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When you choose a log scale, ggplot2 formats the breaks like 10^x. I'd like it to not do that. For example, the code below should display a graph with ticks at 1, 2, 5 etc, not 10^0, 10^0.3, 10^0.69 etc.
library(ggplot2)
dfr <- data.frame(x = 1:100, y = rlnorm(100))
breaks <- as.vector(c(1, 2, 5) %o% 10^(-1:1))
p1 <- ggplot(dfr, aes(x, y)) + geom_point() + scale_y_log10(breaks = breaks)
print(p1)
I guess that adding a formatter argument to scale_y_log10 would do the trick, but I'm not sure what to put in the argument, or where the options might be documented.
689
Changing axis labels To alter the labels on the axis, add the code +labs(y= "y axis name", x = "x axis name") to your line of basic ggplot code. Note: You can also use +labs(title = "Title") which is equivalent to ggtitle .
The scale_x_continuous() and scale_y_continuous() methods can be used to disable scientific notation and convert scientific labels to discrete form.
To change the axis scales on a plot in base R Language, we can use the xlim() and ylim() functions. The xlim() and ylim() functions are convenience functions that set the limit of the x-axis and y-axis respectively.
scale_y_log10(breaks = breaks, labels = breaks should do the trick.
113
As of ggplot2 version 0.9.0, this behavior (formatting the axis labels as 10^0) is no longer the default. The code in the question now gives the desired result.
library(ggplot2)
dfr <- data.frame(x = 1:100, y = rlnorm(100))
breaks <- as.vector(c(1, 2, 5) %o% 10^(-1:1))
p1 <- ggplot(dfr, aes(x, y)) + geom_point() + scale_y_log10(breaks = breaks)
print(p1)
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