是否可以将自定义图片用作条形图中的条形? [英] Is it possible to use a custom picture as the bars in a bar chart?

问题描述

我有想要绘制的数据，并且我不想显示y轴值的常规垂直条，而是选择其中一种:

I have data that I'd like to plot, and instead of regular vertical bars showing the value of the y-axis, I'd like to either:

1)用图片(例如圣诞节装饰图案)填充酒吧

1) fill up the bar with a picture (a Christmas ornament pattern, for example)

2)使用自定义图片(例如蜡烛)作为栏

2) use a custom picture (such as a candle, let's say) as the bar

这可能吗?我首选的平台是R，Excel或Tableau public.

is this possible? My preferred platform is either R, Excel, or Tableau public.

推荐答案

您可以尝试

library(jpeg)
library(grid)
library(lattice)

#download Chrismas tree image which will be used as bar in barplot
download.file("https://upload.wikimedia.org/wikipedia/commons/f/fa/Poinsettia_tree.jpg", "Poinsettia_tree.jpg")
chrismas_tree <- readJPEG("Poinsettia_tree.jpg")

#sample data for barplot
counts <- table(mtcars$gear)

#barplot
barchart(counts, origin=0, col="white",horizontal = FALSE,
             panel=function(x, y, ...) {
             panel.barchart(x, y, ...)
             grid.raster(chrismas_tree, y=0, height=y, x=x,
                               default.units="native", 
                               just="bottom",
                               width=unit(0.2,"npc"))
             },
         ylab = "Counts",
         xlab = "Gear",
         main = "Gear counts plot (mtcars)")

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