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<h1>Construct a dyad</h1>
<small class="dont-index">Source: <a href='https://github.com/leonawicz/tabr/blob/master/R/chords.R'><code>R/chords.R</code></a></small>
<div class="hidden name"><code>dyad.Rd</code></div>
</div>
<div class="ref-description">
<p>Construct a dyad given one note, an interval, and a direction.</p>
</div>
<pre class="usage"><span class='fu'>dyad</span><span class='op'>(</span>
<span class='va'>notes</span>,
<span class='va'>interval</span>,
reverse <span class='op'>=</span> <span class='cn'>FALSE</span>,
octaves <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"tick"</span>, <span class='st'>"integer"</span><span class='op'>)</span>,
accidentals <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"flat"</span>, <span class='st'>"sharp"</span><span class='op'>)</span>,
key <span class='op'>=</span> <span class='cn'>NULL</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>notes</th>
<td><p>character, a noteworthy string, single notes only, no chords.
Number of timesteps must equal the length of <code>interval</code>.</p></td>
</tr>
<tr>
<th>interval</th>
<td><p>integer or character vector; semitones or interval ID,
respectively. See details.</p></td>
</tr>
<tr>
<th>reverse</th>
<td><p>logical, reverse the transposition direction. Useful when
<code>interval</code> is character.</p></td>
</tr>
<tr>
<th>octaves, accidentals, key</th>
<td><p>See <code><a href='transpose.html'>transpose</a></code>.</p></td>
</tr>
</table>
<h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>
<p>character</p>
<h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>
<p>The <code>interval</code> may be specified by semitones of by common interval name
or abbreviation. See examples.
For a complete list of valid interval names and abbreviations see
<code><a href='mainIntervals.html'>mainIntervals</a></code>.
<code>key</code> enforces the use of sharps or flats. This function is based on
<code>transpose</code>.
<code>notes</code> and <code>interval</code> may be vectors, but must be equal length.
Recycling occurs only if one argument is scalar.</p>
<h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
<div class='dont-index'><p><code><a href='mainIntervals.html'>mainIntervals</a></code></p></div>
<h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
<pre class="examples"><div class='input'><span class='fu'>dyad</span><span class='op'>(</span><span class='st'>"a"</span>, <span class='fl'>4</span><span class='op'>)</span>
</div><div class='output co'>#> <span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>space-delimited time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ad_</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span></div><div class='input'><span class='va'>x</span> <span class='op'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"minor third"</span>, <span class='st'>"m3"</span>, <span class='st'>"augmented second"</span>, <span class='st'>"A2"</span><span class='op'>)</span>
<span class='fu'>dyad</span><span class='op'>(</span><span class='st'>"a"</span>, <span class='va'>x</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>space-delimited time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span></div><div class='input'><span class='fu'>dyad</span><span class='op'>(</span><span class='st'>"c'"</span>, <span class='va'>x</span>, reverse <span class='op'>=</span> <span class='cn'>TRUE</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>space-delimited time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span></div><div class='input'>
<span class='va'>x</span> <span class='op'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"M3"</span>, <span class='st'>"m3"</span>, <span class='st'>"m3"</span>, <span class='st'>"M3"</span>, <span class='st'>"M3"</span>, <span class='st'>"m3"</span>, <span class='st'>"m3"</span><span class='op'>)</span>
<span class='fu'>dyad</span><span class='op'>(</span><span class='va'>letters</span><span class='op'>[</span><span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fl'>3</span><span class='op'>:</span><span class='fl'>7</span>, <span class='fl'>1</span>, <span class='fl'>2</span><span class='op'>)</span><span class='op'>]</span>, <span class='va'>x</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>vectorized time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ce</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>df</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>eg</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>fa</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>gb</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ac</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>bd</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span></div><div class='input'>
<span class='va'>x</span> <span class='op'><-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"P1"</span>, <span class='st'>"m3"</span>, <span class='st'>"M3"</span>, <span class='st'>"P4"</span>, <span class='st'>"P5"</span>, <span class='st'>"P8"</span>, <span class='st'>"M9"</span><span class='op'>)</span>
<span class='fu'>dyad</span><span class='op'>(</span><span class='st'>"c"</span>, <span class='va'>x</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>space-delimited time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #00BBBB;font-weight: bold;'>c</span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ce_</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>ce</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>cf</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>cg</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>cc</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>cd</span><span style='color: #00BBBB;'>'</span><span style='color: #BBBB00;'>></span><span></div><div class='input'><span class='fu'>dyad</span><span class='op'>(</span><span class='st'>"c"</span>, <span class='va'>x</span>, reverse <span class='op'>=</span> <span class='cn'>TRUE</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>space-delimited time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #00BBBB;font-weight: bold;'>c</span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>a</span><span style='color: #00BBBB;'>,</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>a_</span><span style='color: #00BBBB;'>,</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>g</span><span style='color: #00BBBB;'>,</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>f</span><span style='color: #00BBBB;'>,</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #00BBBB;'>,</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>b_</span><span style='color: #00BBBB;'>,,</span><span style='color: #00BBBB;font-weight: bold;'>c</span><span style='color: #BBBB00;'>></span><span></div><div class='input'><span class='fu'>dyad</span><span class='op'>(</span><span class='st'>"d e"</span>, <span class='st'>"m3"</span><span class='op'>)</span>
</div><div class='output co'>#> </span><span style='color: #555555;font-weight: bold;'><Noteworthy string>
#> Format: </span><span>space-delimited time</span><span style='color: #555555;font-weight: bold;'>
#> Values: </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>df</span><span style='color: #BBBB00;'>></span><span> </span><span style='color: #BBBB00;'><</span><span style='color: #00BBBB;font-weight: bold;'>eg</span><span style='color: #BBBB00;'>></span><span></div></span></pre>
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