|
| 1 | +--- |
| 2 | +title: Scatter |
| 3 | +page_title: Chart for Blazor | Scatter |
| 4 | +description: Overview of the Scatter Chart for Blazor |
| 5 | +slug: components/chart/types/scatter |
| 6 | +tags: telerik,blazor,chart,scatter |
| 7 | +published: True |
| 8 | +position: 0 |
| 9 | +--- |
| 10 | + |
| 11 | +# Scatter Chart |
| 12 | + |
| 13 | +A **Scatter** chart shows data as points defined by their items' values. Its x-axis is also numerical and does not require categorical items, but numerical values. |
| 14 | + |
| 15 | +Scatter charts are useful for showing the relation between different sets of data, for example scientific (experimental) results. |
| 16 | + |
| 17 | +>caption Scatter chart. Results from the first code snippet below |
| 18 | +
|
| 19 | + |
| 20 | + |
| 21 | +@[template](/_contentTemplates/chart/link-to-basics.md#understand-basics-and-databinding-first) |
| 22 | + |
| 23 | +To create a scatter chart: |
| 24 | + |
| 25 | +1. add a `ChartSeries` to the `ChartSeriesItems` collection |
| 26 | +2. set its `Type` property to `ChartSeriesType.Scatter` |
| 27 | +3. provide a data collection to its `Data` property, which contains numerical data for the X and Y axes |
| 28 | + |
| 29 | + |
| 30 | +>caption A bubble chart that shows projected population change on a plot of life expectancy versus fertility rate |
| 31 | +
|
| 32 | +````CSHTML |
| 33 | +@* Scatter Series *@ |
| 34 | +
|
| 35 | +<TelerikChart> |
| 36 | + <ChartTitle Text="Unrecoverable Errors Per Minute vs. Signal Level"></ChartTitle> |
| 37 | +
|
| 38 | + <ChartSeriesItems> |
| 39 | + <ChartSeries Type="ChartSeriesType.Scatter" |
| 40 | + Data="@Series1Data" |
| 41 | + Name="APSK modulation" |
| 42 | + XField="@nameof(ModelData.Strength)" |
| 43 | + YField="@nameof(ModelData.Errors)"> |
| 44 | + </ChartSeries> |
| 45 | +
|
| 46 | + <ChartSeries Type="ChartSeriesType.Scatter" |
| 47 | + Data="@Series2Data" |
| 48 | + Name="QAM modulation" |
| 49 | + XField="@nameof(ModelData.Strength)" |
| 50 | + YField="@nameof(ModelData.Errors)"> |
| 51 | + </ChartSeries> |
| 52 | + </ChartSeriesItems> |
| 53 | +
|
| 54 | + <ChartXAxes> |
| 55 | + <ChartXAxis Max="-30" AxisCrossingValue="@(new object[] { -100 })"> |
| 56 | + <ChartXAxisTitle Text="Signal Strength, dBm"></ChartXAxisTitle> |
| 57 | + </ChartXAxis> |
| 58 | + </ChartXAxes> |
| 59 | +
|
| 60 | + <ChartYAxes> |
| 61 | + <ChartYAxis> |
| 62 | + <ChartYAxisTitle Text="Error count"></ChartYAxisTitle> |
| 63 | + </ChartYAxis> |
| 64 | + </ChartYAxes> |
| 65 | +</TelerikChart> |
| 66 | +
|
| 67 | +@code { |
| 68 | + public class ModelData |
| 69 | + { |
| 70 | + public double Strength { get; set; } |
| 71 | + public double Errors { get; set; } |
| 72 | + } |
| 73 | +
|
| 74 | + public List<ModelData> Series1Data = new List<ModelData>() |
| 75 | + { |
| 76 | + new ModelData { Strength = -82, Errors = 15 }, |
| 77 | + new ModelData { Strength = -79, Errors = 13 }, |
| 78 | + new ModelData { Strength = -77, Errors = 10 }, |
| 79 | + new ModelData { Strength = -74, Errors = 7 }, |
| 80 | + new ModelData { Strength = -70, Errors = 3 }, |
| 81 | + new ModelData { Strength = -65, Errors = 1 } |
| 82 | + }; |
| 83 | +
|
| 84 | + public List<ModelData> Series2Data = new List<ModelData>() |
| 85 | + { |
| 86 | + new ModelData { Strength = -80, Errors = 25 }, |
| 87 | + new ModelData { Strength = -76, Errors = 22 }, |
| 88 | + new ModelData { Strength = -73, Errors = 17 }, |
| 89 | + new ModelData { Strength = -70, Errors = 15 }, |
| 90 | + new ModelData { Strength = -65, Errors = 12 }, |
| 91 | + new ModelData { Strength = -61, Errors = 10 }, |
| 92 | + new ModelData { Strength = -55, Errors = 7 }, |
| 93 | + new ModelData { Strength = -50, Errors = 3 } |
| 94 | + }; |
| 95 | +} |
| 96 | +```` |
| 97 | + |
| 98 | + |
| 99 | +## Scatter Chart Specific Appearance Settings |
| 100 | + |
| 101 | +### Color |
| 102 | + |
| 103 | +The color of a series is controlled through the `Color` property that can take any valid CSS color (for example, `#abcdef`, `#f00`, or `blue`). |
| 104 | + |
| 105 | +The `ColorField` can change the color of individual items. To use it, pass a valid CSS color to the corresponding field in the model and the chart will use its values instead of the `Color` parameter. |
| 106 | + |
| 107 | + |
| 108 | +## See Also |
| 109 | + |
| 110 | + * [Live Demo: Area Chart](https://demos.telerik.com/blazor-ui/chart/area-chart) |
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