This sample illustrates lazy laoding feature in chart. Loads data for chart on demand.
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Lazy Load type:
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Minimum:
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Maximum:
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PointLength
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In this example, you can see how to load data for chart on demand. Chart will fire the scrollEnd event, in that can udpate the chart with required data based on point length and axis range. ScrollBar is enabled in the sample and ScrollBar module injected to the chart.
More information on the Trend Lines can be found in this documentation section.