<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>slicearray</title> <link rel="stylesheet" type="text/css" href="csound.css" /> <link rel="stylesheet" type="text/css" href="syntax-highlighting.css" /> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /> <link rel="home" href="index.html" title="The Canonical Csound Reference Manual" /> <link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" /> <link rel="prev" href="sleighbells.html" title="sleighbells" /> <link rel="next" href="slider16.html" title="slider16" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">slicearray</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="sleighbells.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="slider16.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry"> <a id="slicearray"></a> <div class="titlepage"></div> <a id="IndexSlicearray" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">slicearray</span> </h2> <p>slicearray — Take a slice of a vector. </p> </div> <div class="refsect1"> <a id="idm281472889744616"></a> <h2>Description</h2> <p> Take a slice of a vector (one-dimensional k-rate array). </p> </div> <div class="refsect1"> <a id="idm281472889703448"></a> <h2>Syntax</h2> <pre class="synopsis">karray <span class="command"><strong>slicearray</strong></span> kinarray, istart, iend [,istride]</pre> </div> <div class="refsect1"> <a id="idm281472889701320"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>istart</em></span> -- index of the first part of the answer. </p> <p> <span class="emphasis"><em>iend</em></span> -- index of the first element of the answer. </p> <p> <span class="emphasis"><em>istride</em></span> -- increment for source elements (optional), defaults to 1. </p> </div> <div class="refsect1"> <a id="idm281472889697912"></a> <h2>Examples</h2> <p> Here is an example of the slicearray opcode. It uses the file <a class="ulink" href="examples/slicearray.csd" target="_top"><em class="citetitle">slicearray.csd</em></a>. </p> <div class="example"> <a id="idm281472889696056"></a> <p class="title"> <strong>Example 900. Example of the slicearray opcode.</strong> </p> <div class="example-contents"> <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p> <div class="refsect1"> <a id="idm281472709918456"></a> <pre class="programlisting"> <span class="nt"><CsoundSynthesizer></span> <span class="nt"><CsOptions></span> <span class="c1">; Select audio/midi flags here according to platform</span> -n <span class="nt"></CsOptions></span> <span class="nt"><CsInstruments></span> <span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span> <span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span> <span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span> <span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span> <span class="kd">instr</span> <span class="nf">1</span> <span class="c1">;create and fill an array</span> k<span class="n">Arr</span><span class="p">[]</span> <span class="nb">genarray_i</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">9</span> <span class="c1">;print the content</span> <span class="nb">printf</span> <span class="s">"%s"</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="s">"kArr = whole array</span><span class="se">\n</span><span class="s">"</span> k<span class="n">ndx</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">until</span> k<span class="n">ndx</span> <span class="o">==</span> <span class="nb">lenarray</span><span class="p">(</span>k<span class="n">Arr</span><span class="p">)</span> <span class="k">do</span> <span class="nb">printf</span> <span class="s">"kArr[</span><span class="si">%d</span><span class="s">] = %f</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> k<span class="n">ndx</span><span class="o">+</span><span class="mi">1</span><span class="p">,</span> k<span class="n">ndx</span><span class="p">,</span> k<span class="n">Arr</span><span class="p">[</span>k<span class="n">ndx</span><span class="p">]</span> k<span class="n">ndx</span> <span class="o">+=</span> <span class="mi">1</span> <span class="k">od</span> <span class="c1">;build new arrays for the slices</span> k<span class="n">Arr1</span><span class="p">[]</span> <span class="nb">init</span> <span class="mi">5</span> k<span class="n">Arr2</span><span class="p">[]</span> <span class="nb">init</span> <span class="mi">4</span> k<span class="n">Arr3</span><span class="p">[]</span> <span class="nb">init</span> <span class="mi">3</span> <span class="c1">;put in first five and last four elements</span> k<span class="n">Arr1</span> <span