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replaces [base::droplevels()].">< meta property = "og:description" content = "This extends [ forcats::fct_drop ( ) ] to natively work across a data . frame and
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< img src = "../logo.png" class = "logo" alt = "" > < h1 > Drop unused levels preserving label data< / h1 >
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< small class = "dont-index" > Source: < a href = "https://github.com/agdamsbo/REDCapCAST/blob/main/R/fct_drop.R" class = "external-link" > < code > R/fct_drop.R< / code > < / a > < / small >
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< div class = "d-none name" > < code > fct_drop.Rd< / code > < / div >
< / div >
< div class = "ref-description section level2" >
< p > This extends [forcats::fct_drop()] to natively work across a data.frame and
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replaces [base::droplevels()].< / p >
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< / div >
< div class = "section level2" >
< h2 id = "ref-usage" > Usage< a class = "anchor" aria-label = "anchor" href = "#ref-usage" > < / a > < / h2 >
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< div class = "sourceCode" > < pre class = "sourceCode r" > < code > < span > < span class = "fu" > fct_drop< / span > < span class = "op" > (< / span > < span class = "va" > x< / span > , < span class = "va" > ...< / span > < span class = "op" > )< / span > < / span >
< span > < / span >
< span > < span class = "co" > # S3 method for class 'data.frame'< / span > < / span >
< span > < span class = "fu" > fct_drop< / span > < span class = "op" > (< / span > < span class = "va" > x< / span > , < span class = "va" > ...< / span > < span class = "op" > )< / span > < / span >
< span > < / span >
< span > < span class = "co" > # S3 method for class 'factor'< / span > < / span >
< span > < span class = "fu" > fct_drop< / span > < span class = "op" > (< / span > < span class = "va" > x< / span > , < span class = "va" > ...< / span > < span class = "op" > )< / span > < / span > < / code > < / pre > < / div >
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< / div >
< div class = "section level2" >
< h2 id = "arguments" > Arguments< a class = "anchor" aria-label = "anchor" href = "#arguments" > < / a > < / h2 >
< dl > < dt id = "arg-x" > x< a class = "anchor" aria-label = "anchor" href = "#arg-x" > < / a > < / dt >
< dd > < p > Factor to drop unused levels< / p > < / dd >
< dt id = "arg--" > ...< a class = "anchor" aria-label = "anchor" href = "#arg--" > < / a > < / dt >
< dd > < p > Other arguments passed down to method.< / p > < / dd >
< / dl > < / div >
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< div class = "section level2" >
< h2 id = "ref-examples" > Examples< a class = "anchor" aria-label = "anchor" href = "#ref-examples" > < / a > < / h2 >
< div class = "sourceCode" > < pre class = "sourceCode r" > < code > < span class = "r-in" > < span > < span class = "va" > mtcars< / span > < span class = "op" > |> < / span > < / span > < / span >
< span class = "r-in" > < span > < span class = "fu" > < a href = "numchar2fct.html" > numchar2fct< / a > < / span > < span class = "op" > (< / span > < span class = "op" > )< / span > < span class = "op" > |> < / span > < / span > < / span >
< span class = "r-in" > < span > < span class = "fu" > fct_drop< / span > < span class = "op" > (< / span > < span class = "op" > )< / span > < / span > < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #949494;" > # A tibble: 32 × < / span > < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > mpg cyl disp hp drat wt qsec vs am gear carb < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #949494; font-style: italic;" > < dbl> < / span > < span style = "color: #949494; font-style: italic;" > < fct> < / span > < span style = "color: #949494; font-style: italic;" > < dbl> < / span > < span style = "color: #949494; font-style: italic;" > < dbl> < / span > < span style = "color: #949494; font-style: italic;" > < dbl> < / span > < span style = "color: #949494; font-style: italic;" > < dbl> < / span > < span style = "color: #949494; font-style: italic;" > < dbl> < / span > < span style = "color: #949494; font-style: italic;" > < fct> < / span > < span style = "color: #949494; font-style: italic;" > < fct> < / span > < span style = "color: #949494; font-style: italic;" > < fct> < / span > < span style = "color: #949494; font-style: italic;" > < fct> < / span > < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 1< / span > 21 6 160 110 3.9 2.62 16.5 0 1 4 4 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 2< / span > 21 6 160 110 3.9 2.88 17.0 0 1 4 4 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 3< / span > 22.8 4 108 93 3.85 2.32 18.6 1 1 4 1 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 4< / span > 21.4 6 258 110 3.08 3.22 19.4 1 0 3 1 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 5< / span > 18.7 8 360 175 3.15 3.44 17.0 0 0 3 2 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 6< / span > 18.1 6 225 105 2.76 3.46 20.2 1 0 3 1 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 7< / span > 14.3 8 360 245 3.21 3.57 15.8 0 0 3 4 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 8< / span > 24.4 4 147. 62 3.69 3.19 20 1 0 4 2 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 9< / span > 22.8 4 141. 95 3.92 3.15 22.9 1 0 4 2 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #BCBCBC;" > 10< / span > 19.2 6 168. 123 3.92 3.44 18.3 1 0 4 4 < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > < span style = "color: #949494;" > # ℹ < / span > < / span >
