Removing legends from a built-in plotting function in library

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So I am using a library in R called DVHmetrics. The idea behind it is that you can take some data from a specific file, exported by another program, and pretty much read it and manipulate the data within. This also mean means it is not raw data I am working with here.

In this library there is a function called showDVH, which takes some of the data in the file you read and plot it. By looking at the code behind the library this plotting is done through ggplot. However, when using the function that does this plotting there is no option for showing/not showing legends. And the thing is I really need to remove the legends.

So is there a way where this is possible when it is not directly implemented in the function itself ?

ggplot2 r
1 Answers

The package function returns list of ggplot objects, so we need to say "no legend" for each ggplot object in a list separately, see below example:

library(DVHmetrics)
library(ggplot2)

# for one patient
x <- showDVH(dataMZ, patID = "P123", show = FALSE)
x <- x$P123 + theme(legend.position = "none")
# plot
x

# for all patients
x <- showDVH(dataMZ, show = FALSE)
x <- lapply(x, function(i) i + theme(legend.position = "none"))
# plot
x
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