggtitle("A") +
  theme(plot.title = element_text(hjust = 0))

Alternatively, staying with opts

a <- qplot(date, unemploy, data = economics, geom = "line") + 
  opts(title = "A", plot.title = element_text(hjust = 0))