Darien Figueroa
This is the latest working repository used in our demo video for the Maxim to display temperature readings on Bluetooth
Diff: hspguisourcev301/HspGuiSourceV301/HSPGui/MedicalChartHelper.cs
- Revision:
- 3:36de8b9e4b1a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hspguisourcev301/HspGuiSourceV301/HSPGui/MedicalChartHelper.cs Sat Apr 10 03:05:42 2021 +0000
@@ -0,0 +1,705 @@
+//using System;
+//using System.Collections;
+//using System.Collections.Generic;
+//using System.ComponentModel;
+//using System.Linq;
+//using System.Text;
+//using System.Windows.Forms;
+//using Microsoft.Win32.SafeHandles;
+
+namespace Maxim.MAX30101
+{
+#pragma warning disable 1574
+ /// <summary>
+ /// MedicalChartHelper class, an invisible "helper" class,
+ /// helps manage an existing standard chart object.
+ ///
+ /// Initializes the standard
+ /// System.Windows.Forms.DataVisualization.Charting.Chart chart
+ /// with a maximum of 3 chart areas vertically aligned with each other.
+ ///
+ /// When data is appended to the chart, the chart series data
+ /// is initially aligned with the left. Once the X axis reaches the
+ /// right side of the screen, the chart begins scrolling so that
+ /// newest data is aligned to the right edge.
+ ///
+ /// </summary>
+#pragma warning restore 1574
+ public class MedicalChartHelper
+ {
+ private System.Windows.Forms.DataVisualization.Charting.Chart _chart;
+ private string _chartArea1Name;
+ private string _chartArea2Name;
+ private string _chartArea3Name;
+ private string _series1Name;
+ private string _series2Name;
+ private string _series3Name;
+ private string _chartArea1AxisYTitle;
+ private string _chartArea2AxisYTitle;
+ private string _chartArea3AxisYTitle;
+
+ /// <summary>
+ /// Constructor
+ /// </summary>
+ /// <param name="chart"></param>
+ /// <param name="chartArea1Name"></param>
+ /// <param name="series1Name"></param>
+ /// <param name="chartArea1AxisYTitle"></param>
+ /// <param name="chartArea2Name"></param>
+ /// <param name="series2Name"></param>
+ /// <param name="chartArea2AxisYTitle"></param>
+ /// <param name="chartArea3Name"></param>
+ /// <param name="series3Name"></param>
+ /// <param name="chartArea3AxisYTitle"></param>
+ public MedicalChartHelper(System.Windows.Forms.DataVisualization.Charting.Chart chart,
+ string chartArea1Name = "ChartArea1Red", string series1Name = "SeriesRed", string chartArea1AxisYTitle = "Red ADC Code",
+ string chartArea2Name = "ChartArea2IR", string series2Name = "SeriesIR", string chartArea2AxisYTitle = "IR ADC Code",
+ string chartArea3Name = "ChartArea3Green", string series3Name = "SeriesGreen", string chartArea3AxisYTitle = "Green ADC Code",
+ DataFormats dataFormat = DataFormats.FormatUnsigned
+ )
+ {
+ // implementation: see InitCharting()
+ // default X axis length should be 10 seconds of data
+ _chart = chart;
+ _chartArea1Name = chartArea1Name;
+ _chartArea2Name = chartArea2Name;
+ _chartArea3Name = chartArea3Name;
+ _series1Name = series1Name;
+ _series2Name = series2Name;
+ _series3Name = series3Name;
+ _chartArea1AxisYTitle = chartArea1AxisYTitle;
+ _chartArea2AxisYTitle = chartArea2AxisYTitle;
+ _chartArea3AxisYTitle = chartArea3AxisYTitle;
+
+ DataFormat = dataFormat;
+
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ //_xCount = 0;
+ _xCount1 = 0;
+ _xCount2 = 0;
+ _xCount3 = 0;
+
+ _chart.Titles[0].Visible = false;
+
+ _chart.ChartAreas[_chartArea2Name].AlignWithChartArea = _chartArea1Name;
+ _chart.ChartAreas[_chartArea3Name].AlignWithChartArea = _chartArea1Name;
+
+ _chart.ChartAreas[_chartArea1Name].AxisY.Title = chartArea1AxisYTitle;
+ _chart.ChartAreas[_chartArea2Name].AxisY.Title = chartArea2AxisYTitle;
+ _chart.ChartAreas[_chartArea3Name].AxisY.Title = chartArea3AxisYTitle;
+
+ //_chart.ChartAreas[_chartArea1Name].AxisX.LabelStyle.Enabled = !_plotXAxisNoLabels;
+ //_chart.ChartAreas[_chartArea2Name].AxisX.LabelStyle.Enabled = !_plotXAxisNoLabels;
+ //_chart.ChartAreas[_chartArea3Name].AxisX.LabelStyle.Enabled = !_plotXAxisNoLabels;
+
+ _chart.ChartAreas[_chartArea1Name].Visible = true; // valid_Red;
+ _chart.ChartAreas[_chartArea2Name].Visible = true; // valid_IR;
+ _chart.ChartAreas[_chartArea3Name].Visible = true; // valid_Green;
