我正在使用knitr with plots。我想将其中一个旋转90度。例如:
\documentclass{article}
\begin{document}
<<cache=TRUE, echo=FALSE, message=FALSE, warning=FALSE, comment=NA, eval=TRUE, results=asis>>=
library("ggplot2")
library("gridExtra")
func <- function(data,x,y) {
p1 <- ggplot(data.frame(data), aes(x = x, y = y)) + geom_point()
p2 <- ggplot(data.frame(data), aes(x = x, y = y)) + geom_point()
p3 <- ggplot(data.frame(data), aes(x = x, y = y)) + geom_point()
p4 <- ggplot(data.frame(data), aes(x = x, y = y)) + geom_point()
grid.newpage()
pushViewport(viewport(width = .9, height = .9,layout = grid.layout(nrow=2, ncol=2)))
print(p1,vp = viewport(layout.pos.row = 1, layout.pos.col = 1))
print(p2,vp = viewport(layout.pos.row = 2, layout.pos.col = 1))
print(p3,vp = viewport(layout.pos.row = 1, layout.pos.col = 2))
print(p4,vp = viewport(layout.pos.row = 2, layout.pos.col = 2))
grid.newpage()
pushViewport(viewport(width = .8, height = .5,layout = grid.layout(nrow=1, ncol=2)))
print(p1,vp = viewport(layout.pos.row = 1, layout.pos.col = 1))
print(p2,vp = viewport(layout.pos.row = 1, layout.pos.col = 2))
}
x <- runif(20,0,1)
y <- rnorm(20)
test <- cbind(x,y)
func(test,x=test$x,y=test$y)
@
\end{document}
我想将第二页和图表都旋转90度。我知道我可以将它用于一页:
\usepackage{pdflscape}
\begin{landscape}
....
\end{landscape}
但这两个图由grid.newpage()在一个函数中排列。我怎样才能做到这一点?非常感谢!
答案 0 :(得分:12)
我认为您可以在块选项中使用out.extra
:
来自knitr docs:http://yihui.name/knitr/options
out.extra :( NULL;字符)数字的额外选项,例如 LaTeX输出中的out.extra ='angle = 90'将图形旋转90° 度;它可以是任意字符串,例如你可以写多个 图选项中的选项;它也适用于HTML图像(额外的 选项将被写入标签,例如 out.extra = '风格= “显示:块;”')
<<out.extra='angle=90', cache=TRUE, echo=FALSE, message=FALSE, warning=FALSE, comment=NA, eval=TRUE, results='asis'>>=
# ...
@