コード例 #1
0
        private void GroupValues_Click(object sender, System.EventArgs e)
        {
            if (m_bGroupedData)
            {
                MessageBox.Show("Click the ungroup button first");
                return;
            }

            // get a subset containing the pies which are smaller than the specified value
            NDataSeriesSubset smallerThanValue = m_Pie.Values.Filter(Nevron.Chart.CompareMethod.Less, m_dGroupValue);

            // determine the sum of the filtered pies
            double dOtherSliceValue = m_Pie.Values.Evaluate("SUM", smallerThanValue);

            // remove the data points contained in the
            for (int i = m_Pie.GetDataPointCount(); i >= 0; i--)
            {
                if (smallerThanValue.Contains(i))
                {
                    m_Pie.RemoveDataPointAt(i);
                }
            }

            // add a detached pie with the specified group label and color
            NDataPoint dp = new NDataPoint(dOtherSliceValue, m_sGroupLabel);

            dp[DataPointValue.PieDetachment] = 2;
            dp[DataPointValue.FillStyle]     = new NColorFillStyle(m_GroupColor);
            dp[DataPointValue.StrokeStyle]   = new NStrokeStyle(1, m_GroupColor);
            m_Pie.AddDataPoint(dp);

            m_bGroupedData = true;
            nChartControl1.Refresh();
        }
コード例 #2
0
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                WebExamplesUtilities.FillComboWithColorNames(GroupedPieColorDropDownList);
                GroupedPieColorDropDownList.SelectedIndex = 20;

                // init form controls
                ThresholdValueTextBox.Text  = "34";
                GroupedPieLabelTextBox.Text = "Other";
            }

            nChartControl1.BackgroundStyle.FrameStyle.Visible = false;
            nChartControl1.Settings.JitterMode = JitterMode.Enabled;

            // set a chart title
            NLabel title = nChartControl1.Labels.AddHeader("Grouped Pie Chart");

            title.TextStyle.FontStyle        = new NFontStyle("Times New Roman", 14, FontStyle.Italic);
            title.TextStyle.ShadowStyle.Type = ShadowType.LinearBlur;
            title.ContentAlignment           = ContentAlignment.BottomRight;
            title.Location = new NPointL(
                new NLength(2, NRelativeUnit.ParentPercentage),
                new NLength(2, NRelativeUnit.ParentPercentage));

            // setup legend
            NLegend legend = nChartControl1.Legends[0];

            legend.OuterBottomBorderStyle.Width = new NLength(0, NGraphicsUnit.Pixel);
            legend.OuterLeftBorderStyle.Width   = new NLength(0, NGraphicsUnit.Pixel);
            legend.OuterRightBorderStyle.Width  = new NLength(0, NGraphicsUnit.Pixel);
            legend.OuterTopBorderStyle.Width    = new NLength(0, NGraphicsUnit.Pixel);
            legend.FillStyle.SetTransparencyPercent(70);
            legend.HorizontalBorderStyle.Width = new NLength(0, NGraphicsUnit.Pixel);
            legend.VerticalBorderStyle.Width   = new NLength(0, NGraphicsUnit.Pixel);

            // by default the control contains a Cartesian chart -> remove it and create a Pie chart
            NChart chart = new NPieChart();

            nChartControl1.Charts.Clear();
            nChartControl1.Charts.Add(chart);

            chart.Enable3D        = true;
            chart.DisplayOnLegend = nChartControl1.Legends[0];
            chart.Projection.SetPredefinedProjection(PredefinedProjection.PerspectiveElevated);
            chart.BoundsMode = BoundsMode.Fit;
            chart.Location   = new NPointL(
                new NLength(20, NRelativeUnit.ParentPercentage),
                new NLength(20, NRelativeUnit.ParentPercentage));
            chart.Size = new NSizeL(
                new NLength(60, NRelativeUnit.ParentPercentage),
                new NLength(60, NRelativeUnit.ParentPercentage));

            // setup pie series
            NPieSeries pie = (NPieSeries)chart.Series.Add(SeriesType.Pie);

            pie.Legend.Mode = SeriesLegendMode.None;
            pie.PieStyle    = PieStyle.SmoothEdgePie;

            int count = 10;

            pie.Values.FillRandomRange(Random, count, 1, 100);

            for (int i = 0; i < count; i++)
            {
                pie.Detachments.Add(0);
                pie.Labels.Add(arrLabels[i]);
                pie.FillStyles[i] = arrCustomColors2[i % arrCustomColors2.Length];
            }

            if (GroupPiesCheckBox.Checked == true)
            {
                try
                {
                    Color  groupColor  = WebExamplesUtilities.ColorFromDropDownList(GroupedPieColorDropDownList);
                    double dGroupValue = Int32.Parse(ThresholdValueTextBox.Text);

                    // get a subset containing the pies which are smaller than the specified value
                    NDataSeriesSubset smallerThanValue = pie.Values.Filter(Nevron.Chart.CompareMethod.Less, dGroupValue);

                    // determine the sum of the filtered pies
                    double dOtherSliceValue = pie.Values.Evaluate("SUM", smallerThanValue);

                    // remove the data points contained in the
                    for (int i = pie.GetDataPointCount(); i >= 0; i--)
                    {
                        if (smallerThanValue.Contains(i))
                        {
                            pie.RemoveDataPointAt(i);
                        }
                    }

                    // add a detached pie with the specified group label and color
                    NDataPoint dp = new NDataPoint(dOtherSliceValue, GroupedPieLabelTextBox.Text);
                    dp[DataPointValue.PieDetachment] = 1.0;
                    dp[DataPointValue.FillStyle]     = new NColorFillStyle(groupColor);
                    dp[DataPointValue.StrokeStyle]   = new NStrokeStyle(1, groupColor);
                    pie.AddDataPoint(dp);
                }
                catch
                {
                }
            }
            else
            {
            }
        }