[R] Reformatting data into data frame and plotting it in ggplot2

[Tribo Laboy]

For some reason I get the following error:

"Error: could not find function "scale_colour_manual"

so I couldn't make the plots.

Otherwise I completely agree that color is good way to summarize in
the key several different models and operations performed on the same
data (it is always a trick to find colors that print clearly in black
and white). But in my case I just want to plot the raw data and to
distinguish it in the key.

Regards.