skills/tableau-workbook-authoring/resources/templates/executable/gantt-timeline-chart.tbm

<?xml version='1.0' encoding='utf-8' ?>
<bookmark version='18.1' xmlns:user='http://www.tableausoftware.com/xml/user' source-platform='mac'>
<window class='worksheet' name='gantt-timeline-chart'>
  <cards>
        <edge name='left'>
          <strip size='160'>
            <card type='pages' />
            <card type='filters' />
            <card type='marks' />
          </strip>
        </edge>
        <edge name='top'>
          <strip size='2147483647'>
            <card type='columns' />
          </strip>
          <strip size='2147483647'>
            <card type='rows' />
          </strip>
          <strip size='31'>
            <card type='title' />
          </strip>
        </edge>
      </cards>
  <viewpoint>
    <zoom type='entire-view' />
  </viewpoint>
  <simple-id uuid='{00000000-0000-0000-0000-000000000002}' />
</window>
<table>
    <view>
      <datasources>
        <datasource name='Sample - Superstore' />
      </datasources>
      <datasource-dependencies datasource='Sample - Superstore'>
        <column datatype='string' name='[Customer Name]' role='dimension' type='nominal' />
        <column datatype='string' name='[Product Name]' role='dimension' type='nominal' />
        <column datatype='date' name='[Order Date]' role='dimension' type='ordinal' />
        <column datatype='real' name='[Profit]' role='measure' type='quantitative' />
        <column-instance column='[Customer Name]' derivation='None' name='[none:Customer Name:nk]' pivot='key' type='nominal' />
        <column-instance column='[Product Name]' derivation='None' name='[none:Product Name:nk]' pivot='key' type='nominal' />
        <column-instance column='[Profit]' derivation='Sum' name='[sum:Profit:qk]' pivot='key' type='quantitative' />
        <column-instance column='[Order Date]' derivation='Day-Trunc' name='[tdy:Order Date:qk]' pivot='key' type='quantitative' />
      </datasource-dependencies>
      <aggregation value='true' />
    </view>
    <style />
    <panes>
      <pane selection-relaxation-option='selection-relaxation-disallow'>
        <view>
          <breakdown value='auto' />
        </view>
        <mark class='GanttBar' />
        <encodings>
          <color column='[Sample - Superstore].[none:Product Name:nk]' />
          <size column='[Sample - Superstore].[sum:Profit:qk]' />
        </encodings>
      </pane>
    </panes>
    <rows>[Sample - Superstore].[none:Customer Name:nk]</rows>
    <cols>[Sample - Superstore].[tdy:Order Date:qk]</cols>
  </table>
</bookmark>