To align the elements horizontally, try the following code, which specifies legend.direction: (also note the effect of legend.position = 'bottom') plot + theme(legend.position = "bottom", legend.background = element_rect(color = "black",įill = "grey90", size = 1, linetype = "solid"), legend.direction = "horizontal")įor more options, type ?ggplot2::theme in the R console. To change the background of the legend, you can use legend.background option: plot + theme(legend.position = c(0.9, 0.2), legend.background = element_rect(color = "black",įill = "grey90", size = 1, linetype = "solid")) The bottom-left corner is (0,0) and the top-right corner is (1,1). The first element in legend.position represents X coordinate and the second one represents Y coordinate in the plot. First, let’s install and load the gridExtra package: Install and load gridExtra package install.packages('gridExtra') library ('gridExtra') Next, we need to create two (or more) plots using the ggplot2 package. To move the legend inside the plot, we use theme in which we specify legend.position: plot + theme(legend.position = c(0.9, 0.2)) Alternatively to the patchwork package, we can also use the gridExtra package to draw a grid of ggplot2 plots with a shared legend. So if you use color, shape or alpha, a legend will be available. plot = ggplot(data = dat) + geom_point(aes(x = gdpPercap, y = lifeExp, color = continent)) By default, ggplot2 will automatically build a legend on your chart as soon as a shape feature is mapped to a variable in aes() part of the ggplot() call. I want to add an legend, but I can figure out how to do this This is my code, first I generate a dataframe (MIN, MEAN, MAX) with the while loop, then I Try to plot it, but I want a legend that says blue is min, orange is mean and red is max. # $ continent: Factor w/ 4 levels "Africa","Americas".: 3 3 3 3 3 3 3 3 3 3. I am making a plot in Shiny, based in 3 columns of my dataset. # $ country : Factor w/ 140 levels "Afghanistan".: 1 1 1 1 1 1 1 1 1 1. I use Gapminder data without Oceania here: dat <- lim("")ĭat = droplevels(subset(dat, continent != "Oceania")) Use iris dataframe as example and create new column for horizontal lines data <- iris > groupby.It still works, but I think the behavior has changed slightly. ![]() ![]() However, using the size aesthetic for lines was deprecated in ggplot2 version 3.4.0. A simple example on ggplot2 legend options A simple example on ggplot2 legend options From what I can tell, this is how people have been adding regression lines to their plots.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |