fcd19999608dd4b9e0ca67016a838ca7dce1fd3f
gperez2
  Thu Mar 5 09:46:22 2026 -0800
Documenting the singleCellColumnNames trackDb setting, refs #37176

diff --git src/hg/htdocs/goldenPath/help/barChart.html src/hg/htdocs/goldenPath/help/barChart.html
index 6821bd55d0d..3572f75c55f 100755
--- src/hg/htdocs/goldenPath/help/barChart.html
+++ src/hg/htdocs/goldenPath/help/barChart.html
@@ -442,32 +442,37 @@
   <img src="../../images/barChartFacets2.png" alt="Example2git l of Facets on barCharts" width="700">
 </div>
 <p>
 By then clicking the &quot;unmerge&quot; button next to &quot;tissue&quot; the single bar
 chart will expand with tissue clusters.</p>
 <div class="text-center">
   <img src="../../images/barChartFacets3.png" alt="Example3 of Facets on barCharts" width="700">
 </div>
 <p>
 In these ways the new 
 <a href="trackDb/trackDbHub.html#barChartFacets" target="_blank">barChartFacets</a>,
 <a href="trackDb/trackDbHub.html#barChartStatsUrl" target="_blank">barChartStatsUrl</a>,
 and <a href="trackDb/trackDbHub.html#barChartMerge" target="_blank">barChartMerge</a>
 settings allow users
 to explore the barChart data on the individual details page more closely. One can use the facets
-to further select certain types and also click the columns (val/count/cluster) to arrange
-by numerical value or alphabetical name.</p>
+to further select certain types and also click the columns (<b>val</b>/<b>count</b>/<b>cluster</b>)
+to arrange by numerical value or alphabetical name. The setting
+<a href="trackDb/trackDbHub.html#singleCellColumnNames"
+target="_blank">singleCellColumnNames off</a> can be added to the trackDb to change the display
+column to <b>count</b> instead of the default display <b>cell count</b>. This setting is useful for
+non-single-cell datasets such as bulk RNA-seq, where <b>count</b> represents the number of samples
+or replicates rather than cells.</p>
 <p>
 Also, if you click the &quot;Return to Genome Browser&quot; link, you will see only these
 selection bars are displayed.</p>
 <div class="text-center">
   <img src="../../images/barChartFacets4.png" alt="Example4 of Facets on barCharts" width="700">
 </div>
 <p>
 In this image after making the selections browsing ACE2 the &quot;zoom out&quot; button has
 been clicked to also view nearby genes where the expression of these tissue selections for the
 gene PIR is quite noticeably different.</p>
 
 <h6 id="example7">Example #7</h6>
 <p>
 In this example, we will be using command-line tools that were used to create the single-cell tracks
 available on hg38. For more in-depth examples of these tools, take a look at the following