Remove ticks / tiny white line from colorbar ggplot2

user_2418532 0
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how to remove that white line from a ggplot2 colourbar?

ggplot(faithfuld, aes(waiting, eruptions)) +
  geom_raster(aes(fill = density)) +
  scale_fill_gradientn(colours = terrain.colors(10))+
theme(legend.key.height=unit(2,"line"))

generates this plot

enter image description here

But if you zoom in the legend, you will see tiny annoying white lines:

enter image description here

How can I remove them? Thanks

ggplot2 legend r
1 Answers

You can set the ticks.colour= within guide_colorbar() by referencing via guides()... here ya go:

# where "plot" = your plot code...
plot + guides(fill=guide_colorbar(ticks.colour = "black"))

enter image description here

And to remove them, set the color to NA:

plot + guides(fill=guide_colorbar(ticks.colour = NA))

enter image description here

user_96647960
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