Remove colored border around ggplot

Question

I am adding ggplots to viewports. Both ggplot and viewport has the same background colour. My problem is that I hav

Answer 1

It's the argument colour = NA in theme(plot.backround = ... ) you are looking for.

Pie_chart <- ggplot(df , aes(x = "", y = prop_1, fill = rank) ) +
  geom_bar(stat="identity", width=2) +
  coord_polar("y", start = 0) + 
  labs(x = NULL, y = NULL, fill = NULL, title = "") + 
  theme(axis.line = element_blank(), axis.text = element_blank(), axis.ticks = element_blank(), legend.position="none")+
  theme(plot.margin = unit(c(0.0, 0.0, 0.0, 0.0), "cm"),
        plot.background = element_rect(fill = "blue", 
                                       colour = NA), # here it is
        panel.background = element_rect(fill = "blue"))

...