Graphics Reference
In-Depth Information
Figure 10-3. Left: legend in bottom-right corner; right: legend in top-right corner.
And this will place the top-right corner of the legend in the top-right corner of the graphing area,
as in the graph on the right in Figure 10-3 :
p + theme(legend.position = c( 1 , 1 ), legend.justification = c( 1 , 1 ))
When placing the legend inside of the graphing area, it may be helpful to add an opaque border
to set it apart ( Figure 10-4 , left):
p + theme(legend.position = c( .85 , .2 )) +
theme(legend.background = element_rect(fill = "white" , colour = "black" ))
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