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<img src="../logo.png" class="logo" alt=""><h1>Append a column to a data.frame</h1>
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<small class="dont-index">Source: <a href="https://github.com/agdamsbo/FreesearchR/blob/v25.7.1/R/helpers.R" class="external-link"><code>R/helpers.R</code></a></small>
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<div class="d-none name"><code>append_column.Rd</code></div>
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</div>
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<div class="ref-description section level2">
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<p>Append a column to a data.frame</p>
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</div>
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<div class="section level2">
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<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">append_column</span><span class="op">(</span><span class="va">data</span>, <span class="va">column</span>, <span class="va">name</span>, index <span class="op">=</span> <span class="st">"right"</span><span class="op">)</span></span></code></pre></div>
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</div>
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<div class="section level2">
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<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
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<dl><dt id="arg-data">data<a class="anchor" aria-label="anchor" href="#arg-data"></a></dt>
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<dd><p>data</p></dd>
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<dt id="arg-column">column<a class="anchor" aria-label="anchor" href="#arg-column"></a></dt>
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<dd><p>new column (vector) or data.frame with 1 column</p></dd>
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<dt id="arg-name">name<a class="anchor" aria-label="anchor" href="#arg-name"></a></dt>
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<dd><p>new name (pre-fix)</p></dd>
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<dt id="arg-index">index<a class="anchor" aria-label="anchor" href="#arg-index"></a></dt>
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<dd><p>desired location. May be "left", "right" or numeric index.</p></dd>
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</dl></div>
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<div class="section level2">
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<h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
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<p>data.frame</p>
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</div>
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<div class="section level2">
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<h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
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<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="va">mtcars</span> <span class="op">|></span></span></span>
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<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>mpg_cut <span class="op">=</span> <span class="va">mpg</span><span class="op">)</span> <span class="op">|></span></span></span>
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<span class="r-in"><span> <span class="fu">append_column</span><span class="op">(</span><span class="va">mtcars</span><span class="op">$</span><span class="va">mpg</span>, <span class="st">"mpg_cutter"</span><span class="op">)</span></span></span>
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<span class="r-out co"><span class="r-pr">#></span> mpg cyl disp hp drat wt qsec vs am gear carb mpg_cut</span>
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<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 21.0</span>
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<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 21.0</span>
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<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 22.8</span>
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<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 21.4</span>
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<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 18.7</span>
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<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 18.1</span>
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<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 14.3</span>
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<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 24.4</span>
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<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 22.8</span>
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<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 19.2</span>
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<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 17.8</span>
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<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 16.4</span>
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<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 17.3</span>
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<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 15.2</span>
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<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 10.4</span>
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<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 10.4</span>
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<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 14.7</span>
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<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 32.4</span>
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<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 30.4</span>
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<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 33.9</span>
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<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 21.5</span>
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<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 15.5</span>
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<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 15.2</span>
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<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 13.3</span>
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<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 19.2</span>
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<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 27.3</span>
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<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 26.0</span>
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<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 30.4</span>
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<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 15.8</span>
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<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 19.7</span>
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<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 15.0</span>
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<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 21.4</span>
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<span class="r-out co"><span class="r-pr">#></span> mpg_cutter</span>
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<span class="r-out co"><span class="r-pr">#></span> Mazda RX4 21.0</span>
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<span class="r-out co"><span class="r-pr">#></span> Mazda RX4 Wag 21.0</span>
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<span class="r-out co"><span class="r-pr">#></span> Datsun 710 22.8</span>
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<span class="r-out co"><span class="r-pr">#></span> Hornet 4 Drive 21.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Hornet Sportabout 18.7</span>
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<span class="r-out co"><span class="r-pr">#></span> Valiant 18.1</span>
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<span class="r-out co"><span class="r-pr">#></span> Duster 360 14.3</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 240D 24.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 230 22.8</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 280 19.2</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 280C 17.8</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 450SE 16.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 450SL 17.3</span>
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<span class="r-out co"><span class="r-pr">#></span> Merc 450SLC 15.2</span>
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<span class="r-out co"><span class="r-pr">#></span> Cadillac Fleetwood 10.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Lincoln Continental 10.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Chrysler Imperial 14.7</span>
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<span class="r-out co"><span class="r-pr">#></span> Fiat 128 32.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Honda Civic 30.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Toyota Corolla 33.9</span>
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<span class="r-out co"><span class="r-pr">#></span> Toyota Corona 21.5</span>
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<span class="r-out co"><span class="r-pr">#></span> Dodge Challenger 15.5</span>
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<span class="r-out co"><span class="r-pr">#></span> AMC Javelin 15.2</span>
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<span class="r-out co"><span class="r-pr">#></span> Camaro Z28 13.3</span>
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<span class="r-out co"><span class="r-pr">#></span> Pontiac Firebird 19.2</span>
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<span class="r-out co"><span class="r-pr">#></span> Fiat X1-9 27.3</span>
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<span class="r-out co"><span class="r-pr">#></span> Porsche 914-2 26.0</span>
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<span class="r-out co"><span class="r-pr">#></span> Lotus Europa 30.4</span>
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<span class="r-out co"><span class="r-pr">#></span> Ford Pantera L 15.8</span>
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<span class="r-out co"><span class="r-pr">#></span> Ferrari Dino 19.7</span>
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<span class="r-out co"><span class="r-pr">#></span> Maserati Bora 15.0</span>
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<span class="r-out co"><span class="r-pr">#></span> Volvo 142E 21.4</span>
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</code></pre></div>
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