name of the input column of matrix column
types</td>
</tr>
</tbody>
</table>
<p>The following code gives the approach to adding metadata, appropriate
for this application, relying on <code>Ledger.side</code>, the sign of
<code>E.ktoe</code>, and knowledge about the rows and columns for each
matrix. Each type of network will have its own algorithm for identifying
row names, column names, row types, and column types in a tidy data
frame.</p>
<div class="sourceCode" id="cb2"><pre class="downlit sourceCode r">
