Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

116 lines (106 sloc) 3.005 kb
bolus <- function(x) UseMethod("bolus")
bolus.proto <- function(x) x$bolus()
# Create a bolus object
# A bolus is a list suitable for digesting.
#
# Most ggplot objects have components that should be hashed when creating
# a digest (especially since most ggplot objects are proto objects and
# are also self-documenting). The bolus methods ensure that only appropriate
# components are digested.
#
# @alias bolus
# @alias bolus.proto
# @alias digest.ggplot
# @alias digest.proto
# @keyword internal
#X hash_tests <- list(
#X list(
#X ggplot() + scale_x_continuous() + scale_y_continuous(),
#X ggplot() + scale_y_continuous() + scale_x_continuous()
#X ),
#X list(
#X qplot(mpg, wt, data=mtcars, na.rm = FALSE),
#X ggplot(mtcars, aes(y=wt, x=mpg)) + geom_point()
#X ),
#X list(
#X qplot(mpg, wt, data=mtcars, xlab = "blah"),
#X qplot(mpg, wt, data=mtcars) + scale_x_continuous("blah")
#X )
#X )
#X
#X lapply(hash_tests, function(equal) {
#X hashes <- lapply(equal, digest.ggplot)
#X
#X if (length(unique(hashes)) != 1) {
#X lapply(equal, function(x) print(str(bolus(x))))
#X stop("Above plots not equal")
#X }
#X })
bolus.ggplot <- function(x, ...) {
with(x, list(
data = digest(data),
mapping = mapping[order(names(mapping))],
layers = sapply(layers, function(x) x$hash()),
scales = scales$hash(),
facet = facet$hash(),
coord = coordinates$hash(),
options = digest(defaults(x$options, theme_get()))
))
}
digest.proto <- function(x, ...) x$hash(, ...)
digest.ggplot <- function(x, ...) {
if (is.null(x)) return()
try_require("digest")
digest(bolus(x), ...)
}
TopLevel$settings <- function(.) {
mget(setdiff(ls(., all.names=TRUE), c(".that", ".super")), .)
}
Layer$hash <- TopLevel$hash <- function(., ...) {
digest(.$bolus(), ...)
}
Scales$hash <- function(.) {
scales <- sapply(.$.scales, function(x) x$hash())
if (is.character(scales)) scales <- sort(scales)
scales
}
Scales$bolus <- function(.) {
sc <- lapply(.$.scales, function(x) x$bolus())
names(sc) <- sapply(sc, "[[", "input")
sc[order(names(sc))]
}
TopLevel$bolus <- function(.) {
list(
name = .$objname,
settings = .$settings()
)
}
Scale$bolus <- function(.) {
settings <- .$settings()
settings$.tr <- settings$.tr.$objname
settings$.input <- NULL
settings$.output <- NULL
list(
name = .$objname,
input = .$.input,
output = .$.output,
settings = compact(settings)
)
}
Layer$bolus <- function(.) {
params <- c(.$geom_params, .$stat_params)
params <- params[!duplicated(params)]
if (!is.null(params) && length(params) > 1) params <- params[order(names(params))]
mapping <- .$mapping
if (!is.null(mapping)) mapping <- mapping[order(names(mapping))]
list(
geom = .$geom$objname,
stat = .$stat$objname,
pos = .$position$objname,
pos_parms = .$position$settings(),
data = .$data,
mapping = mapping,
params = params,
legend = .$legend
)
}
Jump to Line
Something went wrong with that request. Please try again.