Updating ggplot2 code for new version

Question

Since installing the latest version of ggplot2 (0.9.1), I have been getting messages from my old code including:

> warnings()
Warning messages:
1: \'opts\         


        

Answer 1

From Winston's github wiki, the key changes are:

1. theme_xx() functions changed to element_xx()

   theme_segment() incorporated into theme_line()

2. opts() changed to theme()

3. opts(title = "mytitle") changed to labs(title = "mytitle")

4. New features that make programming easier, e.g. ggtitle("mytitle") does the same as #3

Here is a diff of some functions that I updated: