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‎help/en_US/1_accessing_manipulating_table.html‎

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<p>You can concatenate tables vertically (one below the other) using the vertcat function. This function combines tables by appending the rows of one table to the rows of another table.</p>
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<p>see examples: <b>Vertical Concatenation</b></p>
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<p/>
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<p>
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<b>Convert variable types</b>
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</p>
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<p>You can convert table variables by using the <b>VariableTypes</b> property.</p>
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<p>see examples: <b>VariableTypes</b> example</p>
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<p/>
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<p>
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<b>Summary</b>
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</p>
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T_vert = [T1; T3] % or T_vert = vertcat(T1, T3)
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</code>
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</pre>
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<p>Convert variable types</p>
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<pre>
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<code class = "nelson">Names = {'John'; 'Alice'; 'Bob'; 'Diana'};
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Age = [28; 34; 22; 30];
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Height = [175; 160; 180; 165];
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Weight = [70; 55; 80; 60];
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T = table(Names, Age, Height, Weight);
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T.Properties.VariableTypes
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T{:,1}
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T{:,2}
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T.Properties.VariableTypes = ["string" "int8" "double" "double"];
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T{:,1}
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T{:,2}
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T.Properties.VariableTypes
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</code>
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</pre>
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<h3>See also</h3>
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<hr/>
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<td>initial version</td>
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</tr>
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<tr>
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<td>1.10.0</td>
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<td>VariableTypes property</td>
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</tr>
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</table>
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<h3>Author</h3>

‎help/en_US/2_direct_compution_with_table.html‎

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</td>
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<td width = "30%" class = "next">
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<span class = "next"><a href = "array2table.html">array2table &gt;&gt;</a></span>
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<span class = "next"><a href = "3_read_write_table.html">Read/Write table to files &gt;&gt;</a></span>
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</td>
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</tr></table>
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<h3>Example</h3>
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<hr/>
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<p>Adding a New Column</p>
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<p>Direct computation on Tables</p>
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<pre>
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<code class = "nelson">% Create a sample table with sensor data
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T = table([1.5; -2.3; 4.7], [0.5; 1.1; -0.7], [-1; 2; 3], ...
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<td width = "30%" class = "next">
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<span class = "next"><a href = "array2table.html">array2table &gt;&gt;</a></span>
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<span class = "next"><a href = "3_read_write_table.html">Read/Write table to files &gt;&gt;</a></span>
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</td>
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‎help/en_US/3_read_write_table.html‎

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns = "http://www.w3.org/1999/xhtml">
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<!--
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SAME AS NELSON SOFTWARE
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-->
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<head>
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<meta name="generator" content=
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"HTML Generated by Nelson"/>
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<link rel="stylesheet" type="text/css" href="style.css" />
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<link rel="stylesheet" href="mono-blue.css" type="text/css" />
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<script src = "highlight.pack.js" type = "text/javascript">
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</script>
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<script type = "text/javascript">hljs.highlightAll();</script>
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</script>
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<meta http-equiv="Content-Type" content = "text/html; charset=utf-8" />
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<title>Read/Write table to files</title>
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</head>
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<body>
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<div class = "manualnavbar">
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<table width = "100%"><tr>
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<td width="30%" class="previous">
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<span class="top"><a href="2_direct_compution_with_table.html">&lt;&lt; Direct computation with Table</a></span>
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</td>
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<td width="40%" class="center">
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<span class="top"><a href="chapter_table.html">Tables</a></span>
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</td>
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<td width = "30%" class = "next">
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<span class = "next"><a href = "array2table.html">array2table &gt;&gt;</a></span>
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</td>
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</tr></table>
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<hr />
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<h1 class="refname">Read/Write table to files</h1>
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<hr/>
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<h3>Description</h3>
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<p></p>
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<p>Nelson provides extensive capabilities for reading and writing tables to files, supporting both text-based and binary storage formats to meet different data management needs.</p>
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<p>Text files (.csv, .txt, etc.):</p>
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<ul>
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<li>writetable() exports tables to delimited text files with customizable separators</li>
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<li>readtable() imports tables from delimited text files with automatic format detection</li>
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<li>Text files preserve variable names and data in human-readable format</li>
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</ul>
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<p>Binary file:</p>
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<ul>
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<li>Nelson HDF5 format (.nh5):
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<ul><li>Efficient binary storage using HDF5 format</li><li>Preserves all table metadata and data types</li><li>Use save -nh5 and load commands</li></ul>
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</li>
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</ul>
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<p>Binary format is recommended for preserving exact numeric precision and working with large datasets.</p>
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<h3>Examples</h3>
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<hr/>
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<p>Read/Write table to .nh5 file</p>
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<pre>
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<code class = "nelson">% Create a sample table with sensor data
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T = table([1.5; -2.3; 4.7], [0.5; 1.1; -0.7], [-1; 2; 3], 'VariableNames', {'Voltage', 'Current', 'Resistance'});
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R = T;
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filename = [tempdir(), 'table_example.nh5'];
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save(filename, '-nh5', 'T');
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clear T
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load(filename, 'T');
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assert(isequal(T, R));
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T
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</code>
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</pre>
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<p>Read/Write table to text file</p>
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<pre>
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<code class = "nelson">% Create a sample table with sensor data
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T = table([1.5; -2.3; 4.7], [0.5; 1.1; -0.7], [-1; 2; 3], 'VariableNames', {'Voltage', 'Current', 'Resistance'});
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filename = [tempdir(), 'table_example.csv'];
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writetable(T, filename);
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T2 = readtable(filename);
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</code>
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</pre>
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<h3>See also</h3>
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<hr/>
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<p>
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<a href = "writetable.html" class = "link">writetable</a>, <a href = "readtable.html" class = "link">readtable</a>, <a href = "load.html" class = "link">load</a>, <a href = "save.html" class = "link">save</a>.</p>
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<h3>History</h3>
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<hr/>
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<table summary = "history" style="width:50%">
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<tr>
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<th>Version</th>
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<th>Description</th>
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</tr>
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<tr>
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<td>1.10.0</td>
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<td>initial version</td>
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</tr>
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</table>
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<h3>Author</h3>
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<hr/>
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<p>Allan CORNET</p>
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<div class = "manualnavbar">
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<table width = "100%"><tr>
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<td width="30%" class="previous">
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<span class="top"><a href="2_direct_compution_with_table.html">&lt;&lt; Direct computation with Table</a></span>
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</td>
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<td width="40%" class="center">
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<span class="top"><a href="chapter_table.html">Tables</a></span>
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</td>
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<td width = "30%" class = "next">
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<span class = "next"><a href = "array2table.html">array2table &gt;&gt;</a></span>
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</td>
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</tr></table>
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<hr />
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</body>
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</html>
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‎help/en_US/COM_xlswrite.html‎

