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。
Block grids are used to divide the content of the page equally: for example, to display four pictures in a row, you need to divide the width equally no matter what the screen is.
Can be used For another example, use paragraphs: You can set different sizes of screens to display different numbers of blocks by adding multiple grid block classes: Element plus
.small|medium|large-block-grid-num Class to create a block mesh. num Used to specify that the average score is the quantity: 8.36.1. Example ¶
<ul class="small-block-grid-3"> <li><img src="newyork.jpg" alt="New York">li> <li><img src="paris.jpg" alt="Paris">li> <li><img src="sanfran.jpg" alt="San Francisco">li> ul>
8.36.2. Example ¶
<ul class="small-block-grid-3"> <li><p>Just a Simple Example Text...p>li> <li><p>Just a Simple Example Text...p>li> <li><p>Just a Simple Example Text...p>li> ul>
Different sizes of screens show different quantities. ¶
8.36.3. Example ¶
<ul class="small-block-grid-2 medium-block-grid-3 large-block-grid-4"> <li><img src="newyork.jpg" alt="New York">li> <li><img src="paris.jpg" alt="Paris">li> <li><img src="sanfran.jpg" alt="San Francisco">li> <li><img src="newyork.jpg" alt="New York">li> ul>