本文介绍了将geom_text中的图例文字颜色与符号匹配的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 29岁程序员,3月因学历无情被辞! 我尝试使用 geom_text 将图例的文本与由因式分解变量生成的文本颜色匹配。这是一个最小的工作示例: pre $ df p1 p1 p1 labels = c(应该是粉红色的,应该是蓝色的)) p1 pre> 我相信它是一个简单的修复。任何建议或参考以前的职位将有所帮助。我没有找到任何具体的东西。 解决方案继上述joran的评论之后,您可以直接编辑grobs。这是一个相当丑陋的代码,所以道歉[使用 grid 命令将会有更加优雅的方式来做到这一点 - 希望有人会发布]。 library(grid) gglabcol< - function(plot1) g #legend grobs gb< - g [[grobs]] [[which(g $ layout $ name ==guide-box)]] l #符号(提取颜色) lg #为图例标签获取grobs lb #将标签颜色改变为符号颜色 for(i in seq_along(lg)){ lb [[i]] $ gp $ col GB [[ grobs]] [[1]] [[ grobs]] [sapply(GB [[ grobs]] [[1]] [[克obs]],函数(i)grepl(guide.label,i))] [[i]] } #覆盖原始图例g [[grobs]] [[其中(g $ layout $ name ==guide-box)]]< - gb 网格。 (g) 隐形(g)} Plot gglabcol(p1) I am trying to color match the text of the legend to the color of text produced by a factored variable using geom_text. Here is a minimal working example:df <- data.frame(a=rnorm(10),b=1:10,c=letters[1:10],d=c("one","two"))p1 <-ggplot(data=df,aes(x=b,y=a))p1 <- p1 + geom_text(aes(label = c, color=d, fontface="bold"))p1 <- p1 + scale_color_hue(name="colors should match",breaks=c("one", "two"), labels=c("should be pink", "should be blue"))p1I am sure its a simple fix. Any suggestions or reference to prior posts would help. I did not find anything specific to this. 解决方案 Following on from joran's comment above, you can edit the grobs directly. This is a rather ugly bit of code so apologies [there will be a much more elegant way to do this using grid commands - and hopefully someone will post].library(grid)gglabcol <- function(plot1) { g <- ggplotGrob(plot1) # legend grobs g.b <- g[["grobs"]][[which(g$layout$name=="guide-box")]] l <- g.b[["grobs"]][[1]][["grobs"]] # get grobs for legend symbols (extract colour) lg <- l[sapply(l, function(i) grepl("GRID.text", i))] # get grobs for legend labels lb <- l[sapply(l, function(i) grepl("guide.label", i))] # get change colour of labels to colour of symbols for(i in seq_along(lg)) { lb[[i]]$gp$col <- lg[[i]]$gp$col g.b[["grobs"]][[1]][["grobs"]][sapply(g.b[["grobs"]][[1]][["grobs"]], function(i) grepl("guide.label", i))][[i]] <- lb[[i]] } # overwrite original legend g[["grobs"]][[which(g$layout$name=="guide-box")]] <- g.b grid.draw(g) invisible(g) }Plotgglabcol(p1) 这篇关于将geom_text中的图例文字颜色与符号匹配的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 上岸,阿里云! 06-05 21:52