Description Usage Arguments Details Value Author(s) See Also Examples
Returns a data.frame
with one row for each
package and columns Count
= number of rows in the
search results for that package, maxScore
and
totalScore
= max and total score for help pages
found from that package.
1 | PackageSummary(x, sortby=NULL)
|
x |
a data.frame with columns |
sortby |
a character vector specifying how the Components of |
1. Convert x['Package] to character to automatically drop any unused levels of a factor.
2. Compute Count, TotalScore, and MaxScore.
3. Find the first occurrence of each Package, and use
that to convert the Link to the first help page to
pkgLink
= a link for the package. For example,
the Link to 'html' for help('c') is
'http://finzi.psych.upenn.edu/R/library/base/html/c.html',
and pkgLink
to the 'html' overview for 'base' is
'http://finzi.psych.upenn.edu/R/library/base/html/00Index.html'.
4. Assemble into a data.frame
, sort and
return.
a data.frame
with one row for each package and
columns Package
, Count
, MaxScore
,
TotalScore
, Date
, and pkgLink
,
sorted as specified by sortby
.
Spencer Graves
RSiteSearch
,
findFn
PackageSum2
,
packageSum
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | tstdf <- data.frame(Package=letters[c(1,1,2)], Score=2:4,
Date=LETTERS[1:3], stringsAsFactors=FALSE)
tstdf$Link <- paste0('http://finzi.psych.upenn.edu/R/library/',
tstdf$Package, '/html/', letters[4:6], '.html')
tstSum <- PackageSummary(tstdf)
# The answer:
tstSm <- data.frame(Package=letters[1:2], Count=c(a=2, b=1),
MaxScore=c(3, 4), TotalScore=c(5, 4),
Date=LETTERS[c(1, 3)], stringsAsFactors=FALSE)
tstSm$pkgLink <- paste0('http://finzi.psych.upenn.edu/R/library/',
tstdf$Package[2:3], '/html/00Index.html')
row.names(tstSm) <- 1:2
all.equal(tstSum, tstSm)
|
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