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

[John]

Thanks, Paul. Following your solution,  I got this error message:

Warning message:
In cairo_pdf("test_plot_chinese.pdf") : failed to load cairo DLL

Is there anything else I need to install?

Thanks,

John

2017-10-12 19:24 GMT-07:00 Paul Murrell <paul at stat.auckland.ac.nz>:

> 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)
>>
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>>
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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/
>

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