[R] [FORGED] can't print ggplot with Chinese characters to pdf files

[Paul Murrell]

Hi

Instead of ...

ggsave("test_plot_chinese.pdf", m2)

... try ...

cairo_pdf("test_plot_chinese.pdf")
print(m2)
dev.off()

Paul

On 13/10/17 02:12, John wrote:
> I install the Chinese font "Kaiti TC" on my mac, but I can't print the
> figures to pdf file by "marrangeGrob" command, which is in the package
> "gridExtra". Error message after I type "ggsave(......)" (last line of the
> program):
> 
> "Saving 7.47 x 5.15 in image
> Error in grid.Call.graphics(L_text, as.graphicsAnnot(x$label), x$x, x$y,  :
>    invalid font type
> In addition: There were 50 or more warnings (use warnings() to see the
> first 50)"
> 
> How can I install the font so that I can see the figures on the pdf files?
> Some information that may be useful:
> (1) If I use the English ggtitle, there is no problem at all. The pdf file
> present the figures perfectly.
> (2) If I use Chinese title, I can still see the figures p1 and p2 on
> Studio, but I can't see it at the pdf file produced by ggsave. It gives an
> error message
> 
> 
> 
> rm(list=ls())
> library(ggplot2)
> library(gridExtra)
> df1<-data.frame(x=1:2, y=3:4, z=5:6)
> #p1<-ggplot(df1, aes(x=x, y=y))+geom_line()+ggtitle("test1")
> #p2<-ggplot(df1, aes(x=x, y=y))+geom_line()+ggtitle("test2")
> p1<-ggplot(df1, aes(x=x, y=y))+geom_line()+ggtitle("測試")  #Chinese title
> p2<-ggplot(df1, aes(x=x, y=y))+geom_line()+ggtitle("中文")  #Chinese title
> p1<-p1+theme(text = element_text(family = "Kaiti TC"))
> p2<-p2+theme(text = element_text(family = "Kaiti TC"))
> 
> p<-array(list(NA), dim=2)
> p[[1]]<-p1
> p[[2]]<-p2
> p_series <- lapply(1:(length(p)), function(.x) p[.x][[1]])
> m2 <- marrangeGrob(p_series, nrow=2, ncol=1)
> ggsave("test_plot_chinese.pdf", m2)
> 
> 	[[alternative HTML version deleted]]
> 
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-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/