Axes and data series

[tenaris]

Hello everyone,

Questions: How can I?

1) Show in the axes bottom the each value of the data series.

2) Display the maximum and minimum value as a string in that axe?

Min valueX = 00:00:00
Max valueX = 07:59:59

Thanks you for your help.

[Sandra]

Hello tenaris,

1) Show in the axes bottom the each value of the data series.

I made a simple example, that I think you can use in your project. Please, check next code works as you want?

Code: Select all

 public Form1()
        {
            InitializeComponent();
            InitializeChart();
        }
        
        private Steema.TeeChart.Styles.Bar bar1;
        private void InitializeChart()
        {
            tChart1.Aspect.View3D = false;
            tChart1.Dock = DockStyle.Fill;
            bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
            bar1.Marks.Visible = false;
            Random rnd = new Random();
            DateTime today = DateTime.Today;
            TimeSpan oneDay = TimeSpan.FromDays(1);
            bar1.XValues.DateTime = true;
            for (int i = 1; i <= 20; ++i)
            {
                bar1.Add(today, rnd.Next(100), Color.Red);
                today += oneDay;
            }
            tChart1.Axes.Bottom.Labels.Items.Clear();
            for (int i = 0; i <bar1.Count ; i++)
            {
                tChart1.Axes.Bottom.Labels.Items.Add(bar1.XValues[i], DateTime.FromOADate(bar1.XValues[i]).ToShortDateString());               
            }

            tChart1.Axes.Bottom.Labels.Angle = 90;
            tChart1.Axes.Bottom.Increment = Steema.TeeChart.Utils.GetDateTimeStep(Steema.TeeChart.DateTimeSteps.OneDay);

        }

2) Display the maximum and minimum value as a string in that axe?
Min valueX = 00:00:00
Max valueX = 07:59:59

If you want display maximum and minimum value you could do a similar code as next, using GetNextAxisLabel event. Please, see next code and check if it works as you want.

Code: Select all

public Form1()
        {
            InitializeComponent();
            InitializeChart();
        }

        private Steema.TeeChart.Styles.Bar bar1;
        private bool first = true;
        double newValue;

        private void InitializeChart()
        {
            tChart1.Aspect.View3D = false;
            tChart1.Dock = DockStyle.Fill;

            bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
            bar1.Marks.Visible = false;
            bar1.XValues.DateTime = true;

            Random rnd = new Random();

            for (int i = 0; i < 20; ++i)
            {
                bar1.Add(DateTime.Now.AddDays(i), rnd.Next(100), Color.Red);
            }

            tChart1.Panel.MarginBottom = 20;
            tChart1.Axes.Bottom.Labels.Angle = 90;
            tChart1.Axes.Bottom.Labels.DateTimeFormat = "hh:mm:ss";
            tChart1.Axes.Bottom.Increment = Steema.TeeChart.Utils.GetDateTimeStep(Steema.TeeChart.DateTimeSteps.OneDay);
            tChart1.GetNextAxisLabel += new Steema.TeeChart.GetNextAxisLabelEventHandler(tChart1_GetNextAxisLabel);
        }

        void tChart1_GetNextAxisLabel(object sender, Steema.TeeChart.GetNextAxisLabelEventArgs e)
        {
            double seriesIncrement = tChart1.Axes.Bottom.Increment;

            if (sender.Equals(tChart1.Axes.Bottom))
            {
                e.Stop = false;

                if (first)
                {
                    newValue = e.LabelValue;
                    first = false;
                }
                else
                {
                    newValue += seriesIncrement;
                }

                if (e.LabelIndex == 0)
                {

                    e.LabelValue = tChart1.Axes.Bottom.CalcPosPoint(tChart1.Axes.Left.Position);
                    DateTime.FromOADate(e.LabelValue).ToLocalTime();

                }
                else
                {
                    if (e.LabelIndex == tChart1[0].Count)
                    {
                        e.LabelValue = tChart1.Axes.Bottom.CalcPosPoint(tChart1.Axes.Bottom.IEndPos);
                        DateTime.FromOADate(e.LabelValue).ToLocalTime();

                    }
                    else
                    {
                        if (e.LabelIndex < tChart1[0].Count)
                        {
                            e.LabelValue = newValue;
                            DateTime.FromOADate(e.LabelValue).ToLocalTime();

                        }
                        else
                        {
                            e.Stop = true;
                            first = true;
                        }
                    }
                }
            }
        }

Also, if you want more examples, I recommend that see this thread, where there are more complex examples.

I hope will helps.

Thanks,