MouseOverOn band in sweep mode

[mattmobilemedtek]

Hello,

I'm currently working with bands on a ViewXY chart and am running into an issue with the MouseOverOn event. Here is what I'm seeing.

1. I start graphing data at 0 seconds with a 10 second window on the x axis
2. I add a band starting at the 2 second mark and ending at the 6 second mark
3. I wait for the graph sweep line to cycle back over the band
4. I stop the graph at 14 seconds worth of data so part of the band is showing and part isn't
5. I move my mouse across the 12 second mark on the graph and I get a MouseOverOn event for the band even though it has been overwritten with new data.

I added a little bit of code to the Thread-fed multi-channel data example in the latest code 6.4.6 to test. It's attached.

Please let me know if there's a work around for this or if it's being fixed in a future release.

Thanks,
Matt

[ArctionPasi]

Hi Matt,

you are right, the mouse has interactivity with wrong part of Band in the scenario you described.

Please use this as a temporary workaround, it adjust band.ValueBegin as it progresses.

Code: Select all

 private void FeedNewDataToChart(double[][] data)
        {
            m_chart.BeginUpdate();

            ViewXY chartView = m_chart.ViewXY;
            for (int iChannel = 0; iChannel < m_iChannelCount; iChannel++)
            {
                chartView.SampleDataSeries[iChannel].AddSamples(data[iChannel], false);
            }
            m_dLatestX = (double)m_lSamplesOutputted / m_dSamplingFrequency;
            chartView.XAxes[0].ScrollPosition = m_dLatestX;

            //Adjust Band minimum
            double dXLen = chartView.XAxes[0].Maximum - chartView.XAxes[0].Minimum; 
            if(m_dLatestX > dXLen)
            {
                chartView.Bands[0].ValueBegin = Math.Max(m_dLatestX - dXLen + chartView.XAxes[0].SweepingGap/100.0 *dXLen, chartView.Bands[0].ValueBegin); 
            }
            
            m_chart.EndUpdate();

            base.DataGenerated(data[0].Length);
        }

We'll arrange a fix in an assembly pack in a month. Apologies.

[mattmobilemedtek]

Thanks for the workaround. I'll give it a try.