Apr 27, 2019 Loading the trainingnames.csv file into R. Merging two columns (“firstname” and “lastname)”. Basic paste command description. The short theoretical explanation of the function is the following: paste (objects, sep=' ') Here, “objects” refers to any R objects you will be merging (in our case it will be two columns). The “sep= ” “” allows you to input a character that will separate the values in the new column. To Concatenate two columns of dataframe in R we generally use paste Function. Concatenate or join of two string column in R & integer columns in R is accomplished by Paste function. We can also concatenate or join numeric and string column. Let’s see how to Concatenate.

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. Ios launcher 14.

Details

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.

Combining Two Cell Values In R

Figures

Function ID

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

The cbind() and rbind() functions are generic methods for data frames. These data frame functions will be used if at least one argument is a data frame and the other arguments are vectors or matrices. To merge two data frames (datasets) horizontally, use the merge() function in the R language.

The cbind() function combines R Objects by rows or columns. The cbind() function stands for column-bind. The cbind() function combines vectors, matrices, and/or data frames by columns.

The cbind() function takes a1

Concatenate Two Columns In R

, a2, which takes a vector, matrix, data frames.deparse.level: for non-matrix, 0 constructs no labels, 1 or 2 constructs labels from the argument names.

ColumnsThe cbind() function takes a sequence of vector, matrix, or data frame arguments and combines them by columns or rows.

In this example, we created a data frame using three vectors and then add a fourth vector as a column to the original data frame using the cbind() function. In the final data frame, we can see that the c4 column is added.

To combine two data frames by columns, use the cbind() function. Let’s create a second data frame and use the cbind() function to merge the second data frame to the first data frame.

You can see that both data frame’s row count is the same, and that is why it merges perfectly, but if the row counts of both columns are different, it will give us the error. The deparse.level value defines how the column names generated. The default value of deparse.level is 1.

Output

We got this error: arguments imply differing number of rows: 4, 5

If the number of rows of the two data frames differs, the cbind() function cannot be used.

The cbind() function can also be applied to multiple columns and data objects. Define a data frame using three columns and add the two columns to that data frame using the cbind() function and see the output.

Merge Two Columns In R

The cbind() function, short for column bind, is a merge function that can combine two data frames with the same number of multiple rows into a single data frame.

That is it for the cbind function in R.

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