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POSilverlight Toolkit chart control doesnt always show X axis values
 

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  1. POSilverlight Toolkit chart control doesnt always show X axis values
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    <p>I have an Silverlight 5 application which is using the Silverlight Toolkit. Now, the Silverlight Toolkit chart control doesnt always show X axis values when there is only one result in the resultset that returns from my webserivce. </p> <p><img src="https://i.stack.imgur.com/z7h68.png" alt="X-Axis works!!"> <img src="https://i.stack.imgur.com/Y3UBk.png" alt="With 1 item in the resultset, the X-Axis seems to disappear"></p> <p>The first image shows that my chart is loaded properly when selecting a big enough resultset. The second image shows that it doesn't when the resultset exists of 1 item.</p> <p>This is my implementation:</p> <pre><code>TimeSpan monthSpan = TimeSpan.FromDays(30.0); TimeSpan daySpan = TimeSpan.FromDays(1.0); TimeSpan hourSpan = TimeSpan.FromHours(1.0); foreach (TagValueResult res in e.NewItems) { if (res != null) { LineSeries lineSeries = new LineSeries() { Title = string.Format("{0}" + Environment.NewLine + " {2} ({1})", res.Name, res.Attributes["UOM"], res.Attributes["Description"]), ItemsSource = res.Values, DependentValueBinding = new System.Windows.Data.Binding("Value"), IndependentValueBinding = new System.Windows.Data.Binding("Key"), Tag = res, PolylineStyle = Resources["thinLineStyle"] as Style, //DataPointStyle = Resources["dataPointStyle"] as Style }; if (res.Values.Any() &amp;&amp; chart.Series.Any() == false) { TimeSpan graphSpan = res.Values.ToList().Last().Key - res.Values.ToList().First().Key; lineSeries.IndependentAxis = new DateTimeAxis { Minimum = res.Values.ToList().First().Key, Maximum = res.Values.ToList().Last().Key, Interval = 1, Orientation = AxisOrientation.X, Location = AxisLocation.Bottom }; if (graphSpan &gt; monthSpan) { ((DateTimeAxis)lineSeries.IndependentAxis).IntervalType = DateTimeIntervalType.Days; ((DateTimeAxis)lineSeries.IndependentAxis).Interval = 5; } else if (graphSpan &gt; daySpan &amp;&amp; graphSpan &lt; monthSpan) { ((DateTimeAxis)lineSeries.IndependentAxis).IntervalType = DateTimeIntervalType.Days; ((DateTimeAxis)lineSeries.IndependentAxis).Interval = 1; } else if (graphSpan &gt; hourSpan &amp;&amp; graphSpan &lt; daySpan) { ((DateTimeAxis)lineSeries.IndependentAxis).IntervalType = DateTimeIntervalType.Hours; ((DateTimeAxis)lineSeries.IndependentAxis).Interval = 1; } else if (graphSpan &lt; hourSpan) { ((DateTimeAxis)lineSeries.IndependentAxis).IntervalType = DateTimeIntervalType.Minutes; ((DateTimeAxis)lineSeries.IndependentAxis).Interval = 15; } else { //sometimes all comparisons fail, just back up to a safe interval of 1 day. ((DateTimeAxis)lineSeries.IndependentAxis).IntervalType = DateTimeIntervalType.Days; ((DateTimeAxis)lineSeries.IndependentAxis).Interval = 1; } } chart.Series.Add(lineSeries); } } </code></pre> <p>Do you have any idea's? I'm out of possible solutions.</p>
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    1. PO
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    1. USvorrtex
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    1. COYou set the `Maximum` property and the `Minimum` property of the DateTimeAxis object to the same value.
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      1. POSilverlight Toolkit chart control doesnt always show X axis values
      1. USvorrtex
 

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