9. Echarts

  • ECharts is an open source visualization library implemented in JavaScript, covering various industr...
    2024-01-19 23:00:03 UTC
  • 9.2.1. 1.Independent version ¶ We can download echarts.min.js directly ...
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  • In this section we will introduce you to some of the configurations that useECharts to generate charts. ...
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  • We have learned to draw a simple bar chart using ECharts in the previous section, and we will draw a pie chart in this...
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  • ECharts can change the color, shade, size, etc., of graphic elements or textthrough style settings. ...
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  • ECharts data is usually set in the setOption , if we need to load data asynchronously, we ca...
    2024-01-23 23:00:02 UTC
  • ECharts usage dataset manage data. dataset components are us...
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  • ECharts provides many interactive components: example components legend , title component ...
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  • The ECharts chart is displayed in the DOM node (container) of the height and width specified by the user. Som...
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  • To put it simply, data visualization is to display the data in the form of charts, and the professional expression is ...
    2024-01-24 23:00:02 UTC
  • In ECharts, we can call back and forth the corresponding function by listening to the user’s behavior. EChart...
    2024-01-24 23:00:02 UTC
  • The rising Sun Map (Sunburst) consists of a multi-layer ring graph. In the data structure, the inner circle is the par...
    2024-01-24 23:00:02 UTC

Principles, Technologies, and Methods of Geographic Information Systems  102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.