class="nb">slicearray</span> k<span class="n">Arr</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">4</span> k<span class="n">Arr2</span> <span class="nb">slicearray</span> k<span class="n">Arr</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">8</span> <span class="c1">; and three values from 1, 1+2 and 1+2+3</span> k<span class="n">Arr3</span> <span class="nb">slicearray</span> k<span class="n">Arr</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">2</span> <span class="c1">;print the content</span> <span class="nb">printf</span> <span class="s">"%s"</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s">kArr1 = slice from index 0 to index 4</span><span class="se">\n</span><span class="s">"</span> k<span class="n">ndx</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">until</span> k<span class="n">ndx</span> <span class="o">==</span> <span class="nb">lenarray</span><span class="p">(</span>k<span class="n">Arr1</span><span class="p">)</span> <span class="k">do</span> <span class="nb">printf</span> <span class="s">"kArr1[</span><span class="si">%d</span><span class="s">] = %f</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> k<span class="n">ndx</span><span class="o">+</span><span class="mi">1</span><span class="p">,</span> k<span class="n">ndx</span><span class="p">,</span> k<span class="n">Arr1</span><span class="p">[</span>k<span class="n">ndx</span><span class="p">]</span> k<span class="n">ndx</span> <span class="o">+=</span> <span class="mi">1</span> <span class="k">od</span> <span class="nb">printf</span> <span class="s">"%s"</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s">kArr2 = slice from index 5 to index 8</span><span class="se">\n</span><span class="s">"</span> k<span class="n">ndx</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">until</span> k<span class="n">ndx</span> <span class="o">==</span> <span class="nb">lenarray</span><span class="p">(</span>k<span class="n">Arr2</span><span class="p">)</span> <span class="k">do</span> <span class="nb">printf</span> <span class="s">"kArr2[</span><span class="si">%d</span><span class="s">] = %f</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> k<span class="n">ndx</span><span class="o">+</span><span class="mi">1</span><span class="p">,</span> k<span class="n">ndx</span><span class="p">,</span> k<span class="n">Arr2</span><span class="p">[</span>k<span class="n">ndx</span><span class="p">]</span> k<span class="n">ndx</span> <span class="o">+=</span> <span class="mi">1</span> <span class="k">od</span> <span class="nb">printf</span> <span class="s">"%s"</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="s">"</span><span class="se">\n</span><span class="s">kArr3 = slice from index 1 to index 5 inc2</span><span class="se">\n</span><span class="s">"</span> k<span class="n">ndx</span> <span class="o">=</span> <span class="mi">0</span> <span class="k">until</span> k<span class="n">ndx</span> <span class="o">==</span> <span class="nb">lenarray</span><span class="p">(</span>k<span class="n">Arr3</span><span class="p">)</span> <span class="k">do</span> <span class="nb">printf</span> <span class="s">"kArr3[</span><span class="si">%d</span><span class="s">] = %f</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> k<span class="n">ndx</span><span class="o">+</span><span class="mi">1</span><span class="p">,</span> k<span class="n">ndx</span><span class="p">,</span> k<span class="n">Arr3</span><span class="p">[</span>k<span class="n">ndx</span><span class="p">]</span> k<span class="n">ndx</span> <span class="o">+=</span> <span class="mi">1</span> <span class="k">od</span> <span class="nb">turnoff</span> <span class="kd">endin</span> <span class="nt"></CsInstruments></span> <span class="nt"><CsScore></span> <span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">1</span> <span class="nt"></CsScore></span> <span class="nt"></CsoundSynthesizer></span> </pre> </div> </div> </div> <p><br class="example-break" /> </p> </div> <div class="refsect1"> <a id="idm281472889691864"></a> <h2>See Also</h2> <p> <a class="link" href="vectorial.html" title="Vectorial Opcodes"><em class="citetitle"></em>Vectorial opcodes</a> </p> </div> <div class="refsect1"> <a id="idm281472889689816"></a> <h2>Credits</h2> <p> </p> <table border="0" summary="Simple list" class="simplelist"> <tr> <td>Author: John ffitch</td> </tr> <tr> <td>Codemist Ltd</td> </tr> <tr> <td>2013</td> </tr> </table> <p> </p> <p>New in version 6.00</p> <p>istride argument new in 6.10</p> </div> </div> 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