title: Exclude text labels on horizontal axis of Excel chart if no data for that particular label
body: <p>In a nutshell, x-axis categories are text (survey location ID #s) and the y-axis is numeric (nutrient concentration value).  There are no data for some of the survey locations so I want to exclude those particular stations from the graph.</p>
  <p>The fixes I've seen are for small data sets but I'm subsetting from a larger dataset.  There has to be a simpler way to fix this than copying and pasting the data every time I need to do a different graph.</p>
  <p>Help!</p>