+
+ _chart.Series[_series1Name].MarkerSize = 1; // Charting.Series.MarkerSize=0 makes no points visible
+ _chart.Series[_series1Name].BorderWidth = 1; // Charting.Series.BorderWidth is actually the line thickness
+ _chart.Series[_series1Name].XValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.UInt32;
+ _chart.Series[_series1Name].YValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.Int32;
+
+ _chart.Series[_series2Name].MarkerSize = 1; // Charting.Series.MarkerSize=0 makes no points visible
+ _chart.Series[_series2Name].BorderWidth = 1; // Charting.Series.BorderWidth is actually the line thickness
+ _chart.Series[_series2Name].XValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.UInt32;
+ _chart.Series[_series2Name].YValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.Int32;
+
+ _chart.Series[_series3Name].MarkerSize = 1; // Charting.Series.MarkerSize=0 makes no points visible
+ _chart.Series[_series3Name].BorderWidth = 1; // Charting.Series.BorderWidth is actually the line thickness
+ _chart.Series[_series3Name].XValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.UInt32;
+ _chart.Series[_series3Name].YValueType = System.Windows.Forms.DataVisualization.Charting.ChartValueType.Int32;
+ }
+
+ /// <summary>
+ /// Clear chart data, reset _xCount, reset _plotPointsToSkip
+ /// </summary>
+ public void Clear()
+ {
+ _chart.Series[_series1Name].Points.Clear();
+ _chart.Series[_series2Name].Points.Clear();
+ _chart.Series[_series3Name].Points.Clear();
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ //_xCount = 0;
+ _xCount1 = 0;
+ _xCount2 = 0;
+ _xCount3 = 0;
+ _plotPointsToSkip = 0;
+ // https://jira.maxim-ic.com/browse/OS24EVK-32 replace numPlotTime with menu item Options | Plot Time
+ _plotPoints = (int)_plotWindowTime * _SampleRate_Hz / SampleAverage_n;
+ if (_plotPoints > _maxPlotPoints)
+ {
+ _plotPointsToSkip = _plotPoints / _maxPlotPoints - 1;
+ _plotPoints = _maxPlotPoints;
+ }
+ }
+
+ /// <summary>
+ /// Replacement for plotXAxisNoLabelsToolStripMenuItem.Checked
+ /// </summary>
+ public bool plotXAxisNoLabels {
+ get { return _plotXAxisNoLabels; }
+ set
+ {
+ _plotXAxisNoLabels = value;
+ _chart.ChartAreas[_chartArea1Name].AxisX.LabelStyle.Enabled = !_plotXAxisNoLabels;
+ _chart.ChartAreas[_chartArea2Name].AxisX.LabelStyle.Enabled = !_plotXAxisNoLabels;
+ _chart.ChartAreas[_chartArea3Name].AxisX.LabelStyle.Enabled = !_plotXAxisNoLabels;
+ }
+ }
+ private bool _plotXAxisNoLabels = true; // VERIFY: default plotXAxisNoLabelsToolStripMenuItem.Checked
+
+ /// <summary>
+ /// Replacement for plotXAxisTimeToolStripMenuItem.Checked
+ /// </summary>
+ public bool plotXAxisTime
+ {
+ get { return _plotXAxisTime; }
+ set
+ {
+ _plotXAxisTime = value;
+ }
+ }
+ private bool _plotXAxisTime = true; // VERIFY: default plotXAxisTimeToolStripMenuItem.Checked
+
+ private int _SampleRate_Hz = 100;
+ /// <summary>
+ /// Sample rate. Replacement for int.Parse(cboSampleRate.Text)
+ /// </summary>
+ public int SampleRate_Hz
+ {
+ get { return _SampleRate_Hz; }
+ set
+ {
+ _SampleRate_Hz = value;
+
+ //_AutoScaleEveryNSamples = 4 * _SampleRate_Hz; // 4 seconds assuming sample rate int.Parse(cboSampleRate.Text) == 100 samples per second
+
+ // VERIFY: OS24EVK-73 Sample Avg 2 breaks chart scrolling
+ // update _plotPoints which depends on myMAX30101.SampleAverage_n
+ _plotPoints = (int)_plotWindowTime * _SampleRate_Hz / SampleAverage_n;
+ if (_plotPoints > _maxPlotPoints)
+ {
+ _plotPointsToSkip = _plotPoints / _maxPlotPoints - 1;
+ _plotPoints = _maxPlotPoints;
+ }
+ }
+ }
+
+ private int _SampleAverage_n = 1;
+ /// <summary>
+ /// Replacement for myMAX30101.SampleAverage_n
+ /// </summary>
+ public int SampleAverage_n
+ {
+ get { return _SampleAverage_n; }
+ set
+ {
+ _SampleAverage_n = value;
+ // VERIFY: OS24EVK-73 Sample Avg 2 breaks chart scrolling
+ // update _plotPoints which depends on myMAX30101.SampleAverage_n
+ _plotPoints = (int)_plotWindowTime * _SampleRate_Hz / SampleAverage_n;
+ if (_plotPoints > _maxPlotPoints)
+ {
+ _plotPointsToSkip = _plotPoints / _maxPlotPoints - 1;
+ _plotPoints = _maxPlotPoints;
+ }
+ }
+ }
+
+ // VERIFY: IMPLEMENT OS24EVK-70 Maxim.MAX30101.MedicalChartHelper._xCount int instead of double?
