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#144 zed graph plotting......

open
nobody
5
2012-09-19
2012-07-09
Anonymous
No

Dear sir , i am using the zedgraph to plot a graph between load and time , I want to remove the the line which is running from origin to the current point ,
Please sir , suggest me how to proceed , i want to plot the real time load vs time , but no connecting line.

Please find the attached file....for reference

Discussion


  • Anonymous
    2012-07-09

    The code reads data from serial port "COM7" ,
    1st byte = '$'
    2nd byte =MSB from load cell data.
    3rd byte = LSB from load cell data.

    merges the data in temp1
    plots the temp1 vs every reading as i .

    Here is the code :

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;

    using System.IO.Ports;
    using ZedGraph;

    namespace zedgraph3
    {
    public partial class Form1 : Form
    {
    // Open the port for communications
    byte[] serdata = new byte[10];

    double[] x = new double[10000];
    double[] y = new double[10000];
    //double[] z = new double[10000];

    //double[] temp = new double[200];
    int i=0 , l=0,m=0,n=0;
    int temp1 = 0;
    byte data_act = 0,data0=0,data1=0,data2=0;

    byte match_flag = 0,attempt = 0;

    //SerialPort port = new SerialPort("COM7", 9600, Parity.None, 8, StopBits.One);

    int hours, mins, seconds=0;

    public Form1()
    {
    InitializeComponent();

    foreach (string s in SerialPort.GetPortNames())
    MessageBox.Show(s.ToString());
    }

    System.IO.Ports.SerialPort port;
    static public double voltage;
    static public string portname;
    static public Parity parity;
    static public int BaudRate;
    static public StopBits stopbits;
    public int databits;

    private void Form1_Load(object sender, EventArgs e)
    {
    portname = "COM7";
    parity = Parity.None;
    BaudRate = 9600;
    stopbits = StopBits.Two;
    databits = 8;

    port = new System.IO.Ports.SerialPort(portname);
    port.Parity = parity;
    port.BaudRate = BaudRate;
    port.StopBits = stopbits;
    port.DataBits = databits;
    port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);
    port.Open();
    }

    void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
    // read one byte data into bt

    port.Read(serdata , 0 ,1);

    data_act = serdata[0];

    i++;
    if (i > 9999)
    { i = 0; }

    if ((data_act == '$') && (match_flag == 0))
    { match_flag = 1;}

    if ((match_flag == 1) && (data_act != '$'))
    { data1 = data_act; m = data1; match_flag = 2; }

    if ((match_flag == 2) && (data_act != '$'))
    {
    if (attempt == 1)
    {
    data2 = data_act; n = data2;
    temp1 = data1;
    temp1 = temp1 << 8;
    temp1 = temp1 | data2;
    match_flag = 0; attempt = 0;
    }
    else
    { attempt = 1; }

    }

    //label4.Text = temp1.ToString() + " counts";

    x[i] = Convert.ToDouble(i);
    y[i] = Convert.ToDouble(temp1);
    // y[i] = Convert.ToDouble(serdata[0]);

    zedGraphControl1.GraphPane.CurveList.Clear();

    // GraphPane object holds one or more Curve objects (or plots)
    GraphPane myPane = zedGraphControl1.GraphPane;

    myPane.Title.Text = "Load cell data plotting";
    myPane.XAxis.Title.Text = "Time(ms)";
    myPane.YAxis.Title.Text = "Weight(gms)";
    // myPane.YAxis.Scale.MagAuto = false;

    // PointPairList holds the data for plotting, X and Y arrays
    PointPairList spl1 = new PointPairList(x, y);

    // RollingPointPairList aaa = new RollingPointPairList(i);

    // Add curves to myPane object
    LineItem myCurve = myPane.AddCurve("ADC", spl1, Color.Red, SymbolType.None);

    //myCurve.Line.IsVisible = false;
    myCurve.Line.Width = 1.0F;

    // LineItem myCurve = myPane.AddCurve("ADC", aaa, Color.Blue, SymbolType.None);
    // BarItem mybar = myPane.AddBar("plotting", x , y, Color.Red);

    // I add all three functions just to be sure it refeshes the plot.
    zedGraphControl1.AxisChange();
    //zedGraphControl1.Refresh();
    zedGraphControl1.Invalidate();
    }

    Please suggest how to remove that line .......