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append_phrases.html
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append_phrases.html
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The functions pc and pn are based on base functions
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<h1>Concatenate and repeat</h1>
<small class="dont-index">Source: <a href='https://github.com/leonawicz/tabr/blob/master/R/phrase_helpers.R'><code>R/phrase_helpers.R</code></a></small>
<div class="hidden name"><code>append_phrases.Rd</code></div>
</div>
<div class="ref-description">
<p>Helper functions for concatenating musical phrases and other strings
together as well as repetition.
The functions <code>pc</code> and <code>pn</code> are based on base functions
<code>paste</code> and<code>rep</code>, respectively, but are tailored for efficiency in
creating musical phrases.</p>
</div>
<pre class="usage"><span class='fu'>pc</span><span class='op'>(</span><span class='va'>...</span><span class='op'>)</span>
<span class='fu'>pn</span><span class='op'>(</span><span class='va'>x</span>, n <span class='op'>=</span> <span class='fl'>1</span><span class='op'>)</span></pre>
<h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
<table class="ref-arguments">
<colgroup><col class="name" /><col class="desc" /></colgroup>
<tr>
<th>...</th>
<td><p>character, phrase or non-phrase string.</p></td>
</tr>
<tr>
<th>x</th>
<td><p>character, phrase or non-phrase string.</p></td>
</tr>
<tr>
<th>n</th>
<td><p>integer, number of repetitions.</p></td>
</tr>
</table>
<h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
<p>phrase on non-phrase character string, noteworthy string if
applicable.</p>
<h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>
<p>These functions respect and retain the phrase class when applied to phrases.
They are aggressive for phrases and secondarily for noteworthy strings.
Combining a phrase with a non-phrase string will assume compatibility and
result in a new phrase object.
If no phrase objects are present, the presence of any noteworthy string will
in turn attempt to force conversion of all strings to noteworthy strings.
The aggressiveness provides convenience, but is counter to expected coercion
rules. It is up to the user to ensure all inputs can be forced into the more
specific child class.</p>
<p>This is especially useful for repeated instances. This function applies to
general slur notation as well.
Multiple input formats are allowed. Total number of note durations must be
even because all slurs require start and stop points.</p>
<h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
<pre class="examples"><div class='input'><span class='fu'>pc</span><span class='op'>(</span><span class='fl'>8</span>, <span class='st'>"16-"</span>, <span class='st'>"8^"</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "8 16- 8^"</div><div class='input'><span class='fu'>pn</span><span class='op'>(</span><span class='fl'>1</span>, <span class='fl'>2</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "1 1"</div><div class='input'><span class='va'>x</span> <span class='op'><-</span> <span class='fu'><a href='phrase.html'>phrase</a></span><span class='op'>(</span><span class='st'>"c ec'g' ec'g'"</span>, <span class='st'>"4 4 2"</span>, <span class='st'>"5 432 432"</span><span class='op'>)</span>
<span class='va'>y</span> <span class='op'><-</span> <span class='fu'><a href='phrase.html'>phrase</a></span><span class='op'>(</span><span class='st'>"a"</span>, <span class='fl'>1</span>, <span class='fl'>5</span><span class='op'>)</span>
<span class='fu'>pc</span><span class='op'>(</span><span class='va'>x</span>, <span class='va'>y</span><span class='op'>)</span>
</div><div class='output co'>#> <span style='color: #808080;'><</span><span style='color: #808080;font-weight: bold;'>Musical phrase</span><span style='color: #808080;'>></span><span>
#> </span><span style='color: #808080;'><</span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #D70000;'>\5</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>4</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>e</span><span style='color: #D70000;'>\4</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\3</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>g</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\2</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>4</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>e</span><span style='color: #D70000;'>\4</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\3</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>g</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\2</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>2</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>a</span><span style='color: #D70000;'>\5</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>1</span><span></div><div class='input'><span class='fu'>pc</span><span class='op'>(</span><span class='va'>x</span>, <span class='fu'>pn</span><span class='op'>(</span><span class='va'>y</span>, <span class='fl'>2</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #808080;'><</span><span style='color: #808080;font-weight: bold;'>Musical phrase</span><span style='color: #808080;'>></span><span>
#> </span><span style='color: #808080;'><</span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #D70000;'>\5</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>4</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>e</span><span style='color: #D70000;'>\4</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\3</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>g</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\2</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>4</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>e</span><span style='color: #D70000;'>\4</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\3</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>g</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\2</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>2</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>a</span><span style='color: #D70000;'>\5</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>1</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>a</span><span style='color: #D70000;'>\5</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>1</span><span></div><div class='input'><span class='fu'>pc</span><span class='op'>(</span><span class='va'>x</span>, <span class='st'>"r1"</span><span class='op'>)</span> <span class='co'># add a simple rest instance</span>
</div><div class='output co'>#> </span><span style='color: #808080;'><</span><span style='color: #808080;font-weight: bold;'>Musical phrase</span><span style='color: #808080;'>></span><span>
#> </span><span style='color: #808080;'><</span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #D70000;'>\5</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>4</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>e</span><span style='color: #D70000;'>\4</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\3</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>g</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\2</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>4</span><span style='color: #808080;'> <</span><span style='color: #00AFFF;font-weight: bold;'>e</span><span style='color: #D70000;'>\4</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>c</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\3</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>g</span><span style='color: #00AFFF;'>'</span><span style='color: #D70000;'>\2</span><span style='color: #808080;'>></span><span style='color: #FFAF00;'>2</span><span style='color: #808080;'> </span><span style='color: #00AFFF;font-weight: bold;'>r</span><span style='color: #FFAF00;'>1</span><span></div><div class='input'><span class='fu'><a href='https://rdrr.io/r/base/class.html'>class</a></span><span class='op'>(</span><span class='fu'>pc</span><span class='op'>(</span><span class='va'>x</span>, <span class='va'>y</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "phrase" "character"</div><div class='input'><span class='fu'><a href='https://rdrr.io/r/base/class.html'>class</a></span><span class='op'>(</span><span class='fu'>pn</span><span class='op'>(</span><span class='va'>y</span>, <span class='fl'>2</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "phrase" "character"</div><div class='input'><span class='fu'><a href='https://rdrr.io/r/base/class.html'>class</a></span><span class='op'>(</span><span class='fu'>pc</span><span class='op'>(</span><span class='va'>x</span>, <span class='st'>"r1"</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "phrase" "character"</div><div class='input'><span class='fu'><a href='https://rdrr.io/r/base/class.html'>class</a></span><span class='op'>(</span><span class='fu'>pn</span><span class='op'>(</span><span class='st'>"r1"</span>, <span class='fl'>2</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "character"</div><div class='input'><span class='fu'><a href='https://rdrr.io/r/base/class.html'>class</a></span><span class='op'>(</span><span class='fu'>pc</span><span class='op'>(</span><span class='st'>"r1"</span>, <span class='st'>"r4"</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "character"</div></span></pre>
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