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ //public double _xCount = 0;
+ public int _xCount1 = 0;
+ public int _xCount2 = 0;
+ public int _xCount3 = 0;
+
+ /// <summary>
+ /// The actual number of points on the plot (<= _maxPlotPoints). The actual number of points may be less than _maxPlotPoints in order to maintain ~numPlotTime.Value of plotted data
+ /// </summary>
+ public int _plotPoints = 500;
+
+ private int _plotWindowTime = 5; // plot window in seconds
+ public int plotWindowTime
+ {
+ get
+ {
+ return _plotWindowTime;
+ }
+ set
+ {
+ _plotWindowTime = value;
+ _plotPoints = (int)_plotWindowTime * _SampleRate_Hz / SampleAverage_n;
+ if (_plotPoints > _maxPlotPoints)
+ {
+ _plotPointsToSkip = _plotPoints / _maxPlotPoints - 1;
+ _plotPoints = _maxPlotPoints;
+ }
+ }
+ }
+
+ private int _maxPlotPoints = 2000; // maximum allowed number of points that can be plotted per series. Higher Fs will have more than 500 pts for a given numPlotTime.Value, so the number of samples per point will need to be increased accordingly to give maximum _maxPlotPoints
+
+ public int _plotPointsToSkip = 0;
+
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 Autoscale tuning parameters
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 Change _AutoScaleTimeInterval to _AutoScaleEveryNSamples and use sampleNumber to measure time
+ // https://jira.maxim-ic.com/browse/OS24EVK-42 Autoscale tuning (Larry 2014-11-24) _AutoScaleEveryNSamples
+ // - Slow the Autoscale update rate every 4 seconds
+ //private int _AutoScaleEveryNSamples = 400; // 4 seconds assuming sample rate int.Parse(cboSampleRate.Text) == 100 samples per second
+
+ // private double _AutoScaleMarginXLeft; // ignore old data at left of graph
+ // private double _AutoScaleMarginXRight; // ignore new data at right of graph? probably 0 by default
+
+ /// <summary>
+ /// chartMax empty area above dataMax
+ /// </summary>
+ private static double _AutoScaleMarginYTop = 0.125;
+
+ /// <summary>
+ /// chartMin empty area below dataMin
+ /// </summary>
+ private static double _AutoScaleMarginYBottom = 0.125;
+
+ /// <summary>
+ /// Minimum Y span: allow up to 10 counts per division (i.e. 50 LSBs)
+ ///
+ /// (5 * _AutoScaleYmultiples) minimum allowed span of chartMax-chartMin,
+ /// to avoid focusing on LSB noise
+ /// </summary>
+ private static double _AutoScaleMinSpanY = 500;
+
+ /// <summary>
+ /// Y axis: No decimals. Round to nearest multiple of 100.
+ /// </summary>
+ private static double _AutoScaleYmultiples = 100;
+
+ // Calculated initial default chart limits _AutoscaleInitialChartMaxY .. _AutoscaleInitialChartMinY
+ int _AutoscaleInitialChartMaxY =
+ (
+ (int)
+ ((_AutoScaleMinSpanY * (1.0 + _AutoScaleMarginYTop + _AutoScaleMarginYBottom)) / _AutoScaleYmultiples)
+ )
+ * (int)(_AutoScaleYmultiples);
+ int _AutoscaleInitialChartMinY = 0;
+
+ /// <summary>
+ /// Append data to chart area 1 series 1 (Optical: Red. Accelerometer: X)
+ ///
+ /// @post _xCount1 is updated
+ /// </summary>
+ /// <param name="rawIntArrayYData"></param>
+ /// <param name="firstNewXIndex"></param>
+ /// <param name="lastXIndex"></param>
+ public void AppendDataChartArea1(int[] rawIntArrayYData, int firstNewXIndex, int lastXIndex)
+ {
+ // AppendDataChartArea(_chartArea1Name, _series1Name, rawIntArrayYData, firstNewXIndex, lastXIndex);
+ string chartAreaName = _chartArea1Name;
+ string seriesName = _series1Name;
+
+ for (int index = firstNewXIndex; index <= lastXIndex; index++)
+ {
+ int yData = rawIntArrayYData[index];
+ // VERIFY: OS24EVK-75 replace AutoScaleEvaluate dataFormatIs16bit2sComplement with if (DataFormat == DataFormats.Format16bit2sComplement)
+ if (DataFormat == DataFormats.Format16bit2sComplement)
+ {
+ // VERIFY: OS24EVK-57 interpret rawX rawY rawZ as 16-bit 2's complement
+ if (yData > 0x8000)
+ {
+ yData = yData - 0x10000;
+ }
+ }
+ int count = _chart.Series[seriesName].Points.Count;
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ double xCoord = _xCount1 * (_plotPointsToSkip + 1) * SampleAverage_n / (plotXAxisTime ? SampleRate_Hz : 1);
+
+ //_chart.Series[seriesName].Points.AddXY(xCoord, yData);
+ _chart.Series[seriesName].Points.AddY(yData);
+ _chart.ResetAutoValues();
+
+ while (count > _plotPoints)
+ {
+ _chart.Series[seriesName].Points.RemoveAt(0);
+ count = _chart.Series[seriesName].Points.Count;
+ }
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ _xCount1++;
+ }
+ //AutoScaleEvaluate(e.rawRedData, e.sampleNumberOffset, numSamples - 1, _chart, chartAreaName);
