Jun 24, 2021 · In this article, we are going to see how to combine a bar chart and a line chart in R Programming Language using ggplot2. Dataset in use: Courses Sold vs Students Enrolled. In order to plot a bar plot in R, we use the function geom_bar ( ). stat : Set the stat parameter to identify the mode. fill : Represents color inside the bars.

Jul 31, 2016 · Bar charts use a categorical x-axis. To overlay a line you will need to convert the axis to be numeric. ggplot(df_all) + geom_bar(aes(x = grp, weight = bar_heights)) + geom_line(aes(x = as.numeric(grp), y = line_y))

Sep 20, 2020 · I am trying to plot line graph over the bar plot with double-y-axis using ggplot2. Below is the example data and code for bar chart: library(ggplot2) data <- data.frame("groups" = c('A...

Apr 3, 2020 · I am trying to get a plot as A bar plot for count over lapped with a line plot for Odds Ratio with CI bars. I tried to plot in ggplot2 using following code: geom_bar(aes(x=Feat, y=Count),stat="identity", fill = "steelblue") +. geom_line(aes(x=Feat, y=OR*max(feat$Count)),stat="identity", group = 1) +. geom_point(aes(x=Feat, y=OR*max(feat$Count))) +.

To get a bar graph of counts, don’t map a variable to y, and use stat="bin" (which is the default) instead of stat="identity": For line graphs, the data points must be grouped so that it knows which points to connect. In this case, it is simple – all points should be connected, so group=1.

Mar 9, 2025 · In this post, we’ll learn how to use ggplot2 to combine a bar chart and a line graph in one plot, making it easier to compare data with different units. I downloaded data for the SCHD ETF from Yahoo Finance and filtered it to cover the period from January 1, …

Example 1: Add Line to ggplot2 Barplot Example 1 illustrates how to overlay a line on top of a ggplot2 barchart. To achieve this, we can apply the geom_line function as shown below.

We will use ggplot() to draw such a combined chart. Before going any further, if you are not so familiar with line plots and vertical bar plots, have a quick look at these pages: Creating a line plot. The dataframe for this tutorial is as follows: # structure of the dataframe .

Mar 10, 2022 · I am trying to make a plot with two y-axis (1 for count, 1 for concentration) and the x-axis is as.factor(date). I want a stacked-bar plot for the species counts with color associated to each species, a line that shows the changing concentration, and facet_wrap( ~ location)

Jul 2, 2024 · Adding horizontal lines to a bar chart in ggplot2 is a useful way to highlight specific values such as averages, thresholds, or any other reference lines. This article provides a comprehensive guide on how to add horizontal lines above bar charts in R using ggplot2, along with detailed examples and explanations. ggplot2 Basics