Hugo Scherer's avatar
Improved FarmDynR package with capacity for FADN data and useful functions for results analysis
Hugo Scherer committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 
<!DOCTYPE html>
<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Replace first or last line in strings — str_line_replace • FarmDynR</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Replace first or last line in strings — str_line_replace"><meta property="og:description" content="These functions serve to change the first or last line of strings which match a specific pattern (regex).
`str_firstLine_replace()` replaces the first line that matches the pattern.
`str_lastLine_replace()` replaces the last line that matches the pattern
They are useful, for example, when reading a text file with many lines and you want to preserve the lines of that text file.
When `which='all'`, it is a wrapper for `stringr::str_replace()`.
These functions serve to change the first or last line of strings which match a specific pattern (regex).
`str_firstLine_replace()` replaces the first line that matches the pattern.
`str_lastLine_replace()` replaces the last line that matches the pattern
They are useful, for example, when reading a text file with many lines and you want to preserve the lines of that text file.
When `which='all'`, it is a wrapper for `stringr::str_replace()`."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]--></head><body data-spy="scroll" data-target="#toc">
    

    <div class="container template-reference-topic">
      <header><div class="navbar navbar-default navbar-fixed-top" role="navigation">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <span class="navbar-brand">
        <a class="navbar-link" href="../index.html">FarmDynR</a>
Hugo Scherer's avatar
Fixed typos, added imports, updated README and DESCRIPTION  
Hugo Scherer committed
29 
        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
Hugo Scherer's avatar
Improved FarmDynR package with capacity for FADN data and useful functions for results analysis
Hugo Scherer committed
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 
      </span>
    </div>

    <div id="navbar" class="navbar-collapse collapse">
      <ul class="nav navbar-nav"><li>
  <a href="../reference/index.html">Reference</a>
</li>
<li>
  <a href="../news/index.html">Changelog</a>
</li>
      </ul><ul class="nav navbar-nav navbar-right"></ul></div><!--/.nav-collapse -->
  </div><!--/.container -->
</div><!--/.navbar -->

      

      </header><div class="row">
  <div class="col-md-9 contents">
    <div class="page-header">
    <h1>Replace first or last line in strings</h1>
    
    <div class="hidden name"><code>str_line_replace.Rd</code></div>
    </div>

    <div class="ref-description">
    <p>These functions serve to change the first or last line of strings which match a specific pattern (regex).
`str_firstLine_replace()` replaces the first line that matches the pattern.
`str_lastLine_replace()` replaces the last line that matches the pattern
They are useful, for example, when reading a text file with many lines and you want to preserve the lines of that text file.
When `which='all'`, it is a wrapper for `stringr::str_replace()`.</p>
<p>These functions serve to change the first or last line of strings which match a specific pattern (regex).
`str_firstLine_replace()` replaces the first line that matches the pattern.
`str_lastLine_replace()` replaces the last line that matches the pattern
They are useful, for example, when reading a text file with many lines and you want to preserve the lines of that text file.
When `which='all'`, it is a wrapper for `stringr::str_replace()`.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">str_line_replace</span><span class="op">(</span></span>
<span>  <span class="va">str</span>,</span>
<span>  <span class="va">pattern</span>,</span>
<span>  <span class="va">replacement</span>,</span>
<span>  which <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">"first"</span>, <span class="st">"last"</span>, <span class="st">"poles"</span>, <span class="st">"all"</span><span class="op">)</span></span>
<span><span class="op">)</span></span>
<span></span>
<span><span class="fu">str_firstLine_replace</span><span class="op">(</span><span class="va">str</span>, <span class="va">pattern</span>, <span class="va">replacement</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">str_lastLine_replace</span><span class="op">(</span><span class="va">str</span>, <span class="va">pattern</span>, <span class="va">replacement</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">str_line_replace</span><span class="op">(</span></span>
<span>  <span class="va">str</span>,</span>
<span>  <span class="va">pattern</span>,</span>
<span>  <span class="va">replacement</span>,</span>
<span>  which <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">"first"</span>, <span class="st">"last"</span>, <span class="st">"poles"</span>, <span class="st">"all"</span><span class="op">)</span></span>
<span><span class="op">)</span></span>
<span></span>
<span><span class="fu">str_firstLine_replace</span><span class="op">(</span><span class="va">str</span>, <span class="va">pattern</span>, <span class="va">replacement</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">str_lastLine_replace</span><span class="op">(</span><span class="va">str</span>, <span class="va">pattern</span>, <span class="va">replacement</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div id="arguments">
    <h2>Arguments</h2>
    <dl><dt>str</dt>
<dd><p>String with pattern to make replacement</p></dd>