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‎help/en_US/actxGetRunningServer.html‎

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<html xmlns = "http://www.w3.org/1999/xhtml">
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<!--
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SAME AS NELSON SOFTWARE
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-->
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<head>
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<meta name="generator" content=
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"HTML Generated by Nelson"/>
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<link rel="stylesheet" type="text/css" href="style.css" />
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<link rel="stylesheet" href="mono-blue.css" type="text/css" />
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<script src = "highlight.pack.js" type = "text/javascript">
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</script>
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<script type = "text/javascript">hljs.highlightAll();</script>
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</script>
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<meta http-equiv="Content-Type" content = "text/html; charset=utf-8" />
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<title>actxGetRunningServer</title>
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</head>
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<body>
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<div class = "manualnavbar">
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<table width = "100%"><tr>
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<td width="30%" class="previous">
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<span class="top"><a href="COM_xlswrite.html">&lt;&lt; COM_xlswrite</a></span>
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</td>
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<td width="40%" class="center">
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<span class="top"><a href="chapter_com_engine.html">COM engine</a></span>
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</td>
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<td width = "30%" class = "next">
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<span class = "next"><a href = "actxcontrollist.html">actxcontrollist &gt;&gt;</a></span>
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</td>
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</tr></table>
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<hr />
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<h1 class="refname">actxGetRunningServer</h1>
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<h3>Handle to running instance of Automation server.</h3>
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<hr/>
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<h3>Syntax</h3>
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<hr/>
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<table summary="syntax" style="width:50%">
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<tr>
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<td>h = actxGetRunningServer(progid)</td>
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</tr>
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</table>
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<h3>Input argument</h3>
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<hr/>
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<dl>
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<dt><span class="term">progid</span></dt>
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<dd>
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<p class="para">a string: the name of a COM server.</p>
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</dd>
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</dl>
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<h3>Output argument</h3>
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<hr/>
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<dl>
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<dt><span class="term">h</span></dt>
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<dd>
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<p class="para">a COM object.</p>
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</dd>
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</dl>
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<h3>Description</h3>
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<hr/>
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<p></p>
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<p><b>h = actxGetRunningServer(progid)</b> gets a reference to a running instance of the OLE/COM Automation server.</p>
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<p><b>progid</b> is the programmatic identifier of the Automation server object and <b>h</b> is the handle to the default interface of the server object.</p>
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<p>The function returns an error if the server specified by progid is not currently running or if the server object is not registered.</p>
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<p>When multiple instances of the Automation server are running, the operating system controls the behavior of this function.</p>
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<h3>Example</h3>
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<hr/>
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<pre>
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<code class = "nelson">h = actxGetRunningServer('Excel.application')
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</code>
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</pre>
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<h3>See also</h3>
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<hr/>
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<p>
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<a href = "actxserver.html" class = "link">actxserver</a>.</p>
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<h3>History</h3>
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<hr/>
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<table summary = "history" style="width:50%">
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<tr>
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<th>Version</th>
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<th>Description</th>
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</tr>
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<tr>
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<td>1.0.0</td>
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<td>initial version</td>
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</tr>
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</table>
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<h3>Author</h3>
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<hr/>
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<p>Allan CORNET</p>
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<div class = "manualnavbar">
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<table width = "100%"><tr>
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<td width="30%" class="previous">
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<span class="top"><a href="COM_xlswrite.html">&lt;&lt; COM_xlswrite</a></span>
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</td>
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<td width="40%" class="center">
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<span class="top"><a href="chapter_com_engine.html">COM engine</a></span>
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</td>
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<td width = "30%" class = "next">
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<span class = "next"><a href = "actxcontrollist.html">actxcontrollist &gt;&gt;</a></span>
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</td>
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</tr></table>
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<hr />
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</body>
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</html>
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‎help/en_US/actxcontrollist.html‎

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<span class="top"><a href="actxGetRunningSrv.html">&lt;&lt; actxGetRunningSrv</a></span>
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<span class="top"><a href="actxGetRunningServer.html">&lt;&lt; actxGetRunningServer</a></span>
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<span class="top"><a href="actxGetRunningSrv.html">&lt;&lt; actxGetRunningSrv</a></span>
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<span class="top"><a href="actxGetRunningServer.html">&lt;&lt; actxGetRunningServer</a></span>
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