< span class = "r-in" > < span > < span class = "va" > mtcars< / span > < span class = "op" > |> < / span > < / span > < / span >
< span class = "r-in" > < span > < span class = "fu" > < a href = "numchar2fct.html" > numchar2fct< / a > < / span > < span class = "op" > (< / span > < span class = "op" > )< / span > < span class = "op" > |> < / span > < / span > < / span >
< span class = "r-in" > < span > < span class = "fu" > dplyr< / span > < span class = "fu" > ::< / span > < span class = "fu" > < a href = "https://dplyr.tidyverse.org/reference/mutate.html" class = "external-link" > mutate< / a > < / span > < span class = "op" > (< / span > vs < span class = "op" > =< / span > < span class = "fu" > fct_drop< / span > < span class = "op" > (< / span > < span class = "va" > vs< / span > < span class = "op" > )< / span > < span class = "op" > )< / span > < / span > < / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > mpg cyl disp hp drat wt qsec vs am gear carb< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Mazda RX4 21.0 6 160.0 110 3.90 2.620 16.46 0 1 4 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Mazda RX4 Wag 21.0 6 160.0 110 3.90 2.875 17.02 0 1 4 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Datsun 710 22.8 4 108.0 93 3.85 2.320 18.61 1 1 4 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Hornet 4 Drive 21.4 6 258.0 110 3.08 3.215 19.44 1 0 3 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Hornet Sportabout 18.7 8 360.0 175 3.15 3.440 17.02 0 0 3 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Valiant 18.1 6 225.0 105 2.76 3.460 20.22 1 0 3 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Duster 360 14.3 8 360.0 245 3.21 3.570 15.84 0 0 3 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 240D 24.4 4 146.7 62 3.69 3.190 20.00 1 0 4 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 230 22.8 4 140.8 95 3.92 3.150 22.90 1 0 4 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 280 19.2 6 167.6 123 3.92 3.440 18.30 1 0 4 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 280C 17.8 6 167.6 123 3.92 3.440 18.90 1 0 4 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 450SE 16.4 8 275.8 180 3.07 4.070 17.40 0 0 3 3< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 450SL 17.3 8 275.8 180 3.07 3.730 17.60 0 0 3 3< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Merc 450SLC 15.2 8 275.8 180 3.07 3.780 18.00 0 0 3 3< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Cadillac Fleetwood 10.4 8 472.0 205 2.93 5.250 17.98 0 0 3 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Lincoln Continental 10.4 8 460.0 215 3.00 5.424 17.82 0 0 3 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Chrysler Imperial 14.7 8 440.0 230 3.23 5.345 17.42 0 0 3 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Fiat 128 32.4 4 78.7 66 4.08 2.200 19.47 1 1 4 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Honda Civic 30.4 4 75.7 52 4.93 1.615 18.52 1 1 4 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Toyota Corolla 33.9 4 71.1 65 4.22 1.835 19.90 1 1 4 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Toyota Corona 21.5 4 120.1 97 3.70 2.465 20.01 1 0 3 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Dodge Challenger 15.5 8 318.0 150 2.76 3.520 16.87 0 0 3 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > AMC Javelin 15.2 8 304.0 150 3.15 3.435 17.30 0 0 3 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Camaro Z28 13.3 8 350.0 245 3.73 3.840 15.41 0 0 3 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Pontiac Firebird 19.2 8 400.0 175 3.08 3.845 17.05 0 0 3 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Fiat X1-9 27.3 4 79.0 66 4.08 1.935 18.90 1 1 4 1< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Porsche 914-2 26.0 4 120.3 91 4.43 2.140 16.70 0 1 5 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Lotus Europa 30.4 4 95.1 113 3.77 1.513 16.90 1 1 5 2< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Ford Pantera L 15.8 8 351.0 264 4.22 3.170 14.50 0 1 5 4< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Ferrari Dino 19.7 6 145.0 175 3.62 2.770 15.50 0 1 5 6< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Maserati Bora 15.0 8 301.0 335 3.54 3.570 14.60 0 1 5 8< / span >
< span class = "r-out co" > < span class = "r-pr" > #> < / span > Volvo 142E 21.4 4 121.0 109 4.11 2.780 18.60 1 1 4 2< / span >
< / code > < / pre > < / div >
< / div >
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