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| splitc-package | Split data over columns |
| as.data.frame.by | Convert the results of by() to a data.frame. |
| as.matrix.by | Coerces a by object into a matrix (only tested on a 2d objects). |
| autoplot.microbenchmark | Autoplot method for microbenchmark objects: Prettier graphs for microbenchmark using ggplot2 |
| between | Classify values into groups based on which numbers they're between |
| bin | Classify values into groups based on which numbers they're between |
| bytable | Produces a nice summary table by groupings |
| categorize | Categorize a vector based on a data.frame with two columns, the low and high end points of each category. |
| compareplot | Bar plot divided by three groupings |
| daysofweek | Return a vector of the days of the week, in order |
| destring | Convert character vector to numeric, ignoring irrelevant characters. |
| distinct | Returns number of distinct observations in each column of a data frame or in a vector |
| evens | Shortcut functions to return the odd and even values from a vector |
| expandDF | Functions to manipulate data frames |
| first | Convenience functions to return the last/first element of a vector |
| fpart | Obtain the fractional part of a numeric |
| hist_horiz | Kludgy horizontal histogram function (really should just fix the lattice equivalent) |
| homogenous | Returns whether a vector is homogenous or not |
| iapply | Iteratively (recursively) apply a function to its own output |
| japply | japply: Judiciously sapply to only selected columns |
| last | Convenience functions to return the last/first element of a vector |
| latex.table.by | Exports a latex table with the first N columns being multirow grouping variables. |
| merge.list | Method to merge two lists Matches names of each list element and combines any sub-elements |
| middle.group | Return a vector containing the locations of the middle of every group in a vector, either as a numerical index or as a TRUE/FALSE boolean. |
| munch | Recursively delete entries containing 'what' before entry pointed to by 'which' |
| odds | Shortcut functions to return the odd and even values from a vector |
| panel.densityplot.enhanced | Various panel functions |
| panel.ecdf | Various panel functions |
| panel.xyplot_rug | Various panel functions |
| prettify | Function to prettify the output of another function using a 'var.labels' attribute This is particularly useful in combination with read.dta et al. |
| quantile_cutpoints | Classify values into groups based on which numbers they're between |
| readdir | Loads all readable files in a directory into a list, with names according to the filenames |
| remove.factors | Converts all factors in a data.frame to character. |
| rep_along | Repeat a vector until it matches the length of another vector |
| reshapeasy | reshapeasy: Easier reshaping from "wide" to "long" and back again |
| roundnear | Rounds a numeric vector to arbitrary values (not just decimal values as with round) or to a specified number of significant digits. |
| round_sigfig | Rounds a numeric vector to arbitrary values (not just decimal values as with round) or to a specified number of significant digits. |
| searchPattern | Create a vector that starts with a given number and widens out |
| shift | Shifts a vector's elements left or right by N elements. |
| shift.data.frame | Shifts a vector's elements left or right by N elements. |
| shift.default | Shifts a vector's elements left or right by N elements. |
| sides | Figure out how many "sides" a formula has See also SimonO101's answer at http://stackoverflow.com/a/16376939/636656 |
| sides.default | Figure out how many "sides" a formula has See also SimonO101's answer at http://stackoverflow.com/a/16376939/636656 |
| sides.formula | Figure out how many "sides" a formula has See also SimonO101's answer at http://stackoverflow.com/a/16376939/636656 |
| sort.data.frame | Sort a data.frame |
| splitc | Split data over columns |
| splitDF | Functions to manipulate data frames |
| stack.list | Stack lists into data.frames |
| tab | Table function which lists NA entries by default This is a simple wrapper to change defaults from the base R table() |
| title.page.new | Plot a title page containing the given text. Good for breaking up sections of plot PDFs. |
| trues | Return vector of equal length containing all TRUEs |
| unfactor.data.frame | Convert all factors to character |
| unsplitDF | Functions to manipulate data frames |
| write.sanitized.csv | Outputs a sanitized CSV file for fussy input systems e.g. ArcGIS and Mechanical Turk Performs three cleansing actions: converts text to latin1 encoding, eliminates funny characters in column names, and writes a CSV without the leading row.names column |
| xtable.CrossTable | Add in methods to handle CrossTable objects in xtable |
| xtable.lme | Add in methods to handle LME objects in xtable |
| xtable.summary.lme | Add in methods to handle LME objects in xtable |
| xtablelm | Produces the output of an lm object as it appears in the R console when you type summary(lmobject) |