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For now only supports one level pivoting. Adding more levels would require
an added "ignore" string pattern or similarly. Example 2.'><meta property="og:description" content='This function requires and assumes a systematic naming of variables.
For now only supports one level pivoting. Adding more levels would require
an added "ignore" string pattern or similarly. Example 2.'></head><body>
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<h1>Alternative pivoting method for easily pivoting based on name pattern</h1>
<small class="dont-index">Source: <a href="https://github.com/agdamsbo/freesearcheR/blob/main/R/wide2long.R" class="external-link"><code>R/wide2long.R</code></a></small>
<div class="d-none name"><code>wide2long.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>This function requires and assumes a systematic naming of variables.
For now only supports one level pivoting. Adding more levels would require
an added "ignore" string pattern or similarly. Example 2.</p>
</div>
<div class="section level2">
<h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">wide2long</span><span class="op">(</span></span>
<span> <span class="va">data</span>,</span>
<span> <span class="va">pattern</span>,</span>
<span> type <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"prefix"</span>, <span class="st">"infix"</span>, <span class="st">"suffix"</span><span class="op">)</span>,</span>
<span> id.col <span class="op">=</span> <span class="fl">1</span>,</span>
<span> instance.name <span class="op">=</span> <span class="st">"instance"</span></span>
<span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level2">
<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt id="arg-data">data<a class="anchor" aria-label="anchor" href="#arg-data"></a></dt>
<dd><p>data</p></dd>
<dt id="arg-pattern">pattern<a class="anchor" aria-label="anchor" href="#arg-pattern"></a></dt>
<dd><p>pattern(s) to match. Character vector of length 1 or more.</p></dd>
<dt id="arg-type">type<a class="anchor" aria-label="anchor" href="#arg-type"></a></dt>
<dd><p>type of match. can be one of "prefix","infix" or "suffix".</p></dd>
<dt id="arg-id-col">id.col<a class="anchor" aria-label="anchor" href="#arg-id-col"></a></dt>
<dd><p>ID column. Will fill ID for all. Column name or numeric index.
Default is "1", first column.</p></dd>
<dt id="arg-instance-name">instance.name<a class="anchor" aria-label="anchor" href="#arg-instance-name"></a></dt>
<dd></dd>
</dl></div>
<div class="section level2">
<h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
<p>data.frame</p>
</div>
<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="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span></span></span>
<span class="r-in"><span> <span class="fl">1</span><span class="op">:</span><span class="fl">20</span>, <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">70</span><span class="op">:</span><span class="fl">80</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">70</span><span class="op">:</span><span class="fl">100</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">70</span><span class="op">:</span><span class="fl">100</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">170</span><span class="op">:</span><span class="fl">200</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/stats/setNames.html" class="external-link">setNames</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"id"</span>, <span class="st">"age"</span>, <span class="st">"weight_0"</span>, <span class="st">"weight_1"</span>, <span class="st">"height_1"</span><span class="op">)</span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="fu">wide2long</span><span class="op">(</span>pattern <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"_0"</span>, <span class="st">"_1"</span><span class="op">)</span>, type <span class="op">=</span> <span class="st">"suffix"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> id age instance weight height</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1 1 73 0 93 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2 1 NA 1 80 189</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3 2 76 0 71 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4 2 NA 1 78 185</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5 3 73 0 71 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6 3 NA 1 89 196</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 7 4 76 0 81 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 8 4 NA 1 73 184</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 9 5 70 0 98 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 10 5 NA 1 85 183</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 11 6 70 0 90 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 12 6 NA 1 99 183</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 13 7 77 0 74 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 14 7 NA 1 77 186</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 15 8 80 0 81 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 16 8 NA 1 72 200</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 17 9 72 0 95 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 18 9 NA 1 90 173</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 19 10 79 0 72 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 20 10 NA 1 92 184</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 21 11 78 0 90 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 22 11 NA 1 90 194</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 23 12 72 0 83 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 24 12 NA 1 79 194</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 25 13 76 0 80 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 26 13 NA 1 75 172</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 27 14 76 0 100 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 28 14 NA 1 76 173</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 29 15 74 0 83 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 30 15 NA 1 96 181</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 31 16 75 0 80 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 32 16 NA 1 79 199</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 33 17 77 0 71 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 34 17 NA 1 95 178</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 35 18 76 0 89 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 36 18 NA 1 99 175</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 37 19 75 0 78 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 38 19 NA 1 88 175</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 39 20 79 0 83 NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 40 20 NA 1 98 178</span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span></span></span>
