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815
Automatically extend chart when it is 95% full
posted

Can the XamDataChart be set so that it adds free space to the right of the data curve when it is 95% full?   We want this to be more or less 95% but it does not need to be exactly 95%.

Version 11.2 does this when it is 100% full.

Our scenario:
   - XamDataChart v11.2
   - Multiple data curves each bound to a numericYaxis and a numericXaxis.  The numericXaxis is the number of seconds since the start of the data.
  -  New data points being added at about 1 new point per second for each curve.  Points are added at random times for each curve and added on different threads
  - Our users want about 5 to 10 percent of the graph to be free at the right hand side.
            - We load the initial data set into the graph and want the free space to be about 10% of the graph data curve area
           - New data points are added to the graph and consuming the free space on the right hand side
          - When 95% of the graph is filled by the curves, we want to add another 5% of free space to the right of the graph

The current v11.2 xamDataChart will only add extra empty space at the right of the chart when the data curve fills 100% of the width of the graph data curve area.

 

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  • 34510
    Offline posted

    Hi c1427,

    While there is no setting that will do this automatically for you, you can achieve this effect by increasing the NumericXAxis.MaximumValue property to a value greater than the last data curve that was added.  In the code where you add a new data curve, you would check to see if this value is greater than the MaximumValue minus some arbitrary number.  This arbitrary number would represent your 5% of free space.  If your data curve is greater than this then you need to increase MaximumValue to compensate.

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