+ }
+
+ /// <summary>
+ /// Append data to chart area 2 series 2 (Optical: IR. Accelerometer: Y)
+ ///
+ /// @post _xCount2 is updated
+ /// </summary>
+ /// <param name="rawIntArrayYData"></param>
+ /// <param name="firstNewXIndex"></param>
+ /// <param name="lastXIndex"></param>
+ public void AppendDataChartArea2(int[] rawIntArrayYData, int firstNewXIndex, int lastXIndex)
+ {
+ // AppendDataChartArea(_chartArea2Name, _series2Name, rawIntArrayYData, firstNewXIndex, lastXIndex);
+ string chartAreaName = _chartArea2Name;
+ string seriesName = _series2Name;
+
+ for (int index = firstNewXIndex; index <= lastXIndex; index++)
+ {
+ int yData = rawIntArrayYData[index];
+ // VERIFY: OS24EVK-75 replace AutoScaleEvaluate dataFormatIs16bit2sComplement with if (DataFormat == DataFormats.Format16bit2sComplement)
+ if (DataFormat == DataFormats.Format16bit2sComplement)
+ {
+ // VERIFY: OS24EVK-57 interpret rawX rawY rawZ as 16-bit 2's complement
+ if (yData > 0x8000)
+ {
+ yData = yData - 0x10000;
+ }
+ }
+ int count = _chart.Series[seriesName].Points.Count;
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ double xCoord = _xCount2 * (_plotPointsToSkip + 1) * SampleAverage_n / (plotXAxisTime ? SampleRate_Hz : 1);
+
+ _chart.Series[seriesName].Points.AddXY(xCoord, yData);
+ _chart.ResetAutoValues();
+
+ while (count > _plotPoints)
+ {
+ _chart.Series[seriesName].Points.RemoveAt(0);
+ count = _chart.Series[seriesName].Points.Count;
+ }
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ _xCount2++;
+ }
+ //AutoScaleEvaluate(e.rawRedData, e.sampleNumberOffset, numSamples - 1, _chart, chartAreaName);
+ }
+
+ /// <summary>
+ /// Append data to chart area 3 series 3 (Optical: Green. Accelerometer: Z)
+ ///
+ /// @post _xCount3 is updated
+ /// </summary>
+ /// <param name="rawIntArrayYData"></param>
+ /// <param name="firstNewXIndex"></param>
+ /// <param name="lastXIndex"></param>
+ public void AppendDataChartArea3(int[] rawIntArrayYData, int firstNewXIndex, int lastXIndex)
+ {
+ // AppendDataChartArea(_chartArea3Name, _series3Name, rawIntArrayYData, firstNewXIndex, lastXIndex);
+ string chartAreaName = _chartArea3Name;
+ string seriesName = _series3Name;
+
+ for (int index = firstNewXIndex; index <= lastXIndex; index++)
+ {
+ int yData = rawIntArrayYData[index];
+ // VERIFY: OS24EVK-75 replace AutoScaleEvaluate dataFormatIs16bit2sComplement with if (DataFormat == DataFormats.Format16bit2sComplement)
+ if (DataFormat == DataFormats.Format16bit2sComplement)
+ {
+ // VERIFY: OS24EVK-57 interpret rawX rawY rawZ as 16-bit 2's complement
+ if (yData > 0x8000)
+ {
+ yData = yData - 0x10000;
+ }
+ }
+ int count = _chart.Series[seriesName].Points.Count;
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ double xCoord = _xCount3 * (_plotPointsToSkip + 1) * SampleAverage_n / (plotXAxisTime ? SampleRate_Hz : 1);
+
+ _chart.Series[seriesName].Points.AddXY(xCoord, yData);
+ _chart.ResetAutoValues();
+
+ while (count > _plotPoints)
+ {
+ _chart.Series[seriesName].Points.RemoveAt(0);
+ count = _chart.Series[seriesName].Points.Count;
+ }
+ // VERIFY: OS24EVK-75 replace _xCount with _xCount1, _xCount2, _xCount3
+ _xCount3++;
+ }
+ //AutoScaleEvaluate(e.rawRedData, e.sampleNumberOffset, numSamples - 1, _chart, chartAreaName);
+ }
+
+#if PROFILER
+ //// TODO1: OS24EVK-54 profiling: capture max interval, number of intervals, cumulative interval
+ System.Diagnostics.Stopwatch _profilingStopwatchAutoScaleEvaluate = new System.Diagnostics.Stopwatch(); // cumulative timing
+ int _profilingStopwatchAutoScaleEvaluate_NumIntervals;
+#endif // PROFILER
+
+ public void AutoScaleEvaluate1(int[] rawIntArrayYData, int firstNewXIndex, int lastXIndex)
+ {
+ AutoScaleEvaluate(rawIntArrayYData, firstNewXIndex, lastXIndex, _chartArea1Name);
+ }
+
+ public void AutoScaleEvaluate2(int[] rawIntArrayYData, int firstNewXIndex, int lastXIndex)
+ {
+ AutoScaleEvaluate(rawIntArrayYData, firstNewXIndex, lastXIndex, _chartArea2Name);
+ }
+
+ public void AutoScaleEvaluate3(int[] rawIntArrayYData, int firstNewXIndex, int lastXIndex)
+ {
+ AutoScaleEvaluate(rawIntArrayYData, firstNewXIndex, lastXIndex, _chartArea3Name);
+ }
+
+ // TODO1: OS24EVK-57 OS24EVK-54 AutoScaleEvaluate(int[] rawIntArrayYData,...) Calculate autoscale min/max/SampleVariance from the raw integer data. This should be much faster as it doesn't involve arbitrarily converting into floating-point numbers or excessive indexing.
