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 Set X Axis Rescale trigger value

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KnightHawk Posted - 31 Mar 2016 : 16:35:26

I have a real-time chart that has a time x-axis with a scrolling range of 1 hour. Every second a new data point is added to the graph.

Currently, my RTScrollFrame automatically rescales the associated x-axis coordinates XScaleStart and XScaleStop after the latest added datapoint has a value greater (or equal?) to the current XScaleStop.

I was wondering if there is a built-in RTScrollFrame setting that instead of waiting until the latest added datapoint is greater than the current XScaleStop, the RTScrollFrame can trigger its x-axis rescaling algorithm when the latest datapoint surpasses say, 90% of the coordinates x-axis range?

So instead of the timestamp at 60 minutes causing a rescale, a timestamp of 54 minutes causes a rescale on the chart with an x-axis range of 0 - 60 minutes.

I'm trying to ensure there is always at least 10% whitespace leading the latest datapoint.


QCRTGraphNet Version
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quinncurtis Posted - 01 Apr 2016 : 08:56:27
I understand what you describe. I took a close look at the software and do not see any way to implement a programmable margin on the RTScrollFrame reset trigger.

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