Display dimension features from a mobile map package.
Use case
Dimensions show specific lengths or distances on a map. A dimension may indicate the length of a side of a building or land parcel, or the distance between two features, such as a fire hydrant and the corner of a building.
How to use the sample
When the sample loads, it will automatically display the map containing dimension features from the mobile map package. The name of the dimension layer containing the dimension features is displayed in the controls box. Control the visibility of the dimension layer with the "Dimension Layer visibility" check box, and apply a definition expression to show dimensions of greater than or equal to 450m in length using the "Definition Expression" checkbox.
How it works
- Load a
MobileMapPackagethat containsDimensionLayer - After it successfully loads, get the map from the mmpk and add it to the map view:
mobileMapPackage.Maps.First(). - Get the
DimensionLayerfrom the map view and set the name of the layer to the UI withdimensionLayer.Name. - Control the dimension layer's visibility with
dimensionLayer.IsVisibleand set a definition expression withdimensionLayer.DefinitionExpression.
Relevant API
- DimensionLayer
- MobileMapPackage
About the data
This sample shows a subset of the Edinburgh, Scotland network of pylons, substations, and powerlines within an Edinburgh Pylon Dimensions mobile map package, digitized from satellite imagery. Note the data is intended as illustrative of the network only.
Additional information
Dimension layers can be taken offline from a feature service hosted on ArcGIS Enterprise 10.9 or later, using the GeodatabaseSyncTask. Dimension layers are also supported in mobile map packages or mobile geodatabases created in ArcGIS Pro 2.9 or later.
Tags
dimension, layer, mmpk, mobile map package, utility
Sample Code
<ContentPage x:Class="ArcGISRuntimeXamarin.Samples.DisplayDimensions.DisplayDimensions"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:esriUI="clr-namespace:Esri.ArcGISRuntime.Xamarin.Forms;assembly=Esri.ArcGISRuntime.Xamarin.Forms"
xmlns:resources="clr-namespace:Forms.Resources">
<RelativeLayout>
<esriUI:MapView x:Name="MyMapView" Style="{StaticResource MapWithFormStyle}" />
<resources:ResponsiveFormContainer x:Name="ResponsiveFormContainer">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="auto" />
<RowDefinition Height="auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Label x:Name="PylonLabel"
Grid.Row="0"
Grid.ColumnSpan="2" />
<Switch x:Name="DimensionLayerSwitch"
Grid.Row="1"
Grid.Column="0"
IsEnabled="False"
IsToggled="True"
Toggled="DimensionLayerSwitchChanged" />
<Label x:Name="DimensionLayerLabel"
Grid.Row="1"
Grid.Column="1"
Text="Dimension Layer visibility"
VerticalTextAlignment="Center" />
<Switch x:Name="DefinitionExpressionSwitch"
Grid.Row="2"
Grid.Column="0"
IsEnabled="False"
IsToggled="False"
Toggled="DefinitionExpressionSwitchChanged" />
<Label x:Name="DefinitionExpressionLabel"
Grid.Row="2"
Grid.Column="1"
Text="Definition Expression: Dimensions >= 450m"
VerticalTextAlignment="Center" />
</Grid>
</resources:ResponsiveFormContainer>
</RelativeLayout>
</ContentPage>