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I know that when you use par( fig=c( ... ), new=T ), you can create inset graphs. However, I was wondering if it is possible to use ggplot2 library to create 'inset' graphs.
UPDATE 1: I tried using the par() with ggplot2, but it does not work.
UPDATE 2: I found a working solution at ggplot2 GoogleGroups using grid::viewport().
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29.7. An inset plot is a layer which is added to an existing layer in a graph window. The dimensions of the inset layer are reduced so that the "host" layer remains at least partially visible in the graph window.
Click Add Inset Graph or Add Inset with Data button on the Graph toolbar. Then use Scale In tool to show different range of data. Another way (with more steps) of doing this is to select Insert: New Layer(Axes): Bottom-X Left-Y to add a second layer.
The optional inset argument specifies how far the legend is inset from the plot margins. If a single value is given, it is used for both margins; if two values are given, the first is used for x - distance, the second for y -distance.
Section 8.4 of the book explains how to do this. The trick is to use the grid package's viewports.
#Any old plot a_plot <- ggplot(cars, aes(speed, dist)) + geom_line() #A viewport taking up a fraction of the plot area vp <- viewport(width = 0.4, height = 0.4, x = 0.8, y = 0.2) #Just draw the plot twice png("test.png") print(a_plot) print(a_plot, vp = vp) dev.off() If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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