Pie charts are a very bad way of displaying information. There are various packages available for creating charts and visualizations in R. One of the more popular packages used today is the ggplot2 package. -----Original Message----- From: "Adam Green" To: "r-help at stat.math.ethz.ch" Sent: 9/4/07 10:21 AM Subject: [R] Pie Chart Labels I am having trouble finding out how to adjust the position of labels on pie charts. Allowed values are "out" (for outside) or "in" (for inside). I would like to either put a count associated with each section of the pie chart or put a percentage that each slice makes up of the pie. (value between -1 and +1). A bar chart or dot chart is a preferable way of displaying this type of data. When the alignment is set to OutsideColumn, the data point labels are aligned in two columns around the pie and their offset is controlled by the DataPointLabelOffset property. Pie chart Source: R/ggpie.R. The radius at which to place the labels in user units. Thanks pie_chart_df_ex <- data.frame("Category" = c("Baseball", "Basket… main indicates the title of the chart. Additionally, the argument width in the function geom_bar() is no longer needed. Create a pie chart. Cleveland (1985), page 264: “Data that can be shown by pie charts always can be shown by a dot chart. This is the return value of floating.pie. These series make use of the OutsideColumn value of the DataPointLabelAlignment property. We first create a data frame containing the values that we want to display in the pie chart. In order to create pie chart subplots, you need to use the domain attribute. clockwise is a logical value indicating if the slices are drawn clockwise or anti clockwise. labels. Greg Snow The best option is to use a bar chart or dot chart instead of a pie chart. x and y position of the center of the pie chart. col indicates the color palette. It is important to note that the X array set the horizontal position whilst the Y array sets the vertical. Subplots. The authors recommend bar or dot plots over pie charts because people are able to judge length more accurately than volume. Pie charts are not recommended in the R documentation, and their features are somewhat limited. radius. In this exercise you'll see the locator() command used to place labels on an R pie chart and notes about making custom labels. For example, x=[0,0.5], y=[0, 0.5] would mean the bottom left position of the plot. The color of the rectangles on which the labels are displayed. A simple Pie chart in R: A very simple pie chart is created using just the input vector and labels. For this example, we’ll use some sample data showing global market share for mobile phone manufacturers. radius indicates the radius of the circle of the pie chart. Pie charts are the classic choice for showing proportions for mutually-exclusive categories. Pie Charts . The pos parameter allows you to specify … The eye is good at judging linear measures and bad at judging relative areas. The default is 1.05. bg. Increase or decrease this value to see the effect. ggpie ... character specifying the position for labels. This is an educational video intended for those new to R which shows the basics on how to create a pie chart in the RGUI or RStudio. ggpie.Rd. Text strings to label each sector. The Pie chart uses BarSeries to represent the "pie slices". Donut chart chart is just a simple pie chart with a hole inside. angles. The only difference between the pie chart code is that we set: x = 2 and xlim = c(0.5, 2.5) to create the hole inside the pie chart. border lab.adjust: numeric value, used to adjust label position when lab.pos = "in". All you need for a pie chart is a series of data representing counts or proportions, together with the corresponding labels. Donut chart. 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