[R] ggplot interactions

[Robert Lynch]

On Tue, Sep 10, 2013 at 11:33 PM, Robert Lynch <robert.b.lynch at gmail.com>wrote:

> I am sorry to ask what I am sure is a simple question but I am stuck
> trying to figure out how different parts of ggplot2 calls interact
>
> I am plotting using the following code
>
> ggplot(Chem.comp, aes(Course, GRADE)) + geom_boxplot(notch = TRUE,aes(fill
> = COHORT))+
>   labs(y ="Grade Points in class",
>        x = "Chemistry 2 quarter") +
>   ggtitle(expression(atop("Comparison between ISE cohorts and Peers",
> atop(italic("in Chem 2 classes"), ""))))
>   ylim(0,4.3333)+
>   scale_fill_manual(name = "ISE Cohorts &\nComparison groups",
>                     values =
> c("blue","red","blue3","red3","blue4","red4")) +
>   theme(plot.title = element_text(size = 25, face = "bold", colour =
> "black", vjust = -1))+
>   guides(fill = guide_legend(nrow = 3),byrow = TRUE)
>
> which give Rplot.jpeg  which is has the appropriate title, but the colors
> and the wrong are wrong.
>
> if I comment out the ggtitle() and theme(), or just ggtitle() I get
> Rplot01.jpeg which has the right colors but no title and subtitle.  Also
> the legend is out of order.  the first row should read ISE07 CMP07 with 08
> on the second row and 09 the third with a red column and a blue column.
>  Changing byrow = TRUE to bycol = TRUE does not change the plotting of the
> legend nor does byrow=FALSE
>
> I am asking for help with getting the title and sub-title to both show up
> at the same time as the appropriate colors for the different factor levels.
> And to get the legend to render so that the legend looks sort of like
> ISE07  [redbox  ] [bluebox  ] CMP07
> ISE08  [red3box][blue3box]  CMP08
> ISE09  [red4box] [blue4box] CMP09
>
> the exact colors are not important the the vertical
> and horizontal alignment is.
>
> Thanks!
> Robert
>