R Merge Columns Into One

  1. Merge Columns In Excel
  2. Merge In R
R Merge Columns Into One

Merge Columns In Excel

The generic functions cbind and rbind take a sequence of vector and/or matrix arguments and combine them as the columns or rows, respectively, of a matrix. If there are several matrix arguments, they must all have the same number of columns (or rows) and this will be the number of columns (or rows) of the result. Dec 03, 2019 I’d like to add a column with the airline names from mylookup. One base R way to do this is with the merge function, using the basic syntax merge (df1, df2). It doesn’t matter the order of data. Nov 18, 2016 Use R to Combine Multiple Columns of Data into a Single Column Spread Out Across Rows Posted on November 18, 2016 by Douglas E Rice in R bloggers 0 Comments This article was first published on (R)very Day, and kindly contributed to R-bloggers.

Source: R/modify_columns.R

This function takes input from two or more columns and allows the contents tobe merged them into a single column, using a pattern that specifies theformatting. We can specify which columns to merge together in the columnsargument. The string-combining pattern is given in the pattern argument.The first column in the columns series operates as the target column (i.e.,will undergo mutation) whereas all following columns will be untouched.There is the option to hide the non-target columns (i.e., second andsubsequent columns given in columns).

Arguments

data

A table object that is created using the gt() function.

columns

The columns that will participate in the merging process. Thefirst column name provided will be the target column (i.e., undergomutation) and the other columns will serve to provide input.

hide_columns

Any column names provided here will have their statechanged to hidden (via internal use of cols_hide() if they aren'talready hidden. This is convenient if the shared purpose of these specifiedcolumns is only to provide string input to the target column. To suppressany hiding of columns, FALSE can be used here.

pattern

A formatting pattern that specifies the arrangement of thecolumn values and any string literals. We need to use column numbers(corresponding to the position of columns provided in columns) within thepattern. These indices are to be placed in curly braces (e.g., {1}). Allcharacters outside of braces are taken to be string literals.

Value

An object of class gt_tbl.

Details

Merge In R

There are three other column-merging functions that offer specializedbehavior that is optimized for common table tasks: cols_merge_range(),cols_merge_uncert(), and cols_merge_n_pct(). These functions operatesimilarly, where the non-target columns can be optionally hidden from theoutput table through the autohide option.

Figures

Function ID

Merge

4-12

See also

Other Modify Columns: cols_align(),cols_hide(),cols_label(),cols_merge_n_pct(),cols_merge_range(),cols_merge_uncert(),cols_move_to_end(),cols_move_to_start(),cols_move(),cols_unhide(),cols_width()

Examples