[英]How to update plot using Oxyplot in Windows Form
我正在做一個項目,我從板上讀取一些串行數據,並嘗試在圖表上顯示它。 到目前為止,我已經設法在我的應用程序中實現了 Oxyplot。
但是我很困惑如何更新來自串行端口的每個新數據的圖?
這是我的簡化版本代碼
using OxyPlot;
namespace Motor
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
ComPort.DataReceived += new
System.IO.Ports.SerialDataReceivedEventHandler(port_DataReceived_1);
plot1.Model = GridLinesHorizontal();
}
public static PlotModel GridLinesHorizontal()
{
var plotModel = new PlotModel();
plotModel.Title = "Horizontal";
var linearAxis1 = new LinearAxis();
linearAxis1.MajorGridlineStyle = LineStyle.Solid;
linearAxis1.MinorGridlineStyle = LineStyle.Dot;
linearAxis1.Maximum = 5;
linearAxis1.Minimum = -5;
plotModel.Axes.Add(linearAxis1);
return plotModel;
}
private void port_DataReceived_1(object sender, SerialDataReceivedEventArgs e)
{
InputData = ComPort.ReadLine();
if (InputData != String.Empty)
{
this.BeginInvoke(new SetTextCallback(SetText), new object[] { InputData });
}
}
private void SetText(string text)
{
dVal = double.Parse(text, CultureInfo.InvariantCulture); // convert to double
///// HERE I WANT TO UPDATE THE PLOT with dval
}
}
}
不確定這是否是最好的方法,但這樣的事情應該可行:
using OxyPlot;
using OxyPlot.Axes;
using OxyPlot.Series;
namespace Motor
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
ComPort.DataReceived += new
System.IO.Ports.SerialDataReceivedEventHandler(port_DataReceived_1);
plot1.Model = GridLinesHorizontal();
//create new LineSeries and add it to the PlotView
Line1 = new LineSeries
{
Title = "Test Series",
Color = OxyColors.Red,
TextColor = OxyColors.Red,
BrokenLineColor = OxyColors.Red
};
plot1.Model.Series.Add(Line1);
}
LineSeries Line1; // declare Line1 as global
public static PlotModel GridLinesHorizontal()
{
var plotModel = new PlotModel();
plotModel.Title = "Horizontal";
var linearAxis1 = new LinearAxis();
linearAxis1.MajorGridlineStyle = LineStyle.Solid;
linearAxis1.MinorGridlineStyle = LineStyle.Dot;
linearAxis1.Maximum = 5;
linearAxis1.Minimum = -5;
plotModel.Axes.Add(linearAxis1);
return plotModel;
}
private void port_DataReceived_1(object sender, SerialDataReceivedEventArgs e)
{
InputData = ComPort.ReadLine();
if (InputData != String.Empty)
{
this.BeginInvoke(new SetTextCallback(SetText), new object[] { InputData });
}
}
int plotIndex = 0;
private void SetText(string text)
{
dVal = double.Parse(text, CultureInfo.InvariantCulture); // convert to double
///// plotIndex is the x value of the new point, not sure if OxyPlot offers an auto increment option
Line1.Points.Add(new DataPoint(plotIndex, dVal));
plotIndex++;
plot1.Invalidate();
}
}
}
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