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Add different scoping levels for plotCache

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Winston Chang
2018-03-15 16:37:34 -05:00
parent fc8118c694
commit 0f9346ead5
3 changed files with 55 additions and 26 deletions
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17
man/plotCache.Rd
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@@ -4,14 +4,11 @@
\alias{plotCache}
\title{Disk-based plot cache}
\usage{
plotCache(cacheId, invalidationExpr, width, height, res = 72, plotFunc,
cachePath = file.path(tempdir(), cacheId),
invalidation.env = parent.frame(), invalidation.quoted = FALSE)
plotCache(invalidationExpr, width, height, res = 72, plotFunc,
cachePath = NULL, invalidation.env = parent.frame(),
invalidation.quoted = FALSE, session = getDefaultReactiveDomain())
}
\arguments{
\item{cacheId}{An identifier for this cache; by default, will be incorporated
into the cache directory path.}
\item{invalidationExpr}{Any expression or block of code that accesses any
reactives whose invalidation should cause cache invalidation. This
typically would be an expression that indicates that the source data has
@@ -43,11 +40,11 @@ that is stored in a variable; to do so, it must be quoted with
\description{
Creates a read-through cache for plots. The plotting logic is provided as
plotFunc, a function that can have any number/combination of arguments; the
return value of plotCache is a function that should be used in the place of
plotFunc. Each unique combination of inputs will be cached to disk in the
location specified by cachePath.
return value of \code{plotCache()} is a function that should be used in the
place of plotFunc. Each unique combination of inputs will be cached to disk
in the location specified by \code{cachePath}.
}
\details{
The invalidationExpr expression will be monitored and whenever it is
The \code{invalidationExpr} expression will be monitored and whenever it is
invalidated, so too is the cache invalidated (the contents are erased).
}