ref="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>E</th>
      <td><p>a sparse gene (rows) by cell (column) matrix, or a Seurat object. Rows are HUGO symbols.</p></td>
    </tr>
    <tr>
      <th>R</th>
      <td><p>Reference data. If 'default', R is set to GetTrainingData_HPCA().</p></td>
    </tr>
    <tr>
      <th>spring.dir</th>
      <td><p>If using SPRING, directory to categorical_coloring_data.j