+ public void AutoScaleEvaluate(int[] rawIntArrayYData,
+ int firstNewXIndex,
+ int lastXIndex,
+ /*Chart chart,*/ string chartAreaName
+ // TODO1: OS24EVK-75 replace AutoScaleEvaluate dataFormatIs16bit2sComplement with if (DataFormat == DataFormats.Format16bit2sComplement)
+ //bool dataFormatIs16bit2sComplement = false
+ //string seriesName,
+ //int sampleNumber,
+ //ref int sampleNumberPreviousAutoscale
+ )
+ {
+#if PROFILER
+ // TODO1: OS24EVK-54 profiling: capture max interval, number of intervals, cumulative interval
+ _profilingStopwatchAutoScaleEvaluate.Start();
+ _profilingStopwatchAutoScaleEvaluate_NumIntervals = _profilingStopwatchAutoScaleEvaluate_NumIntervals + 1;
+#endif // PROFILER
+
+ // TODO1: OS24EVK-57 OS24EVK-54 Calculate autoscale min/max/SampleVariance from the raw integer data. This should be much faster as it doesn't involve arbitrarily converting into floating-point numbers or excessive indexing.
+
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 AutoScaleEvaluate() use _AutoScaleMarginXLeft; // ignore old data at left of graph
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 AutoScaleEvaluate() use _AutoScaleMarginXRight; // ignore new data at right of graph? probably 0 by default
+ //const int firstPointIndex = 0;
+ // advance the left and right X limits
+ // https://jira.maxim-ic.com/browse/OS24EVK-48 Graph X axis - Replace hidden chkPlotTime with a menu option plotXAxisTimeToolStripMenuItem.Checked
+ // https://jira.maxim-ic.com/browse/OS24EVK-47 Graph scrolling needs to be smooth progression like a paper tape chart even when (plotXAxisTimeToolStripMenuItem.Checked is true)
+ // per Larry Skrenes 2014-11-24: graph scrolling needs to be smooth progression like a paper tape chart.
+ // When (plotXAxisTimeToolStripMenuItem.Checked is false) graph scrolling is already smooth.
+ // When (plotXAxisTimeToolStripMenuItem.Checked is true) graph scrolling moves in staccato 1-second steps. Larry hates this.
+ int xWidth = _plotPoints * (_plotPointsToSkip + 1) * SampleAverage_n / (plotXAxisTime ? SampleRate_Hz : 1);
+ // VERIFY: OS24EVK-73 Sample Avg 2 breaks chart scrolling -- xLastXIndex = lastXIndex * myMAX30101.SampleAverage_n
+ int xLastXIndex = lastXIndex * SampleAverage_n / (plotXAxisTime ? SampleRate_Hz : 1);
+ //int xWidth = _plotPoints * (_plotPointsToSkip + 1) * _cboSampleAvg / (false ? int.Parse(cboSampleRate.Text) : 1);
+ //int xWidth = _plotPoints * (_plotPointsToSkip + 1) * _cboSampleAvg / (1);
+ //int xWidth = _plotPoints * (_plotPointsToSkip + 1) * _cboSampleAvg;
+ // https://jira.maxim-ic.com/browse/OS24EVK-15 Fix plot X axis jumping around (_plotWindowTime)
+ // 0.0 --> 0 1 2 3 4 5
+ // 0.0 --> 0_ 1 2 3 4 5
+ // 0.0 --> 0__1 2 3 4 5
+ // 0.0 --> 0__1_ 2 3 4 5
+ // 0.0 --> 0__1__2 3 4 5
+ // 0.0 --> 0__1__2_ 3 4 5
+ // 0.0 --> 0__1__2__3 4 5
+ // 0.0 --> 0__1__2__3_ 4 5
+ // 0.0 --> 0__1__2__3__4 5
+ // 0.0 --> 0__1__2__3__4_ 5
+ // 0.0 --> 0__1__2__3__4__5
+ // 0.5 --> 1__2__3__4__5_ 6
+ // 1.0 --> 1__2__3__4__5__6
+ // 1.5 --> 2__3__4__5__6_ 7
+ // 2.0 --> 2__3__4__5__6__7
+ // https://jira.maxim-ic.com/browse/OS24EVK-47 Graph scrolling needs to be smooth progression like a paper tape chart even when (plotXAxisTimeToolStripMenuItem.Checked is true)
+ // per Larry Skrenes 2014-11-24: graph scrolling needs to be smooth progression like a paper tape chart.
