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POASP.NET Chart axis is displayed discrete rather than continuous for point chart
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copied!<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="https://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><asp:Series Name="DataSeries" XValueType="Double" YValuesPerPoint="25"> // 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 >= 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>

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