percentage mark on the Y- axis

[mikethelad]

How do I add a percentage mark on the Y- axis

[Sandra]

Hello mikethelad,

To achieve the percentage in the Y-axis, you only need change the style of the axes to get the style of Marks. You can do something as next lines of code:

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   Series1.Marks.Style = Steema.TeeChart.Styles.MarksStyles.Percent;
           tChart1.Axes.Left.Labels.Style = AxisLabelStyle.Mark;

I hope will helps.

Thanks,

[mikethelad]

I only getting one % value if I do this, see example

[Sandra]

Hello mikethelad,

In this case, the option is use GetAxisDrawLabel event of left axis as I do in next simple code where I have modified the text label adding a percentage:

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

        private void InitializeChart()
        {
            double MaxX, MinX;
            tChart1.Aspect.View3D = false;
            tChart1.Dock = DockStyle.Fill;
            tChart1.Legend.Alignment = LegendAlignments.Bottom;

            for (int i = 0; i < 2; i++)
            {
                new Steema.TeeChart.Styles.Line(tChart1.Chart);
                tChart1[i].FillSampleValues(2);
                tChart1[i].Marks.Visible = true;
                tChart1[i].Marks.Style = Steema.TeeChart.Styles.MarksStyles.Percent;
            }
            tChart1.Axes.Left.GetAxisDrawLabel += new GetAxisDrawLabelEventHandler(Left_GetAxisDrawLabel);
            tChart1.Axes.Bottom.MaximumOffset = 2;
            tChart1.Axes.Bottom.MinimumOffset = 1;
            tChart1.Axes.Left.MaximumOffset = 2;
            tChart1.Axes.Left.MinimumOffset = 1;
        }

        void Left_GetAxisDrawLabel(object sender, GetAxisDrawLabelEventArgs e)
        {
            e.Text = e.Text + "%";
        }

Can you tell if previous code works as you want?

Thanks,

[mikethelad]

Nearly, the 100% is being choppied to 00%, I have tried increasing the offset to 15


WebChart1.Chart.Axes.Left.MinimumOffset = 15;
WebChart1.Chart.Axes.Left.MaximumOffset = 15;

[Sandra]

Hello mikethelad,

I can try to reproduce your problem but it not occurs for me using last version of TeeChartFor.Net and next code:

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    Steema.TeeChart.Chart tChart1;

    protected void Page_Load(object sender, EventArgs e)
    {
        tChart1 = WebChart3.Chart;
        InitializeChart();

    }
        private void InitializeChart()
        {
            tChart1.Aspect.View3D = false;
 
            tChart1.Legend.Alignment = LegendAlignments.Bottom;

            for (int i = 0; i < 2; i++)
            {
                new Steema.TeeChart.Styles.Line(tChart1.Chart);
                tChart1[i].Marks.Visible = true;
                AddValues(tChart1[i], 2);
                tChart1[i].Marks.Style = Steema.TeeChart.Styles.MarksStyles.Percent;
            }

            tChart1.Axes.Left.GetAxisDrawLabel += new GetAxisDrawLabelEventHandler(Left_GetAxisDrawLabel);
            tChart1.Axes.Bottom.MaximumOffset = 2;
            tChart1.Axes.Bottom.MinimumOffset = 1;
            tChart1.Axes.Left.MaximumOffset = 15;
            tChart1.Axes.Left.MinimumOffset = 15;
            tChart1.Axes.Left.SetMinMax(0, 100);
        }
        private void AddValues(Steema.TeeChart.Styles.Series s, int value)
        {
            Random rnd = new Random();
            for (int i = 0; i < value; i++)
            {
                s.Add(i, rnd.Next(100));
            }
        }
        void Left_GetAxisDrawLabel(object sender, GetAxisDrawLabelEventArgs e)
        {
            e.Text = e.Text + "%";
        }

Please see previous code and check if your problem occurs using it. If occurs, please can you tell us which version of TeeChart are you using?

On the other hand, seeing your image seems the 100% doesn't appear, because the margin is slimmer than default margin of WebChart. If is the case, I recommend you change the size of your margin left as I do in next line of code, because the labels can draw correctly:

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  tChart1.Panel.MarginLeft = 10;

Thanks,