View inWPFWinUIMAUIUWPView on GitHubSample viewer app
Display nautical charts per the ENC specification.
Use case
The ENC specification describes how hydrographic data should be displayed digitally.
An ENC exchange set is a catalog of data files which can be loaded as cells. The cells contain information on how symbols should be displayed in relation to one another, so as to represent information such as depth and obstacles accurately.
How to use the sample
Run the sample and view the ENC data. Pan and zoom around the map. Take note of the high level of detail in the data and the smooth rendering of the layer.
How it works
Specify the path to a local CATALOG.031 file to create an EncExchangeSet.
After loading the exchange set, get the EncDataset objects in the exchange set.
Create an EncCell for each dataset. Then create an EncLayer for each cell.
Add the ENC layer to a map's operational layers collection to display it.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
// Copyright 2018 Esri.//// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.// You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific// language governing permissions and limitations under the License.using ArcGIS.Samples.Managers;
using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Hydrography;
using Esri.ArcGISRuntime.Mapping;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Windows;
namespaceArcGIS.WPF.Samples.AddEncExchangeSet{
[ArcGIS.Samples.Shared.Attributes.Sample(
name: "Add ENC exchange set",
category: "Hydrography",
description: "Display nautical charts per the ENC specification.",
instructions: "Run the sample and view the ENC data. Pan and zoom around the map. Take note of the high level of detail in the data and the smooth rendering of the layer.",
tags: new[] { "Data", "ENC", "hydrographic", "layers", "maritime", "nautical chart" })]
[ArcGIS.Samples.Shared.Attributes.OfflineData("9d2987a825c646468b3ce7512fb76e2d")]
publicpartialclassAddEncExchangeSet {
publicAddEncExchangeSet() {
InitializeComponent();
// Create the UI, setup the control references and execute initialization _ = Initialize();
}
privateasync Task Initialize() {
// Initialize the map with an oceans basemap MyMapView.Map = new Map(BasemapStyle.ArcGISOceans);
// Get the path to the ENC Exchange Setstring encPath = DataManager.GetDataFolder("9d2987a825c646468b3ce7512fb76e2d", "ExchangeSetwithoutUpdates", "ENC_ROOT", "CATALOG.031");
// Create the Exchange Set// Note: this constructor takes an array of paths because so that update sets can be loaded alongside base data EncExchangeSet myEncExchangeSet = new EncExchangeSet(encPath);
try {
// Wait for the exchange set to loadawait myEncExchangeSet.LoadAsync();
// Store a list of data set extent's - will be used to zoom the mapview to the full extent of the Exchange Set List<Envelope> dataSetExtents = new List<Envelope>();
// Add each data set as a layerforeach (EncDataset myEncDataset in myEncExchangeSet.Datasets)
{
// Create the cell and layer EncLayer myEncLayer = new EncLayer(new EncCell(myEncDataset));
// Add the layer to the map MyMapView.Map.OperationalLayers.Add(myEncLayer);
// Wait for the layer to loadawait myEncLayer.LoadAsync();
// Add the extent to the list of extents dataSetExtents.Add(myEncLayer.FullExtent);
}
// Use the geometry engine to compute the full extent of the ENC Exchange Set Envelope fullExtent = dataSetExtents.CombineExtents();
// Set the viewpointawait MyMapView.SetViewpointAsync(new Viewpoint(fullExtent));
}
catch (Exception e)
{
MessageBox.Show(e.ToString(), "Error");
}
}
}
}