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
《地理信息系统原理、技术与方法》  97

最近几年来,地理信息系统无论是在理论上还是应用上都处在一个飞速发展的阶段。 GIS被应用于多个领域的建模和决策支持,如城市管理、区划、环境整治等等,地理信息成为信息时代重要的组成部分之一; “数字地球”概念的提出,更进一步推动了作为其技术支撑的GIS的发展。 与此同时,一些学者致力于相关的理论研究,如空间感知、空间数据误差、空间关系的形式化等等。 这恰好说明了地理信息系统作为应用技术和学科的两个方面,并且这两个方面构成了相互促进的发展过程。