使用geom_histogram從ggplot2圖例中刪除斜槓

Question

如何從圖例中刪除斜槓？謝謝。

ggplot(data, aes(y, fill = factor(x))) + 
geom_histogram(colour = "black", position = 'identity') + 
theme(legend.position="top", legend.title=element_blank()) + 
scale_fill_manual(values = c(rgb(11,61,145, maxColorValue=255), "white",   rgb(252,61,33, maxColorValue=255))) + 
scale_y_continuous("Count") + 
scale_x_continuous("Age") + 
theme(axis.text.x = element_text(face="bold", color="#252525", size=12), 
    axis.text.y = element_text(face="bold", color="#252525", size=12)) 

Answer 1

這個工作適合你嗎？

library(ggplot2) 
set.seed(6667) 
diamonds_small <- diamonds[sample(nrow(diamonds), 1000), ] 
ggplot(diamonds_small, aes(price, fill = cut)) + 
     geom_density(alpha = 0.2) + 
     guides(fill = guide_legend(override.aes = list(colour = NULL))) 

使用例如從http://docs.ggplot2.org/current/geom_histogram.html