<dt>pattern</dt>
<dd><p>Regular expression to replace</p></dd>


<dt>replacement</dt>
<dd><p>What to replace the pattern with</p></dd>


<dt>which</dt>
<dd><p>which one? first, last, all or the poles (first AND last)</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>string</p>


<p>string</p>
    </div>
    <div id="see-also">
    <h2>See also</h2>
    <div class="dont-index"><p>[stringr::str_replace()]</p>
<p>[stringr::str_replace()]</p></div>
    </div>

    <div id="ref-examples">
    <h2>Examples</h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span></span></span>
<span class="r-in"><span><span class="va">somelines</span> <span class="op">&lt;-</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">'AAAAA'</span>, <span class="st">'textytext'</span>, <span class="st">'BBBBB'</span>, <span class="st">'AAAAA'</span>, <span class="st">'writingwriting'</span>, <span class="st">'AAAAA'</span>, <span class="st">'etc'</span>, <span class="st">'etc'</span>, <span class="st">'BBBBB'</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_firstLine_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedfirstline'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "changedfirstline" "textytext"        "BBBBB"            "AAAAA"           </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting"   "AAAAA"            "etc"              "etc"             </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"           </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_lastLine_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedlastline'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "AAAAA"           "textytext"       "BBBBB"           "AAAAA"          </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting"  "changedlastline" "etc"             "etc"            </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"          </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_line_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedpoles'</span>, which<span class="op">=</span><span class="st">'poles'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "changedpoles"   "textytext"      "BBBBB"          "AAAAA"         </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting" "changedpoles"   "etc"            "etc"           </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"         </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_line_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedall'</span>, which<span class="op">=</span><span class="st">'all'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "changedall"     "textytext"      "BBBBB"          "changedall"    </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting" "changedall"     "etc"            "etc"           </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"         </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="va">somelines</span> <span class="op">&lt;-</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">'AAAAA'</span>, <span class="st">'textytext'</span>, <span class="st">'BBBBB'</span>, <span class="st">'AAAAA'</span>, <span class="st">'writingwriting'</span>, <span class="st">'AAAAA'</span>, <span class="st">'etc'</span>, <span class="st">'etc'</span>, <span class="st">'BBBBB'</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_firstLine_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedfirstline'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "changedfirstline" "textytext"        "BBBBB"            "AAAAA"           </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting"   "AAAAA"            "etc"              "etc"             </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"           </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_lastLine_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedlastline'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "AAAAA"           "textytext"       "BBBBB"           "AAAAA"          </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting"  "changedlastline" "etc"             "etc"            </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"          </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_line_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedpoles'</span>, which<span class="op">=</span><span class="st">'poles'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "changedpoles"   "textytext"      "BBBBB"          "AAAAA"         </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting" "changedpoles"   "etc"            "etc"           </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"         </span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu">str_line_replace</span><span class="op">(</span><span class="va">somelines</span>, <span class="st">'AAAAA'</span>, <span class="st">'changedall'</span>, which<span class="op">=</span><span class="st">'all'</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "changedall"     "textytext"      "BBBBB"          "changedall"    </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [5] "writingwriting" "changedall"     "etc"            "etc"           </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [9] "BBBBB"         </span>
<span class="r-in"><span></span></span>
</code></pre></div>
    </div>
  </div>
  <div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
    <nav id="toc" data-toggle="toc" class="sticky-top"><h2 data-toc-skip>Contents</h2>
    </nav></div>
</div>


      <footer><div class="copyright">
  <p></p><p>Developed by Hugo Scherer.</p>
</div>

<div class="pkgdown">
  <p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.0.7.</p>
</div>

      </footer></div>

  


  

  </body></html>