title: Changing axis type in ZedGraph
body: <p>I have a data of time of consecutive heart beats (in milliseconds) and I'm trying to make a dynamic chart of them. So on XAxis I have XDate variable increased by <code>.AddMilliseconds(heart_beat_time)</code> and on YAxis <code>heart_beat_time</code>.</p>
  
  <p>When I use <code>AxisType.Date</code> it's pretty good. I can change <code>Min</code>, <code>Max</code> and other related values, but when I change to <code>AxisType.DateAsOrdinal</code> I can not see points nor labels. During some debugging it has showed up that Zedgraph does paint the points and labels, but there are very large gaps between consecutive ones.</p>
  
  <p>How can I control <code>DateAsOrdinal</code> Min, Max, MajorStep and so on? There is an answer <a href="https://stackoverflow.com/questions/4952358/format-dateasordinal-xaxis-labels-in-zedgraph">Format DateAsOrdinal xAxis labels in ZedGraph</a> but it doesn't work for me.</p>
  
  <p>There are two reasons I want to make it work:</p>
  
  <ol>
  <li><p>Ordinal seems to be faster (as I got nearly 100k points)</p></li>
  <li><p>With <code>AxisType.Date</code> when I scroll chart automatically it's not showing labels under ticks</p></li>
  </ol>
  
  <p>My code:</p>
  
  <pre><code>myPane.XAxis.Type = AxisType.DateAsOrdinal;
  myPane.XAxis.Scale.MajorStepAuto = false;
  myPane.XAxis.Scale.MinorStepAuto = false;
  myPane.XAxis.Scale.MajorUnit = DateUnit.Minute;
  myPane.XAxis.Scale.MinorUnit = DateUnit.Minute;
  myPane.XAxis.Scale.Format = "HH:mm:ss";
  myPane.XAxis.Scale.Min = Min;
  myPane.XAxis.Scale.Max = Max;
  myPane.XAxis.Scale.MinorStep = minor;
  myPane.XAxis.Scale.MajorStep = major;
  myPane.XAxis.Scale.BaseTic = new XDate(1999, 1, 1, 0, 0, 0, 0);
  myPane.YAxis.Scale.Min = min_rr;
  myPane.YAxis.Scale.Max = max_rr;
  </code></pre>
  
  <p>where</p>
  
  <pre><code>int min_rr = 100;
  int max_rr = 2500;
  XDate Min = new XDate(1999, 1, 1, 0, 0, 0, 0);
  XDate Max = new XDate(1999, 1, 1, 1, 0, 0, 0);
  int minor = 5;
  int major = 10;
  </code></pre>