This question already has answers here: How to add a legend to ggplot in R? (1 answer) Add legend to ggplot2 line plot (4 answers) Closed last month. library(tidyverse) df1 <- tibble(wt=4, mpg=25) df2 <- tibble(wt=2, mpg=15) ggplot(mtcars, aes(x=wt, y=mpg)) + geom_point() + geom_point(data=df1, aes(x=wt, y=mpg), color=”red”, size=3) + geom_point(data=df2, aes(x=wt, y=mpg), color=”blue”, size=3) Is […]

I have a dot graph where points defined by colours on a continuous colour scale based on the value of one variable, bout I also want to graph grouped smooth lines over the top of this dot graph. The groups for the smooth lines will be discretized versions of the variable that the continuous dot graph is based on.

I’m making two volcano plots using ggplot and the parameters in both of them are the same except for the legend. However, the font size of the legends is different between the two plots. How can I fix this?

I need to graph a flipped histogram (i.e. count on x-axis, values on y) but with the count ascending to the left rather than the right

I am trying to create a line plot and have one of the groups use a dotted line type. Unfortunately the whiskers can be hard to see with dotted lines so I am trying to add solid lines for the whiskers.

Closed last month.

How can I use the same “X axis scale” for multiple plots using R and ggplot2?
i.e. given the following two plots, I want the second one to be twice as wide as the first one, as it has twice as many bars (limits can be different, but “unit step” should have same real length, as well as bar size):

I’ve been trying for a while now to put the horizontal axis title on top of the chart after using coord_flip() in ggplot2, but without any success.

This question already has an answer here: ggplot2 does not appear to work when inside a function R [duplicate] (1 answer) Closed 2 years ago. If I run the following code, everything works as expected and the plot shows on the right panel in RStudio: plot(x=iris$Sepal.Width, y=iris$Sepal.Length) However, if instead I call the plot from […]

This question already has an answer here: ggplot2 does not appear to work when inside a function R [duplicate] (1 answer) Closed 2 years ago. If I run the following code, everything works as expected and the plot shows on the right panel in RStudio: plot(x=iris$Sepal.Width, y=iris$Sepal.Length) However, if instead I call the plot from […]