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Multi-Lines with SeriesMappings?

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Enill
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Enill asked on 21 May 2010, 08:31 PM
Hi,
is it possible to have multiple lines in a same chart using different seriesmapping object?

To be more clear, i have 2 "List<StructXY>" where "StructXY" is a structure with two field(double x, double y).

i have a "List<List<StructXY>>" collection and i want to bind 2 different seriesmapping(to draw two independant lines) in my chart based on the x and y value of eah collection.

Thanks in advance if you can give me a simple working C# example.

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Enill
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answered on 21 May 2010, 11:41 PM
Here is my test project(The reference to collectionindex = 1 just doesnt work at all):

namespace seriesmapping_test 
    public partial class MainPage : UserControl 
    { 
        public struct structXY 
        { 
            public double valueX { getset; } 
            public double valueY { getset; } 
        } 
         
        public MainPage() 
        { 
            InitializeComponent(); 
 
            RadChart rc = new RadChart(); 
            List<List<structXY>> lstMain = new List<List<structXY>>(); 
            List<structXY> lst1 = new List<structXY>(); 
            List<structXY> lst2 = new List<structXY>(); 
 
            SeriesMapping sm1 = new SeriesMapping() 
            { 
                SeriesDefinition = new LineSeriesDefinition() 
                { 
                    ShowItemLabels = false 
                } 
            }; 
            sm1.CollectionIndex = 1; 
            sm1.ItemMappings.Add(new ItemMapping("valueX", DataPointMember.XValue)); 
            sm1.ItemMappings.Add(new ItemMapping("valueY", DataPointMember.YValue)); 
 
            SeriesMapping sm2 = new SeriesMapping() 
            { 
                SeriesDefinition = new BarSeriesDefinition 
                { 
                    ShowItemLabels = false 
                } 
            }; 
            sm2.CollectionIndex = 1; 
            sm2.ItemMappings.Add(new ItemMapping("valueX", DataPointMember.XValue)); 
            sm2.ItemMappings.Add(new ItemMapping("valueY", DataPointMember.YValue)); 
 
            rc.SeriesMappings.Add(sm1); 
            rc.SeriesMappings.Add(sm2); 
 
            for (int i = 0; i < 100; i++)  
            { 
                lst1.Add(new structXY() { valueX = i, valueY = i }); 
                lst2.Add(new structXY() { valueX = i, valueY = i ^ i }); 
            } 
 
            lstMain.Add(lst1); 
            lstMain.Add(lst2); 
 
            rc.PaletteBrushes.Add(new SolidColorBrush(Colors.Red)); 
            rc.PaletteBrushes.Add(new SolidColorBrush(Colors.Green)); 
            rc.ItemsSource = lstMain; 
 
            LayoutRoot.Children.Add(rc); 
        } 
    } 

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Ves
Telerik team
answered on 26 May 2010, 01:42 PM
Hi Enill,

I reviewed your code and I found two possible issues:
  1. CollectionIndex is set to 1 for both series definitions
  2. valueY = i ^ i -- this always sets valueY with 0, try changing it to i*i or i*5

Greetings,
Ves
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Enill
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answered on 26 May 2010, 01:45 PM
Hi,
actually i noticed that i didnt posted the good code block, i apologies.

The correct code block did'nt had the i ^ i , it was for a test purpose.

Also, as you pointed, both collection were pointing to CollectionIndex = 1, it was my mistake, lack of awareness.

Thanks you!
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Ves
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