無法提供樣式字典的檔案路徑

我正在一個 .net 專案中作業，我必須將特征轉換為圖形以使用存盤的符號顯示它們。

我有一個單獨的樣式檔案 .stylx 和地理資料庫檔案 .goedatabase.zip 我想用它來顯示樣式檔案的符號。

我成功執行了以下代碼并顯示可能映射。但是我無法訪問存盤在驅動器上的樣式庫和地理資料庫。

以下是我的檔案的規格

• mil2525d.stylx - 與 ArcGIS Runtime 100.0 - 100.4 一起使用的 stylx 檔案，用于構建包含 MIL-STD-2525D 符號字典的自定義應用程式。
• Militaryoverlay.geodatabase.zip - 這是一個從軍事覆寫模板創建的移動地理資料庫，用于 ArcGIS Runtime 示例

任何幫助

using System;
using System.Windows;
using ArcGISRuntime.Samples.Managers;
using Esri.ArcGISRuntime.Data;
using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.Symbology;

namespace ArcGISRuntime.WPF.Samples.FeatureLayerDictionaryRenderer
{
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        name: "Dictionary renderer with feature layer",
        category: "Layers",
        description: "Convert features into graphics to show them with mil2525d symbols.",
        instructions: "Pan and zoom around the map. Observe the displayed military symbology on the map.",
        tags: new[] { "military", "symbol" })]
    [ArcGISRuntime.Samples.Shared.Attributes.OfflineData("c78b149a1d52414682c86a5feeb13d30", "e0d41b4b409a49a5a7ba11939d8535dc")]
    public partial class FeatureLayerDictionaryRenderer
    {
        public FeatureLayerDictionaryRenderer()
        {
            InitializeComponent();

            // Setup the control references and execute initialization
            Initialize();
        }

        private async void Initialize()
        {
            // Create new Map with basemap
            Map myMap = new Map(BasemapStyle.ArcGISTopographic);

            // Provide Map to the MapView
            MyMapView.Map = myMap;

            // Get the path to the geodatabase
            string geodbFilePath = GetGeodatabasePath();

            // Load the geodatabase from local storage
            Geodatabase baseGeodatabase = await Geodatabase.OpenAsync(geodbFilePath);

            // Get the path to the symbol dictionary
            string symbolFilepath = GetStyleDictionaryPath();

            try
            {
                // Load the symbol dictionary from local storage
                DictionarySymbolStyle symbolStyle = await DictionarySymbolStyle.CreateFromFileAsync(symbolFilepath);

                // Add geodatabase features to the map, using the defined symbology
                foreach (FeatureTable table in baseGeodatabase.GeodatabaseFeatureTables)
                {
                    // Load the table
                    await table.LoadAsync();

                    // Create the feature layer from the table
                    FeatureLayer myLayer = new FeatureLayer(table);

                    // Load the layer
                    await myLayer.LoadAsync();

                    // Create a Dictionary Renderer using the DictionarySymbolStyle
                    DictionaryRenderer dictRenderer = new DictionaryRenderer(symbolStyle);

                    // Apply the dictionary renderer to the layer
                    myLayer.Renderer = dictRenderer;

                    // Add the layer to the map
                    myMap.OperationalLayers.Add(myLayer);
                }

                // Create geometry for the center of the map
                MapPoint centerGeometry = new MapPoint(-13549402.587055, 4397264.96879385, SpatialReference.Create(3857));

                // Set the map's viewpoint to highlight the desired content
                MyMapView.SetViewpoint(new Viewpoint(centerGeometry, 201555));
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString(), "Error");
            }
        }
}
}

uj5u.com熱心網友回復：

您可以按如下方式獲取樣式字典的檔案路徑：

  private static string GetStyleDictionaryPath()
    {
        return DataManager.GetDataFolder("c78b149a1d52414682c86a5feeb13d30", "mil2525d.stylx");
    }

對于地理資料庫檔案夾，您可以輸入地理資料庫的檔案路徑，如下所示：

private static string GetGeodatabasePath()
{
    return DataManager.GetDataFolder("e0d41b4b409a49a5a7ba11939d8535dc", "militaryoverlay.geodatabase");
}

uj5u.com熱心網友回復：

如果您嘗試將公共示例與您自己的資料一起使用，您可以簡單地替換代碼中的資料，如下所示：

// Get the path to the geodatabase
string geodbFilePath = "c:/path_to_gdb/mygdb.geodatabase";

// Load the geodatabase from local storage
Geodatabase baseGeodatabase = await Geodatabase.OpenAsync(geodbFilePath);

// Get the path to the symbol dictionary
string symbolFilepath = "c:/path_to_style/mystylx.stylx";

或修改GetGeodatabasePath和GetStyleDictionaryPath方法以指向您的資料位置。

標籤：。网 地理信息系统 arcgis-服务器 arcgis 运行时 arcgis-runtime-net

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