title: RDLC line chart with auto-scaling Y-Axis, but strictly positive numbers only
body: <p>I am using an RDLC line chart much the way <a href="https://www.aspsnippets.com/Articles/Display-Line-Chart-in-RDLC-Report-in-ASPNet-using-C-and-VBNet.aspx" rel="nofollow noreferrer">as described here</a>. This works fine so far. </p>
  
  <p><strong>My data is strictly positive</strong> and I want to use the auto-scaling feature of the chart. I have set the "Vertical Axis Properties" to Minimum:Auto and Maximum:Auto, and did NOT check the "Always include zero". My data is usually single-digit numbers, but occasionally also zero.</p>
  
  <p>This is how it looks like:</p>
  
  <p><a href="https://i.stack.imgur.com/itPkR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/itPkR.png" alt="2 Example charts with different data"></a></p>
  
  <p>Now, in the left chart the data is all zero, and I would like the chart to omit the negative axis part. </p>
  
  <p><strong>How to define an autoscaling Y-Axis and strictly omit negative parts in the axis?</strong> Will I need to use the function type for the limits?</p>
  
  <p>Update: I have tried to use a function expression for the Minimum value:</p>
  
  <pre><code>=Max(0, "Auto")
  </code></pre>
  
  <p>But this did not change anything visibly.</p>