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Tools for working with row names

Usage

rownames_as_column(x, var = "rowname")

column_as_rownames(x, var = "rowname")

Arguments

x

A data frame.

var

Name of column to use for rownames. For column_as_rownames(), this argument can be the variable name or the column number.

Value

rownames_as_column() and column_as_rownames() both return a data frame.

Examples

# Convert between row names and column --------------------------------
test <- rownames_as_column(mtcars, var = "car")
test
#>                    car  mpg cyl  disp  hp drat    wt  qsec vs am gear carb
#> 1            Mazda RX4 21.0   6 160.0 110 3.90 2.620 16.46  0  1    4    4
#> 2        Mazda RX4 Wag 21.0   6 160.0 110 3.90 2.875 17.02  0  1    4    4
#> 3           Datsun 710 22.8   4 108.0  93 3.85 2.320 18.61  1  1    4    1
#> 4       Hornet 4 Drive 21.4   6 258.0 110 3.08 3.215 19.44  1  0    3    1
#> 5    Hornet Sportabout 18.7   8 360.0 175 3.15 3.440 17.02  0  0    3    2
#> 6              Valiant 18.1   6 225.0 105 2.76 3.460 20.22  1  0    3    1
#> 7           Duster 360 14.3   8 360.0 245 3.21 3.570 15.84  0  0    3    4
#> 8            Merc 240D 24.4   4 146.7  62 3.69 3.190 20.00  1  0    4    2
#> 9             Merc 230 22.8   4 140.8  95 3.92 3.150 22.90  1  0    4    2
#> 10            Merc 280 19.2   6 167.6 123 3.92 3.440 18.30  1  0    4    4
#> 11           Merc 280C 17.8   6 167.6 123 3.92 3.440 18.90  1  0    4    4
#> 12          Merc 450SE 16.4   8 275.8 180 3.07 4.070 17.40  0  0    3    3
#> 13          Merc 450SL 17.3   8 275.8 180 3.07 3.730 17.60  0  0    3    3
#> 14         Merc 450SLC 15.2   8 275.8 180 3.07 3.780 18.00  0  0    3    3
#> 15  Cadillac Fleetwood 10.4   8 472.0 205 2.93 5.250 17.98  0  0    3    4
#> 16 Lincoln Continental 10.4   8 460.0 215 3.00 5.424 17.82  0  0    3    4
#> 17   Chrysler Imperial 14.7   8 440.0 230 3.23 5.345 17.42  0  0    3    4
#> 18            Fiat 128 32.4   4  78.7  66 4.08 2.200 19.47  1  1    4    1
#> 19         Honda Civic 30.4   4  75.7  52 4.93 1.615 18.52  1  1    4    2
#> 20      Toyota Corolla 33.9   4  71.1  65 4.22 1.835 19.90  1  1    4    1
#> 21       Toyota Corona 21.5   4 120.1  97 3.70 2.465 20.01  1  0    3    1
#> 22    Dodge Challenger 15.5   8 318.0 150 2.76 3.520 16.87  0  0    3    2
#> 23         AMC Javelin 15.2   8 304.0 150 3.15 3.435 17.30  0  0    3    2
#> 24          Camaro Z28 13.3   8 350.0 245 3.73 3.840 15.41  0  0    3    4
#> 25    Pontiac Firebird 19.2   8 400.0 175 3.08 3.845 17.05  0  0    3    2
#> 26           Fiat X1-9 27.3   4  79.0  66 4.08 1.935 18.90  1  1    4    1
#> 27       Porsche 914-2 26.0   4 120.3  91 4.43 2.140 16.70  0  1    5    2
#> 28        Lotus Europa 30.4   4  95.1 113 3.77 1.513 16.90  1  1    5    2
#> 29      Ford Pantera L 15.8   8 351.0 264 4.22 3.170 14.50  0  1    5    4
#> 30        Ferrari Dino 19.7   6 145.0 175 3.62 2.770 15.50  0  1    5    6
#> 31       Maserati Bora 15.0   8 301.0 335 3.54 3.570 14.60  0  1    5    8
#> 32          Volvo 142E 21.4   4 121.0 109 4.11 2.780 18.60  1  1    4    2
head(column_as_rownames(test, var = "car"))
#>                    mpg cyl disp  hp drat    wt  qsec vs am gear carb
#> Mazda RX4         21.0   6  160 110 3.90 2.620 16.46  0  1    4    4
#> Mazda RX4 Wag     21.0   6  160 110 3.90 2.875 17.02  0  1    4    4
#> Datsun 710        22.8   4  108  93 3.85 2.320 18.61  1  1    4    1
#> Hornet 4 Drive    21.4   6  258 110 3.08 3.215 19.44  1  0    3    1
#> Hornet Sportabout 18.7   8  360 175 3.15 3.440 17.02  0  0    3    2
#> Valiant           18.1   6  225 105 2.76 3.460 20.22  1  0    3    1