from r cookbook, where bp is your ggplot: Remove legend for a particular aesthetic (fill): bp + guides(fill=”none”) It can also be done when specifying the scale: bp + scale_fill_discrete(guide=”none”) This removes all legends: bp + theme(legend.position=”none”)
There are two closely-related questions, and an answer for each. 1. An image will be generated in future in my script, how do I save it to disk? To save a plot, you need to do the following: Open a device, using png(), bmp(), pdf() or similar Plot your model Close the device using dev.off() … Read more
From the release news of ggplot 2.2.0: “The main plot title is now left-aligned to better work better with a subtitle”. See also the plot.title argument in ?theme: “left-aligned by default”. As pointed out by @J_F, you may add theme(plot.title = element_text(hjust = 0.5)) to center the title. ggplot() + ggtitle(“Default in 2.2.0 is left-aligned”) … Read more
For a small number of variables, you can build the plot manually yourself: ggplot(test_data, aes(date)) + geom_line(aes(y = var0, colour = “var0”)) + geom_line(aes(y = var1, colour = “var1”))
@GavinSimpson: reorder is a powerful and effective solution for this: ggplot(theTable, aes(x=reorder(Position,Position, function(x)-length(x)))) + geom_bar()
Basically you have two options scale_x_continuous(limits = c(-5000, 5000)) or coord_cartesian(xlim = c(-5000, 5000)) Where the first removes all data points outside the given range and the second only adjusts the visible area. In most cases you would not see the difference, but if you fit anything to the data it would probably change the … Read more
Any ggplots side-by-side (or n plots on a grid) The function grid.arrange() in the gridExtra package will combine multiple plots; this is how you put two side by side. require(gridExtra) plot1 <- qplot(1) plot2 <- qplot(1) grid.arrange(plot1, plot2, ncol=2) This is useful when the two plots are not based on the same data, for example … Read more
This should work: p <- ggplot(df, aes(x=rating, fill=cond)) + geom_density(alpha=.3) + xlab(“NEW RATING TITLE”) + ylab(“NEW DENSITY TITLE”) p <- p + guides(fill=guide_legend(title=”New Legend Title”)) (or alternatively) p + scale_fill_discrete(name = “New Legend Title”)
lines() or points() will add to the existing graph, but will not create a new window. So you’d need to do plot(x,y1,type=”l”,col=”red”) lines(x,y2,col=”green”)
You might want to consider the following package: Package xkcd: Plotting ggplot2 graphics in a XKCD style. library(xkcd) vignette(“xkcd-intro”) Some examples (Scatterplots, Bar Charts): Scatterplot: Bar Chart: