Help on all the ggplot functions can be found at the The master ggplot help site.Ī useful cheat sheet on commonly used functions can be downloaded here.Ĭhang, W (2012) R Graphics cookbook. legend, colors, axis limits, scale transformation (log, sqrt), axis ticks and plot orientation. statreglineequation() Add Regression Line Equation and R-Square to a GGPLOT. To further customise the aesthetics of the graph, including colour and formatting, see our other ggplot help pages: Add Correlation Coefficients with P-values to a Scatter Plot. Print(IrisPlot + myblanktheme + labs(title = "Petal and sepal \nlength of iris", y = "Petal length (cm)", x = "Sepal length (cm)")) Legend.text = element_text(face = "italic", colour = "steelblue4", family = "Helvetica"),Īxis.title = element_text(family = "Helvetica", size = (10), colour = "steelblue4"), Plot.title = element_text(family = "Helvetica", face = "bold", size = (15)), The following code would remove the legend title and axis text. To do this you use the code = element_blank(), remembering those open and closed brackets. For example, size = (3).Īnother option is to remove the text from the plot entirely. Remember to include “” before and after the colour name. Add a legend to a ggplot2 scatter plot including additional lines Asked 7 years, 6 months ago Modified 7 years, 6 months ago Viewed 5k times Part of R Language Collective 1 I would like to add a legend to a ggplot2 scatter graph which distinguishes between a regression line and a separate line I've added. the colour can be changed to any of the colours listed here. the type of emphasis, with options including bold, italic and “alic”. Examples of fonts include: “Palatino”, “Helvetica”, “Courier”, “Times”. The font, colour, size and emphasis of any of these labels can be altered by arguments within element_text(your format). legend categories - legend.text = element_text() Example 1: Add Shared Legend to ggplot2 Plots Using patchwork Package Example 1 explains how to merge multiple ggplot2 legends using the patchwork package.Where “title type” specifies which particular text you want to edit. ggplot: Add second legend to plot with two dataframes. The basic format is: mytheme <- theme(title type = element_text(your formats)) To create a scatter plot with a legend one may use a loop and create one scatter plot per item to appear in the legend and set the label accordingly. Add a legend to a ggplot2 scatter plot including additional lines. To do this, use the code theme() and customise with element_text() to alter these properties. The font, colour, size and emphasis of your labels and text can all be altered. One Continuous and One Categorical VariableĪltering the text style of your legend, axis or title
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