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Editorial Team
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Asked: 2026-05-27T13:46:16+00:00

The following commands library(ggplot2) ggplot(PlantGrowth, aes(x=group, y=weight)) + geom_boxplot() produce this graph. . I

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The following commands

library(ggplot2)
ggplot(PlantGrowth, aes(x=group, y=weight)) + geom_boxplot()

produce this graph.

this graph. I wonder how to get xlabels as ctrl, trt_1 and trt_2, here 1 and 2 are in subscripts. As I need to have the graphs in png format so I’m avoiding tikzDevice and pgfSweave. Thanks in advance for your help.

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1 Answer

  1. Editorial Team

    here is an example:

    ggplot(PlantGrowth, aes(x=group, y=weight)) + geom_boxplot() + 
  scale_x_discrete(breaks = unique(PlantGrowth$group), labels = c(expression(ctrl), expression(trt[1]), expression(trt[2])))

    enter image description here

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