Pie Chart problems with Reports

[Ryan]

Hello,

 

I am trying to create a Pie chart in code, and it is not looking like a pie, i feel like an just missing a setting at the points, but all resources I have read/reviewed have not helped be finish it. Thank for any help!

01.ObjectDataSource src = new ObjectDataSource(curScope,"GetData");
02.
03.Telerik.Reporting.Graph test = new Graph()
04.{
05.    NoDataMessage = "Yes, we have no data",
06.    Location = new PointU(Unit.Inch(0), Unit.Inch(0)),
07.    Size = new SizeU(Unit.Inch(8.0D), Unit.Inch(3.0D)),
08.    StyleName = "Normal.TableGroup",
09.    DataSource = src,
10.    Name = "graph"+colIndex.ToString()
11.};
12.
13.test.Titles.Add(new GraphTitle() { Text = "% of" + ReportTitle });
14.
15.BarSeries pie = new BarSeries();
16.pie.Name = "pie" + colIndex.ToString();
17.var pallet = new ColorPalette();
18.pallet.AddColors(Color.Red, Color.Blue, Color.Green, Color.Yellow, Color.Orange);
19.pie.ColorPalette = pallet;
20.test.ColorPalette = pallet;
21.
22.GraphGroup category = new GraphGroup()
23.{
24.    Name = "cat1"
25.};
26.category.Groupings.Add("=Fields.IngredientName");
27.pie.CategoryGroup = category;
28.test.CategoryGroups.Add(category);
29.
30.GraphGroup series = new GraphGroup()
31.{
32.    Name = "series1"
33.};
34.series.Groupings.Add("=Fields.PercentOfTotal");
35.//series.Sortings.Add("=Sum(Fields.PercentOfTotal)", SortDirection.Desc);
36.//series.Sortings.Add("=Fields.IngredientName", SortDirection.Asc);
37.//series.Filters.Add("=Sum(Fields.PercentOfTotal)", FilterOperator.TopN, "20");
38.pie.SeriesGroup = series;
39.test.SeriesGroups.Add(series);
40.
41.PolarCoordinateSystem polar = new PolarCoordinateSystem();
42.
43.var radCat = new Telerik.Reporting.GraphAxis()
44.{
45.    Name = "radialAx1",
46.    Scale = new CategoryScale()
47.    {
48.        //SpacingSlotCount = 0,
49.        PositionMode = AxisPositionMode.OnTicks
50.    }
51.};
52.
53.var angNum = new Telerik.Reporting.GraphAxis()
54.{
55.    Name = "angularAx1",
56.    Scale = new NumericalScale()
57.    {
58.        //SpacingSlotCount = 1
59.    }
60.};
61.
62.polar.Name = "polarScale";
63.polar.RadialAxis = radCat;
64.polar.RadialAxis.Style.Visible = false;
65.
66.polar.AngularAxis = angNum;
67.polar.AngularAxis.Style.Visible = false;
68.
69.test.CoordinateSystems.Add(polar);
70.pie.CoordinateSystem = polar;
71.
72.pie.X = "=IsNull(Sum(Fields.PercentOfTotal), 0)";
73.pie.LegendItem.Value = "=Fields.IngredientName";
74.pie.ArrangeMode = GraphSeriesArrangeMode.Stacked100;
75.//pie.DataPointLabel = "Sum(Fields.PercentOfTotal)/1000";
76.//pie.DataPointLabelFormat = "{0:C0}K";

[Stef]

Hello Ryan,

There is no need to wrap instantiated data objects in data source components - Do I need to use a Data Source component? Also the recommended approach is to design a sample report with test data through the VS Report Designer. Then you can get the auto-generated code and adjust it for usage at run-time.

For example start with How to: Create Pie Chart. Note that the Series.Groups grouping generates the different pies in the case - Graph Structure.
Once you have the auto-generated code and modify it, you can test the created report definition by serializing the report instance in a TRDX file and opening it with the Standalone Report Designer.


I hope this helps.

Regards,
Stef
Telerik by Progress