${REST_ThemeDotDensity_Title}
${REST_ThemeDotDensity_Description}
//点击生成专题图触发事件
private async void commit_Click(object sender, RoutedEventArgs e)
{
ThemeDotDensity themeDotDensity = new ThemeDotDensity
{
//专题图中每一个点所代表的数值
Value = 10000000,
//1994年人口字段
DotExpression = "Pop_1994",
Style = new ServerStyle
{
//设置点符号
MarkerSize = 2,
MarkerSymbolID = 1,
FillForeColor = Color.FromArgb(255, 0, 180, 150),
}
};
//专题图参数设置
ThemeParameters dotDensityParams = new ThemeParameters
{
//数据集名称
DatasetName = "Countries",
//数据源名称
DataSourceName = "World",
Themes = new List<Theme>
{
themeDotDensity
}
};
//与服务器交互成功
try
{
ThemeService dotDensityService = new ThemeService(url);
var result = await dotDensityService.ProcessAsync(dotDensityParams);
//显示专题图。专题图在服务端为一个资源，每个资源都有一个 ID 号和一个 url
//要显示专题图即将资源结果的 ID 号赋值给图层的 layersID 属性即可
themeLayer.LayersID = result.ResourceInfo.NewResourceID;
if (!this.MyMap.Layers.Contains(themeLayer))
{
//加载专题图图层
this.MyMap.Layers.Add(themeLayer);
}
if (!themeLayer.IsVisible)
{
themeLayer.IsVisible = true;
}
}
//与服务器交互失败
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
internal static string ToJson(ThemeDotDensity dotDensity)
{
string json = "{";
List<string> list = new List<string>();
if (!string.IsNullOrEmpty(dotDensity.DotExpression))
{
list.Add(string.Format("\"dotExpression\":\"{0}\"", dotDensity.DotExpression));
}
else
{
list.Add("\"dotExpression\":\"\"");
}
if (dotDensity.Style != null)
{
list.Add(string.Format("\"style\":{0}", ServerStyle.ToJson(dotDensity.Style)));
}
else
{
list.Add(string.Format("\"style\":{0}", ServerStyle.ToJson(new ServerStyle())));
}
list.Add(string.Format("\"value\":{0}", dotDensity.Value.ToString()));
list.Add("\"type\":\"DOTDENSITY\"");
if (dotDensity.MemoryData!=null)
{
list.Add( "\"memoryData\":" + dotDensity.ToJson(dotDensity.MemoryData));
}
else
{
list.Add("\"memoryData\":null");
}
json += string.Join(",", list.ToArray());
json += "}";
return json;
}
internal static ThemeDotDensity FromJson(JsonObject json)
{
if (json == null) return null;
ThemeDotDensity dotDensity = new ThemeDotDensity();
dotDensity.DotExpression = json["dotExpression"].GetStringEx();
dotDensity.Style = ServerStyle.FromJson(json["style"].GetObjectEx());
dotDensity.Value = json["value"].GetNumberEx();
return dotDensity;
}
private async void commit_Click(object sender, RoutedEventArgs e)
{
//专题图子项数组
List<ThemeUniqueItem> items = new List<ThemeUniqueItem>
{
//专题图子项
new ThemeUniqueItem
{
//SmID字段值
Unique="1",
Style=new ServerStyle
{
FillForeColor = new Color {R=1,G=128,B=171},
LineWidth = 0.1
},
Visible=true,
},
new ThemeUniqueItem
{
//SmID字段值
Unique="247",
Style=new ServerStyle
{
FillForeColor= new Color {R=192,G=214,B=54},
LineWidth = 0.1
},
Visible=true,
}
};
//设置其他 SmID 字段显示风格
ThemeUnique themeUnique = new ThemeUnique
{
Items = items,
UniqueExpression = "SmID",
DefaultStyle = new ServerStyle
{
FillOpaqueRate = 100,
FillForeColor = new Color { R = 250, G = 237, B = 195 },
LineWidth = 0.1,
FillBackOpaque = true,
FillBackColor = Colors.Transparent
}
};
ThemeDotDensity themeDotDensity = new ThemeDotDensity
{
//专题图中每一个点所代表的数值
Value = 10000000,
//1994年人口字段
DotExpression = "Pop_1994",
Style = new ServerStyle
{
//设置点符号
MarkerSize = 2,
MarkerSymbolID = 1,
FillForeColor = Color.FromArgb(255, 0, 180, 150),
}
};
//专题图参数设置
ThemeParameters compostionThemeParameters = new ThemeParameters
{
DatasetName = "Countries",
DataSourceName = "World",
Themes = new List<Theme> { themeDotDensity, themeUnique }
};
// //与服务器交互成功
try
{
ThemeService compositeService = new ThemeService(url);
var result = await compositeService.ProcessAsync(compostionThemeParameters);
//显示专题图。专题图在服务端为一个资源，每个资源都有一个 ID 号和一个 url
//要显示专题图即将资源结果的 ID 号赋值给图层的 layersID 属性即可
themeLayer.LayersID = result.ResourceInfo.NewResourceID;
if (!this.MyMap.Layers.Contains(themeLayer))
{
//加载专题图图层
this.MyMap.Layers.Add(themeLayer);
}
if (!themeLayer.IsVisible)
{
themeLayer.IsVisible = true;
}
}
//与服务器交互失败
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}