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Layout in Blazor TreeMap component

22 Jul 2021 / 4 minutes to read

Determine the visual representation of nodes belonging to all the TreeMap levels using the LayoutType property.

Types of layout

The available layout types are,

Squarified

The Squarified layout displays the nested rectangles based on aspect ratio in the TreeMap. The rectangles will be split based on the height and width of the parent. The default rendering type of layout is Squarified.

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@using Syncfusion.Blazor.TreeMap

<SfTreeMap DataSource="GrowthReports" TValue="GDPReport" WeightValuePath="GDP">
</SfTreeMap>

@code {
public class GDPReport
{
    public string CountryName { get; set; }
    public double GDP { get; set; }
    public double Percentage { get; set; }
    public int Rank { get; set; }
};
public List<GDPReport> GrowthReports = new List<GDPReport> {
        new GDPReport {CountryName="United States", GDP=17946, Percentage=11.08, Rank=1},
        new GDPReport {CountryName="China", GDP=10866, Percentage= 28.42, Rank=2},
        new GDPReport {CountryName="Japan", GDP=4123, Percentage=-30.78, Rank=3},
        new GDPReport {CountryName="Germany", GDP=3355, Percentage=-5.19, Rank=4},
        new GDPReport {CountryName="United Kingdom", GDP=2848, Percentage=8.28, Rank=5},
        new GDPReport {CountryName="France", GDP=2421, Percentage=-9.69, Rank=6},
        new GDPReport {CountryName="India", GDP=2073, Percentage=13.65, Rank=7},
        new GDPReport {CountryName="Italy", GDP=1814, Percentage=-12.45, Rank=8},
        new GDPReport {CountryName="Brazil", GDP=1774, Percentage=-27.88, Rank=9},
        new GDPReport {CountryName="Canada", GDP=1550, Percentage=-15.02, Rank=10}
};
}

TreeMap with squarified layout

Slice and dice vertical

The SliceAndDiceVertical layout creates rectangles with high aspect ratio and displays items in a vertically sorted order.

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<SfTreeMap DataSource="GrowthReports" TValue="GDPReport" WeightValuePath="GDP" LayoutType="LayoutMode.SliceAndDiceVertical">
</SfTreeMap>

Refer to the code block to know about the property value of GrowthReports.

TreeMap with slice and dice vertical layout

Slice and dice horizontal

The SliceAndDiceHorizontal layout creates rectangles with high aspect ratio and displays items in a horizontally sorted order.

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<SfTreeMap DataSource="GrowthReports" TValue="GDPReport" WeightValuePath="GDP" LayoutType="LayoutMode.SliceAndDiceHorizontal">
</SfTreeMap>

Refer to the code block to know about the property value of GrowthReports.

TreeMap with slice and dice horizontal

Slice and dice auto

The SliceAndDiceAuto layout creates rectangles with high aspect ratio and display items sorted both horizontally and vertically.

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<SfTreeMap DataSource="GrowthReports" TValue="GDPReport" WeightValuePath="GDP" LayoutType="LayoutMode.SliceAndDiceAuto">
</SfTreeMap>

Refer to the code block to know about the property value of GrowthReports.

TreeMap with slice and dice auto layout

Rendering direction

The direction of TreeMap item is TopLeftBottomRight by default and customize the rendering direction of the TreeMap item by setting the RenderDirection property.

The TreeMap can be rendered in the following directions:

The following example shows, how to render the TreeMap in the RTL direction with TopLeftBottomRight.

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using Syncfusion.Blazor.TreeMap;

<SfTreeMap DataSource="Fruits" TValue="Fruit" WeightValuePath="Count" Palette='new string[]{"#71B081","#5A9A77", "#498770", "#39776C", "#266665","#124F5E"}' RenderDirection="RenderingMode.TopLeftBottomRight">
<TreeMapLeafItemSettings LabelPath="Name">
</TreeMapLeafItemSettings>
<TreeMapTooltipSettings Visible=true Format="${Count} : ${Name}">
</TreeMapTooltipSettings>
</SfTreeMap>

@code{
public class Fruit
{
    public string Name { get; set; }
    public int Count { get; set; }
};
public List<Fruit> Fruits = new List<Fruit> {
    new Fruit { Name="Apple", Count=5000 },
    new Fruit { Name="Mango", Count=3000 },
    new Fruit { Name="Orange", Count=2300 },
    new Fruit { Name="Banana", Count=500 },
    new Fruit { Name="Grape", Count=4300 },
    new Fruit { Name="Papaya", Count=1200 },
    new Fruit { Name="Melon", Count=4500 }
};
}

TreeMap with custom rendering direction

The following example shows, how to render the TreeMap in the RTL direction with TopRightBottomLeft.

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<SfTreeMap DataSource="Fruits" TValue="Fruit" WeightValuePath="Count" Palette='new string[]{"#71B081","#5A9A77", "#498770", "#39776C", "#266665","#124F5E"}' RenderDirection="RenderingMode.TopRightBottomLeft">
<TreeMapLeafItemSettings LabelPath="Name">
</TreeMapLeafItemSettings>
<TreeMapTooltipSettings Visible=true Format="${Count} : ${Name}">
</TreeMapTooltipSettings>
</SfTreeMap>

Refer to the code block to know about the property value of Fruits.

TreeMap custom rendering direction

The following example shows, how to render the TreeMap in the RTL direction with BottomRightTopLeft.

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<SfTreeMap DataSource="Fruits" TValue="Fruit" WeightValuePath="Count" Palette='new string[]{"#71B081","#5A9A77", "#498770", "#39776C", "#266665","#124F5E"}' RenderDirection="RenderingMode.BottomRightTopLeft">
<TreeMapLeafItemSettings LabelPath="Name">
</TreeMapLeafItemSettings>
<TreeMapTooltipSettings Visible=true Format="${Count} : ${Name}">
</TreeMapTooltipSettings>
</SfTreeMap>

Refer to the code block to know about the property value of Fruits.

TreeMap custom rendering direction

The following example shows, how to render the TreeMap in the RTL direction with BottomLeftTopRight.

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<SfTreeMap DataSource="Fruits" TValue="Fruit" WeightValuePath="Count" Palette='new string[]{"#71B081","#5A9A77", "#498770", "#39776C", "#266665","#124F5E"}' RenderDirection="RenderingMode.BottomLeftTopRight">
<TreeMapLeafItemSettings LabelPath="Name">
</TreeMapLeafItemSettings>
<TreeMapTooltipSettings Visible=true Format="${Count} : ${Name}">
</TreeMapTooltipSettings>
</SfTreeMap>

Refer to the code block to know about the property value of Fruits.

TreeMap custom rendering direction