<span class="r-in"><span> <span class="fl">1</span><span class="op">:</span><span class="fl">20</span>, <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">70</span><span class="op">:</span><span class="fl">80</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">70</span><span class="op">:</span><span class="fl">100</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">70</span><span class="op">:</span><span class="fl">100</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/sample.html" class="external-link">sample</a></span><span class="op">(</span><span class="fl">170</span><span class="op">:</span><span class="fl">200</span>, <span class="fl">20</span>, <span class="cn">TRUE</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/stats/setNames.html" class="external-link">setNames</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"id"</span>, <span class="st">"age"</span>, <span class="st">"weight_0"</span>, <span class="st">"weight_a_1"</span>, <span class="st">"height_b_1"</span><span class="op">)</span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="fu">wide2long</span><span class="op">(</span>pattern <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"_0"</span>, <span class="st">"_1"</span><span class="op">)</span>, type <span class="op">=</span> <span class="st">"suffix"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> id age instance weight weight_a height_b</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1 1 78 0 74 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2 1 NA 1 NA 87 171</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3 2 73 0 78 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4 2 NA 1 NA 99 186</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 5 3 77 0 71 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6 3 NA 1 NA 92 196</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 7 4 75 0 80 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 8 4 NA 1 NA 71 174</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 9 5 80 0 71 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 10 5 NA 1 NA 88 173</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 11 6 77 0 74 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 12 6 NA 1 NA 79 195</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 13 7 72 0 90 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 14 7 NA 1 NA 86 200</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 15 8 76 0 93 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 16 8 NA 1 NA 99 175</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 17 9 79 0 99 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 18 9 NA 1 NA 95 192</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 19 10 79 0 81 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 20 10 NA 1 NA 97 179</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 21 11 76 0 81 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 22 11 NA 1 NA 74 175</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 23 12 75 0 90 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 24 12 NA 1 NA 93 186</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 25 13 77 0 94 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 26 13 NA 1 NA 71 179</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 27 14 79 0 76 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 28 14 NA 1 NA 92 200</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 29 15 76 0 99 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 30 15 NA 1 NA 96 184</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 31 16 72 0 78 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 32 16 NA 1 NA 92 196</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 33 17 73 0 84 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 34 17 NA 1 NA 80 180</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 35 18 76 0 75 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 36 18 NA 1 NA 95 199</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 37 19 77 0 84 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 38 19 NA 1 NA 79 170</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 39 20 80 0 93 NA NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 40 20 NA 1 NA 97 190</span>
<span class="r-in"><span><span class="co"># Optional filling of missing values by last observation carried forward</span></span></span>
<span class="r-in"><span><span class="co"># Needed for mmrm analyses</span></span></span>
<span class="r-in"><span><span class="va">long_missings</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="co"># Fills record ID assuming none are missing</span></span></span>
<span class="r-in"><span> <span class="fu">tidyr</span><span class="fu">::</span><span class="fu"><a href="https://tidyr.tidyverse.org/reference/fill.html" class="external-link">fill</a></span><span class="op">(</span><span class="va">record_id</span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="co"># Grouping by ID for the last step</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/group_by.html" class="external-link">group_by</a></span><span class="op">(</span><span class="va">record_id</span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="co"># Filling missing data by ID</span></span></span>
<span class="r-in"><span> <span class="fu">tidyr</span><span class="fu">::</span><span class="fu"><a href="https://tidyr.tidyverse.org/reference/fill.html" class="external-link">fill</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/names.html" class="external-link">names</a></span><span class="op">(</span><span class="va">long_missings</span><span class="op">)</span><span class="op">[</span><span class="op">!</span><span class="fu"><a href="https://rdrr.io/r/base/names.html" class="external-link">names</a></span><span class="op">(</span><span class="va">long_missings</span><span class="op">)</span> <span class="op"><a href="https://rdrr.io/r/base/match.html" class="external-link">%in%</a></span> <span class="va">new_names</span><span class="op">]</span><span class="op">)</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span> <span class="co"># Remove grouping</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/group_by.html" class="external-link">ungroup</a></span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-err co"><span class="r-pr">#&gt;</span> <span class="error">Error:</span> object 'long_missings' not found</span>
</code></pre></div>
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