ASP.NET Chart axis is displayed discrete rather than continuous for point chart
<p>I am using the standard ASP.NET Chart control to create a point graph from the following data:</p>

<pre><code>X         Y 
32.6768,  1
32.6768,  2
32.6768,  3
32.6768,  4
32.678,   5
32.678,   6
187.862,  1
187.862,  2
</code></pre>

<p>The data is read into a <code>DataTable</code> parsed as <code>Double</code> type to which the chart is data bound. The control finds the data and draws it, but not as expected, as shown below:</p>

<p><img src="http://i.stack.imgur.com/XWM3h.png" alt="ASP.NET Chart"></p>

<p>As the image shows, the axis is discrete rather than continuous. The label are displayed fine including individual data points. The following settings have been set in the code:</p>

<p>ASP.NET:</p>

<pre><code>&lt;asp:Series Name="DataSeries" XValueType="Double" YValuesPerPoint="25"&gt;
// 25 used in case other data sets are larger
</code></pre>

<p>C# Backend:</p>

<pre><code>chtData.Series["DataSeries"].ChartType = SeriesChartType.Point;

DataView dv = new DataView(/* DataTable Instance */);
chtData.Series["DataSeries"].Points.DataBind(dv, /* X-axis column title */, */ Y-axis column title */, "");
</code></pre>

<p>Are there any additional properties I should be settings to correct the chart display? Is it a <code>ChartArea</code> issue rather than a <code>Series</code> issue?</p>

<p>As requested, here is the code to populate the <code>DataTable</code> instance. The data from an incoming string is split into individual lines (by the <code>\n</code> character). Each line is then split by whitespace between the values:</p>

<pre><code>string[] row = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (!columnsFound)
{
    // columns: int to hold number of columns required in DataTable
    columns = row.GetLength(0);
    columnsFound = true;
    if (columns == 4) this.DataPoints.Columns.Add("Label");    // Labels for data points
    this.DataPoints.Columns.Add(this.XAxis);    // string with X-axis label
    this.DataPoints.Columns.Add(this.YAxis);    // string with Y-axis label
    if (columns &gt;= 3) this.DataPoints.Columns.Add(this.ColumnThree);    // string with label for a third data column - not used in the graph
}
if (columns == 4) this.DataPoints.Rows.Add(row[0], double.Parse(row[1]), double.Parse(row[2]), double.Parse(row[3]));
else if (columns == 3) this.DataPoints.Rows.Add(double.Parse(row[0]), double.Parse(row[1]), double.Parse(row[2]));
else this.DataPoints.Rows.Add(double.Parse(row[0]), double.Parse(row[1]));
</code></pre>
