我需要类似以下内容的东西,但字符串中每个单词的颜色都不同:
library(grid)
grid.newpage()
pushViewport(viewport(width = unit(5, 'cm'), height = unit(5, 'cm')))
grid.rect()
grid.text(label = 'Hello, World!')
我尝试为每个段创建单个的笔触,然后将它们组合在一起,但是我不知道如何将结果放置在视口的中心:
grid.newpage()
pushViewport(viewport(width = unit(5, 'cm'), height = unit(5, 'cm')))
grid.rect()
grouped_grobs <-
gList(textGrob(label = 'Hello',
x = unit(0.0, 'npc'),
y = unit(0.5, 'npc'),
just = c('left', 'center'),
gp = gpar(col='red')),
textGrob(label = ',',
x = unit(1, 'strwidth', data = 'Hello'),
y = unit(0.5, 'npc'),
just = c('left', 'center'),
gp = gpar(col='black')),
textGrob(label = 'World',
x = unit(1, 'strwidth', data = 'Hello, '),
y = unit(0.5, 'npc'),
just = c('left', 'center'),
gp = gpar(col='blue')),
textGrob(label = '!',
x = unit(1, 'strwidth', data = 'Hello, World'),
y = unit(0.5, 'npc'),
just = c('left', 'center'),
gp = gpar(col='black')))
grid.draw(grouped_grobs)
我尝试过测量gList的宽度,也尝试过使用gTree,但是不知何故我被困在了这个看似简单的任务上。
在此先感谢您的帮助!
答案 0 :(得分:1)
使用gridtext
程序包可以更轻松地绘制彩色文本。例如
grid.newpage()
pushViewport(viewport(width = unit(5, 'cm'), height = unit(5, 'cm')))
grid.rect()
grid.draw(gridtext::richtext_grob(text = '<span style="color:red">Hello</span>, <span style="color:blue">World</span>!',
x = unit(0.5, 'npc'),
y = unit(0.5, 'npc'),
hjust=.5))
会回来