Wishing every one a happy independence day!
In the last post we enabled Mood Tracker to enter new data in to HealthVault. Before I start this post in details of adding graphing layer let me motivate it by showing what the graph for Mood Tracker looks like -
Fig 1. Graphing Over the 7 days
The interesting aspect here is that we are tracking Mood, Stress and Wellbeing over a period of one week, and looking for patterns in terms of mood, stress and wellbeing correlations. There are better ways to do graphing for this data but this is a simplistic approach.
In order to be able to get data from HealthVault for a specific time period we will have to update the implementation of our GetThings method to allow for a filter for effective date max and min. Notice the interesting formatting we need to do to make DateTime serializable.
private static string EffDateMinXml(DateTime? effDateMin) { if (effDateMin != null) return string.Format(@"<eff-date-min>{0}</eff-date-min>", effDateMin.Value.ToString("yyyy-MM-ddTHH:mm:ss.FFFZ", CultureInfo.InvariantCulture) ); else return ""; }
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.csharpcode .lnum { color: #606060; }Once we are powered with a way to selectively get information from HealthVault we can simply make use of the awesome open-source amCharts library. Infact I added it to the project with one-click using NuGet Package manager (note to self: may be post a version of HealthVault Windows Phone library on NuGet). Here is a snippet of how I configured the SerialChart.
<amq:SerialChart x:Name="EmotionsChart" BorderThickness="1" DataSource="{Binding EmotionList}" CategoryValueMemberPath="FormattedWhen" AxisForeground="White" PlotAreaBackground="Black" GridStroke="DarkGray" Height="463" Width="450"> <amq:SerialChart.Graphs> <amq:LineGraph ValueMemberPath="Mood" Title="Mood" Brush="Blue" StrokeThickness="6" BorderBrush="Cornsilk"/> <amq:LineGraph ValueMemberPath="Stress" Title="Stress" Brush="#8000FF00" StrokeThickness="8" /> <amq:LineGraph ValueMemberPath="Wellbeing" Title="Wellbeing" StrokeThickness="2" Brush="#80FF0000"/> </amq:SerialChart.Graphs> </amq:SerialChart>
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Note that the formatting for the X-Axis is derived by a special property we added to the EmotionalStateModel, it probably is not the right place to add that property.
Over last few days I have implemented an interesting idea to make entering emotional state information easier similar in themes as the original mood tree but more focused on making data entry fun , I call it vMudi.
So next time w’ll look at vMudi.