+ // When (plotXAxisTimeToolStripMenuItem.Checked is false) graph scrolling is already smooth.
+ // When (plotXAxisTimeToolStripMenuItem.Checked is true) graph scrolling moves in staccato 1-second steps. Larry hates this.
+ // VERIFY: OS24EVK-76 Autoscale delay time is affected by Sample Average - firstVisiblePointIndex
+ //int firstVisiblePointIndex = lastXIndex - (_plotPoints * (_plotPointsToSkip + 1) * SampleAverage_n);
+ int firstVisiblePointIndex = lastXIndex - (_plotPoints * (_plotPointsToSkip + 1));
+ if (firstVisiblePointIndex < 0) { firstVisiblePointIndex = 0; }
+ //
+ // VERIFY: OS24EVK-73 Sample Avg 2 breaks chart scrolling -- xLastXIndex instead of lastXIndex
+ int firstVisiblePointX = xLastXIndex - xWidth; // (int)chart.Series[0].Points[firstPointIndex].XValue;
+ if (firstVisiblePointX < 0) { firstVisiblePointX = 0; }
+ //int firstPointX = (int)System.Math.Ceiling(chart.Series[seriesName].Points[firstPointIndex].XValue);
+ //if ((chart.Series[seriesName].Points[firstPointIndex].XValue) < 0.1)
+ //{
+ // firstPointX = (int)System.Math.Floor(chart.Series[seriesName].Points[firstPointIndex].XValue);
+ //}
+ _chart.ChartAreas[chartAreaName].AxisX.Minimum = firstVisiblePointX;
+ // https://jira.maxim-ic.com/browse/OS24EVK-47 Graph scrolling needs to be smooth progression like a paper tape chart even when (plotXAxisTimeToolStripMenuItem.Checked is true)
+ //chart.ChartAreas[0].AxisX.Maximum = (int)System.Math.Ceiling((double)firstPointX + xWidth);
+ _chart.ChartAreas[chartAreaName].AxisX.Maximum = firstVisiblePointX + xWidth;
+
+ if (lastXIndex /* chart.Series[seriesName].Points.Count */ < 1)
+ {
+ //int iMaxY_chart_default = (_AutoScaleMinSpanY * (1.0 + _AutoScaleMarginYTop + _AutoScaleMarginYBottom)) / _AutoScaleYmultiples;
+ //int _AutoscaleInitialChartMaxY = iMaxY_chart_default * _AutoScaleYmultiples;
+ //int _AutoscaleInitialChartMaxY =
+ // (
+ // (int)
+ // ((_AutoScaleMinSpanY * (1.0 + _AutoScaleMarginYTop + _AutoScaleMarginYBottom)) / _AutoScaleYmultiples)
+ // )
+ // * (int)(_AutoScaleYmultiples);
+ //int _AutoscaleInitialChartMinY = 0;
+ _chart.ChartAreas[chartAreaName].AxisY.Maximum = _AutoscaleInitialChartMaxY;
+ _chart.ChartAreas[chartAreaName].AxisY.Minimum = _AutoscaleInitialChartMinY;
+#if PROFILER
+ // TODO1: OS24EVK-54 profiling: capture max interval, number of intervals, cumulative interval
+ _profilingStopwatchAutoScaleEvaluate.Stop();
+#endif // PROFILER
+ return;
+ }
+
+ // // TODO1: OS24EVK-57 OS24EVK-54 scan new data rawIntArrayYData[firstNewIndex .. lastIndex]. As is this code only triggers if the last point is extreme.
+ // int newestPointIndex = lastXIndex; // chart.Series[seriesName].Points.Count - 1;
+ // int newestPointY = rawIntArrayYData[lastXIndex]; // (int)chart.Series[seriesName].Points[newestPointIndex].YValues[0];
+ // if ((newestPointY < chart.ChartAreas[chartAreaName].AxisY.Maximum)
+ // && (newestPointY > chart.ChartAreas[chartAreaName].AxisY.Minimum)
+ // )
+ // {
+ // // https://jira.maxim-ic.com/browse/OS24EVK-34 always re-evaluate chart when new data exceeds Minimum or Maximum
+ // // But if we just return at this point, then autoscale will never contract to fit smaller data series.
