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Cannot change color of gridlines with `panel.grid` #2352

eliocamp opened this Issue Nov 24, 2017 · 0 comments


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eliocamp commented Nov 24, 2017

The panel.grid argument seems to ignore the color argument (and probably arrow) from element_line()
Minimal example:


g <- ggplot(cars, aes(speed, dist)) +

new_line <- element_line(color = "blue", 
                         size = 2,
                         linetype = 2,
                         lineend = "round", 
                         arrow = grid::arrow())

Changes all attributes, but not color.

g + theme(panel.grid = new_line)

Going higher up the inhertance tree doesn't work

g + theme(line = new_line)

But going down does.

g + theme(panel.grid.minor = new_line)

@hadley hadley closed this in caca650 Nov 30, 2017

@lock lock bot locked as resolved and limited conversation to collaborators Jun 18, 2018

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