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       
(Showing Draft Content)

符号地图

功能概述

符号地图以一个地图为背景,使用符号、图标或图片来标识数据点。

支持通过位置名称和经纬度两种方式来定位位置。

image

准备数据

地图组件使用位置信息进行数据定位,需要在准备数据时标记地理位置,这样在仪表板中才能被识别出来。

无论使用数据集或模型进行数据准备,都要将字段的数据类别标记为对应的地理位置。

比如本示例中使用的是数据集,将经纬度对应进行标记。

image

在数据模型中,数据类别的位置如下:

image

添加地图组件

将符号地图组件拖拽到仪表板画布区域。

image

数据绑定

添加地图组件后,数据绑定面板会自动打开。打开下拉列表,选择一个已经进行地理位置标记过的数据集或模型。

image

数据加载后可见标记过的地理位置字段前显示了一个小地球图标,这表示可以作为位置信息绑定到组件中。

image

将数据字段拖拽到绑定区即可完成数据绑定,此时地图也会根据数据进行绘制。

符号地图使用位置经纬度作为定位信息(当位置和经纬度都绑定了数据时,则以经纬度为准)。

image

type=info

提示

绑定位置信息时如未绘制成功,说明位置名称与标准地图名称不匹配,需手动匹配。点击地图组件右下角的“存在未匹配项目”进入配置界面,手动选择匹配的地理位置。

image

数据绑定说明

示意图

数据绑定区域

说明

image

位置

用于绑定位置字段,可绑定一个字段。

需要提前在数据集或模型中标记过地理位置字段。

纬度

您也可以不使用具体的地名作为位置信息,而是使用具体的经纬度。

如果同时绑定位置名称和经纬度,优先使用经纬度作为定位信息。

经度

与纬度配合使用,实现位置定位。可绑定一个字段。

符号

绑定符号标识字段,绑定后地图将以符号来表示数据,默认符号一致。

后续可以进行符号管理,使不同的字段值显示为不同的符号样式。

可绑定一个字段。

提示标签

提示标签是指当鼠标移至图形时,会出现相应的提示信息。

提示标签中默认会显示绑定区内绑定的字段内容,如果想要显示更多内容请将字段绑定至提示标签内。

image

进一步设置提示标签显示内容和格式。

image

最终显示效果如下:

image

更多介绍详见鼠标提示标签

钻取

使用位置作为地理数据时支持钻取行为。

如需实现数据钻取,则绑定与位置信息有钻取关系的位置数据。 如不需要数据钻取功能,则无需在钻取中绑定字段。

绑定数据时需按行政区划级别顺序从大到小绑定多个字段。

如位置绑定的是“销售省份”,那么就可以将”“销售城市”绑定至下方的路径设置绑定区中。实际预览时,就可以由省份钻取到城市。

有关数据钻取的更多介绍,请参考数据钻取中的介绍。地图的钻取相当于固定路径钻取。

数据处理

符号内绑定的字段支持两种聚合运算方式:第一个值、无。此外还可以进行筛选、重命名等操作。

使用“第一个值”时,地图上每个地理定位只会显示一个符号。

使用“”时,每个地理定位可能会显示多个符号。

image

外观和属性设置

选中组件后,在编辑区右侧选择属性设置或者直接双击组件,打开属性设置面板,进行属性外观设置。

image

关于动画、数据设置、数据标签、提示标签、标题、图例、整体外观样式等常规属性,请参考单个组件外观与属性设置

选项组

选项名称

说明

地图设置

显示底图

是否显示底图。

显示底图后,可以选择底图的样式,已经内置多种地图样式,您也可以自定义地图样式。

自定义底图样式的方法详见自定义底图样式

显示范围

指定预览时的显示范围。支持自动指定区域指定经纬度

自动:表示自适应显示范围,会根据当前的数据交互进行自动调整。

指定区域:表示指定显示的区域,不随当前交互数据进行自适应调整。

指定经纬度:指定显示的经纬度和缩放级别,不随交互数据进行自适应调整。

显示边界

是否显示底图中的边界线。可选择边界线的区域、颜色和线宽。

符号

标记大小

设置符号标记的大小。

符号透明度

设定符号标记的透明度。

符号管理

  • 当符号绑定区中绑定了数据时。

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在这里进行符号管理,单击管理按钮。

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为符号中所绑定字段的每个数据分配一个符号。支持使用内置符号或自定义一个图片。

符号管理

  • 如果符号绑定区中未绑定字段,那么符号仅用来显示位置。

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这里可以直接设置符号。

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示例资源下载

符号地图demo.zip

下载资源包,然后将其导入系统,可以看到具体的设计细节,方便您参考学习。