+ // //
+ // // https://jira.maxim-ic.com/browse/OS24EVK-34 Change _AutoScaleTimeInterval to _AutoScaleEveryNSamples and use sampleNumber to measure time
+ // // https://jira.maxim-ic.com/browse/OS24EVK-34 AutoScaleEvaluate() after every _AutoScaleEveryNSamples, re-scan data and fit chart to data
+ // // if ( interval has been less than _AutoScaleEveryNSamples ) { return; }
+ // if ((sampleNumber - sampleNumberPreviousAutoscale) < _AutoScaleEveryNSamples)
+ // {
+ //#if PROFILER
+ // // TODO1: OS24EVK-54 profiling: capture max interval, number of intervals, cumulative interval
+ // _profilingStopwatchAutoScaleEvaluate.Stop();
+ //#endif // PROFILER
+ // return;
+ // }
+ // }
+
+ int chartMinYValue = (int)_chart.ChartAreas[chartAreaName].AxisY.Minimum; // rawIntArrayYData[firstVisiblePointX] - 1;
+ int chartMaxYValue = (int)_chart.ChartAreas[chartAreaName].AxisY.Maximum; // rawIntArrayYData[firstVisiblePointX] + 1;
+ // VERIFY: OS24EVK-73 Sample Avg 2 breaks chart scrolling - firstVisiblePointIndex instead of firstVisiblePointX
+ int dataMinYValue = rawIntArrayYData[firstVisiblePointIndex] - 1;
+ int dataMaxYValue = rawIntArrayYData[firstVisiblePointIndex] + 1;
+ for (int index = firstVisiblePointIndex; index <= lastXIndex; index++)
+ {
+ int Y = rawIntArrayYData[index];
+ // VERIFY: OS24EVK-57 OS24EVK-54 improve chart throughput: AutoScaleEvaluate() dataFormatIs16bit2sComplement=true for Accelerometer X Y Z data
+ // VERIFY: OS24EVK-75 replace AutoScaleEvaluate dataFormatIs16bit2sComplement with if (DataFormat == DataFormats.Format16bit2sComplement)
+ if (DataFormat == DataFormats.Format16bit2sComplement)
+ {
+ // VERIFY: OS24EVK-57 interpret rawX rawY rawZ as 16-bit 2's complement
+ if (Y > 0x8000)
+ {
+ Y = Y - 0x10000;
+ }
+ }
+ //else
+ //{
+ // Y = Y + 0; // debug breakpoint for code path verification
+ //}
+ if (dataMinYValue > Y)
+ {
+ dataMinYValue = Y;
+ }
+ if (dataMaxYValue < Y)
+ {
+ dataMaxYValue = Y;
+ }
+ }
+ // rawIntArrayYData[firstIndex..lastIndex] spans the range from dataMinYValue .. dataMaxYValue
+ double dataSpanY = (dataMaxYValue - dataMinYValue);
+ double dataCenterY = (dataMaxYValue + dataMinYValue) / 2;
+
+ bool isAllDataVisible = (
+ (chartMinYValue < dataMaxYValue) && (dataMaxYValue < chartMaxYValue)
+ &&
+ (chartMinYValue < dataMinYValue) && (dataMinYValue < chartMaxYValue)
+ );
+ if (isAllDataVisible)
+ {
+ // all data is within the chart limits, but is the chart sufficiently zoomed in?
+ double relativeDataSpan = (double)dataSpanY / (chartMaxYValue - chartMinYValue);
+ if (relativeDataSpan > 0.65)
+ {
+ // the current chart scale is good enough, do not update
+#if PROFILER
+ // TODO1: OS24EVK-54 profiling: capture max interval, number of intervals, cumulative interval
+ _profilingStopwatchAutoScaleEvaluate.Stop();
+#endif // PROFILER
+ return;
+ }
+ }
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 AutoScaleEvaluate() use _AutoScaleMinSpanY; // minimum allowed span of chartMax-chartMin, to avoid focusing on LSB noise
+ if (dataSpanY < _AutoScaleMinSpanY)
+ {
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 Autoscale - Minimum span (in case dataMax-dataMin is too small) to avoid focusing on LSB noise
+ dataSpanY = _AutoScaleMinSpanY;
+ }
+ else
+ {
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 Autoscale - Apply a Top margin - Bottom margin = 12% .. 88% when mapping Chart max-min to Data max-min
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 AutoScaleEvaluate() use _AutoScaleMarginYTop; // chartMax empty area above dataMax
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 AutoScaleEvaluate() use _AutoScaleMarginYBottom; // chartMin empty area below dataMin
+ // dataSpanY = dataSpanY * 1.25;
+ // dataSpanY = dataSpanY * (1.0 + 0.125 + 0.125);
+ dataSpanY = dataSpanY * (1.0 + _AutoScaleMarginYTop + _AutoScaleMarginYBottom);
+
+ // https://jira.maxim-ic.com/browse/OS24EVK-42 Autoscale tuning (Larry 2014-11-24) Round to nearest multiple of 100.
+ // - Y axis: No decimals. Round to nearest multiple of 100.
