8. Foundation

  • 8.34. Foundation Grid-medium Devic

    In the last chapter, we introduced the use of small devices .small-* Class, with a grid ratio of 25% and 75%: ....div...
    2025-10-25 13:33:57 UTC
  • 8.35. Foundation Grid-large equipment

    In the previous section, we introduced the grid layout for medium and small devices, where the proportion used on small devi...
    2025-10-25 13:33:53 UTC
  • 8.36. Foundation block grid

    Block grids are used to divide the content of the page equally: for example, to display four pictures in a row, you need to ...
    2025-10-25 13:33:54 UTC
  • 8.37. Foundation grid instance

    Below we collect some examples that are commonly used in the grid. 8.37.1. Three equal series ¶ This example demons...
    2025-10-25 13:33:53 UTC
  • 8.38. Foundation Icon reference Manual

    8.38.1. Foundation icon ¶ Foundation provides 283 icons, and you can use CSS to render them: change the size and colo...
    2025-10-25 13:33:54 UTC
  • 8.39. Foundation CSS reference manual

    8.39.1. Foundation default settin ¶ Foundation uses browser default font size ( font-size:100% ). For browsers on...
    2025-10-25 13:33:53 UTC
  • 8.40. Foundation CSS visibility

    8.40.1. Display elements according to screen size ¶ The following classes display elements based on the device (scree...
    2025-10-25 13:33:53 UTC

Principles, Technologies, and Methods of Geographic Information Systems

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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.