(This article was first published on

**Mathew Analytics LLC » R**, and kindly contributed to R-bloggers)Three of Marvel’s longest running comic book series’ are Thor,

Uncanny X-Men, and Fantastic Four. Using data from 2010, I compare

monthly comic book sales for each series. This data only pertains

to monthly issues and not trade paperbacks. Furthermore, the series

Amazing Spider Man was not considered because it was released twice

a month.

ggplot(mydat, aes(Time)) + geom_line(aes(y = Sold, colour = "Thor"), size = 1) + geom_line(aes(y = Sold.1, colour = "Uncanny X-Men"), size = 1) + geom_line(aes(y = Sold.2, colour = "Fantastic Four"), size = 1) + opts(title = "Uncanny X-Men vs. Thor vs. Fanastic Four (2010)") + opts(plot.title = theme_text(size = 12, face = "bold")) + ylim(c(20000,90000)) + xlab("") + ylab("") + opts(axis.text.y = theme_text(family = "sans", face = "bold", size = 8)) + opts(axis.text.x = theme_text(family = "sans", face = "bold", size = 8)) + opts(plot.margin = unit(c(0.3, 0.3, 0.3, 0.1), "lines")) + scale_colour_discrete('Comic Book') + opts(legend.position = c(0.8, 0.8))

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