Changing font size and direction of axes text in ggplot2. 0 votes . 1 view. asked Jul 5, ... How do I (a) change the font size for my axis text and (b) change the orientation of the text so that the text is perpendicular to the axis? ... Change size of axes title and labels in ggplot2. asked Jul 17, 2019 in R Programming by Ajinkya757 (5.3k ... This can be done by using theme argument in ggplot2. Example > df <- data.frame(x=gl(10, 1, 10, labels=paste("long text label ", letters[1:10])), y=rnorm(10,0.5)) > df x y 1 long text label a -0.8080940 2 long text label b 0.2164785 3 long text label c 0.4694148 4 long text label d 0.7878956 5 long text label e -0.1836776 6 long text label f 0.7916155 7 long text label g 1.3170755 8 long text ... Change axis tick mark labels. The functions theme() and element_text() are used to set the font size, color and face of axis tick mark labels. You can also specify the argument angle in the function element_text() to rotate the tick
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