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Problem displaying PDF data created using R on iOS devices

I am doing some graphics in R. The resulting PDF files do not display properly on iOS devices such as iPhone. For example, here's a ggplot2 drawing created as a PDF:

library(ggplot2)
mpg.eg <- within(mpg[1:74,], {
  model <- reorder(model, cty)
  manufacturer <- reorder(manufacturer, -cty)
})

pdf(file="figures/ios-example.pdf")
p <- qplot(cty, model, data=mpg.eg)
p + facet_grid(manufacturer ~ ., scales="free", space="free") +
  opts(strip.text.y = theme_text())
dev.off()

When viewed on an iPhone, dotted lines are not displayed. See, for example, the resulting pdf if you are on an iOS device.

As far as I understand from reading documents, this is most likely a problem with the limited availability of fonts and the vagaries of rendering PDF on iOS, and not a problem with creating pdfs in R. I thought it was possible to embed fonts in PDF using

embedFonts("figures/ios-example.pdf")

will understand, but it’s not. Is there anything I can do to get around this issue with iOS, except that it is available in a different format?

+5
2

embedFonts PDF PDF.

embedFonts("figures/ios-example.pdf",
           options="-dSubsetFonts=true -dEmbedAllFonts=true")

, "-dPDFSETTINGS=/printer" .

, , iOS, (iPad, OS 4.2.1).

+4

R Dingbats : pdf(..., useDingbats = F)

+4

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