View source: R/standalone-guess_has_R4.1_features.R
guess_has_R4.1_features | R Documentation |
guess_has_R4.1_features()
guesses whether "active" graphics device supports
the grid graphics features introduced in R v4.1. If it guesses it does
it returns TRUE
else FALSE
.
guess_has_R4.1_features(
features = c("clippingPaths", "gradients", "masks", "patterns")
)
features |
Character vector of features to guess support for.
Will return
|
TRUE
if we guess all features
are supported else FALSE
To avoid taking a dependency on gridpattern
you may copy the source of guess_has_R4.1_features()
into your own package under the permissive MIT No Attribution (MIT-0) license. Either use
usethis::use_standalone("trevorld/gridpattern", "standalone-guess_has_R4.1_features.R")
or copy the file standalone-guess_has_R4.1_features.R
into your R
directory and
add grDevices
and utils
to the Imports
of your DESCRIPTION
file.
https://www.stat.auckland.ac.nz/~paul/Reports/GraphicsEngine/definitions/definitions.html for more info about the new grid graphics features introduced in R v4.1.
# If R version (weakly) greater than 4.1 should be TRUE
pdf(tempfile(fileext = ".pdf"))
print(guess_has_R4.1_features())
invisible(dev.off())
# Should be FALSE
postscript(tempfile(fileext = ".ps"))
print(guess_has_R4.1_features())
invisible(dev.off())
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