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rpowerpointlatticegrayscalereporters

configure ReporteRs to get grayscale lattice plots

is there a comforable way to get grayscale trellis plots with ReportRs? trellis.device(color=FALSE) seems not to work here

library(ReporteRs)
library(lattice)

trellis.device(color=FALSE) # set grayscale

p <- xyplot(decrease ~ treatment, OrchardSprays, groups = rowpos,
            auto.key =list(space = "right"))

print(p) # ok, grayscale

doc = pptx("Test")
doc = addSlide(doc, "Title and Content")
doc = addPlot(doc, fun = print, x = p)  # not ok, colored
writeDoc(doc, "test.pptx")

here

enter image description here

instead of

enter image description here

Solution

  • it is OK when using trellis.par.set. See below:

    library(ReporteRs)
library(lattice)

p <- xyplot(decrease ~ treatment, OrchardSprays, groups = rowpos,
            auto.key =list(space = "right"))

ltheme <- standard.theme(color = FALSE) 

doc = pptx("Test")
doc = addSlide(doc, "Title and Content")
doc = addPlot(doc, fun = {
  trellis.par.set(ltheme)
  print(p)
}) 
writeDoc(doc, "test.pptx")