+ // private double _AutoScaleYmultiples = 100;
+ //int tempdataSpanY = (int)(dataSpanY / _AutoScaleYmultiples);
+ //dataSpanY = tempdataSpanY * _AutoScaleYmultiples;
+ //dataSpanY = (double)((int)dataSpanY / _AutoScaleYmultiples) * _AutoScaleYmultiples;
+ //dataCenterY = (double)((int)dataCenterY / _AutoScaleYmultiples) * _AutoScaleYmultiples;
+ }
+ // https://jira.maxim-ic.com/browse/OS24EVK-34 Autoscale - There are 5 vertical divisions; keep the minor axis tick values integer
+ //int YaxisDivisions = (int)System.Math.Ceiling(dataSpanY / 6.0);
+ //dataSpanY = YaxisDivisions * 6;
+ // https://jira.maxim-ic.com/browse/OS24EVK-42 Autoscale tuning (Larry 2014-11-24) Round to nearest multiple of 100.
+ // - Y axis: No decimals. Round to nearest multiple of 100.
+ // private double _AutoScaleYmultiples = 100;
+ //int tempdataCenterY = (int)(dataCenterY / (_AutoScaleYmultiples*2));
+ //dataCenterY = tempdataCenterY * (_AutoScaleYmultiples*2);
+
+ // chart.ChartAreas[0].AxisY.Maximum = dataMaxYValue;
+ // chart.ChartAreas[0].AxisY.Minimum = dataMinYValue;
+ //chart.ChartAreas[0].AxisY.Maximum = System.Math.Ceiling(dataCenterY + (dataSpanY / 2)); // dataMaxYValue;
+ //chart.ChartAreas[0].AxisY.Minimum = System.Math.Floor(dataCenterY - (dataSpanY / 2)); // dataMinYValue;
+ // https://jira.maxim-ic.com/browse/OS24EVK-42 Autoscale tuning (Larry 2014-11-24) Round to nearest multiple of 100.
+ // - Y axis: No decimals. Round to nearest multiple of 100.
+ // private double _AutoScaleYmultiples = 100;
+ int iMaxY_target = (int)((dataCenterY + (dataSpanY / 2)) / _AutoScaleYmultiples);
+ int iMinY_target = (int)((dataCenterY - (dataSpanY / 2)) / _AutoScaleYmultiples);
+
+ double dampingConstantK = 0.2;
+ int iMaxY_damped = iMaxY_target;
+ int iMinY_damped = iMinY_target;
+ if (double.IsNaN(_chart.ChartAreas[chartAreaName].AxisY.Maximum) == false)
+ {
+ int iMaxY_chart = (int)(_chart.ChartAreas[chartAreaName].AxisY.Maximum / _AutoScaleYmultiples);
+ int iMinY_chart = (int)(_chart.ChartAreas[chartAreaName].AxisY.Minimum / _AutoScaleYmultiples);
+ iMaxY_damped = (int)((dampingConstantK * (double)iMaxY_target) + ((1 - dampingConstantK) * (double)iMaxY_chart) + 0.5);
+ iMinY_damped = (int)((dampingConstantK * (double)iMinY_target) + ((1 - dampingConstantK) * (double)iMinY_chart));
+ }
+ double maxY = iMaxY_target * _AutoScaleYmultiples;
+ double minY = iMinY_target * _AutoScaleYmultiples;
+ _chart.ChartAreas[chartAreaName].AxisY.Maximum = maxY;
+ _chart.ChartAreas[chartAreaName].AxisY.Minimum = minY;
+ // if chart.ChartAreas[chartAreaName].AxisY.Maximum is NaN then just assign maxY
+ //if (double.IsNaN(chart.ChartAreas[chartAreaName].AxisY.Maximum))
+ //{
+ // chart.ChartAreas[chartAreaName].AxisY.Maximum = maxY;
+ // chart.ChartAreas[chartAreaName].AxisY.Minimum = minY;
+ //}
+ //else
+ //{
+ // chart.ChartAreas[chartAreaName].AxisY.Maximum = (dampingConstantK * maxY) + ((1 - dampingConstantK) * chart.ChartAreas[chartAreaName].AxisY.Maximum);
+ // chart.ChartAreas[chartAreaName].AxisY.Minimum = (dampingConstantK * minY) + ((1 - dampingConstantK) * chart.ChartAreas[chartAreaName].AxisY.Minimum);
+ //}
+
+#if PROFILER
+ // TODO1: OS24EVK-54 profiling: capture max interval, number of intervals, cumulative interval
+ _profilingStopwatchAutoScaleEvaluate.Stop();
+#endif // PROFILER
+ }
+
+ /// <summary>
+ /// Raw data format
+ /// </summary>
+ public DataFormats DataFormat = DataFormats.FormatUnsigned;
+
+ public enum DataFormats
+ {
+ /// <summary>
+ /// Interpret raw data as unsigned values
+ /// </summary>
+ FormatUnsigned,
+
+ /// <summary>
+ /// Interpret raw data as 16-bit, signed 2's complement values
+ /// </summary>
+ Format16bit2sComplement,
+ }
+
+ } // public class MedicalChartHelper
+
+} // namespace Maxim.MAX30101