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。
HTML supports ordered, unordered, and defined lists: Ordered list First list item Second list item Third list item Unordered list List item List item List item An unordered list is a list of items marked with bold dots (typical small black circles). Unordered list usage The browser displays as follows: Coffee Milk Similarly, an ordered list is a list of items, which are marked with numbers. The ordered list begins with List items are marked with numbers. The browser displays as follows: Coffee Milk A custom list is not just a list of items, but a combination of projects and their comments. Customize the list to The browser displays as follows: Black hot drink White cold drink Tip: paragraphs, newline characters, pictures, links, and other lists can be used inside list items. Label Description < ol > Define an ordered list < ul > Define an unordered list < li > Define list items < dl > Definition list < dt > Custom list item < dd > Define the description of a custom list item 11.15.1. HTML list ¶
HTML unordered list ¶
label
<ul> <li>Coffeeli> <li>Milkli> ul>
HTML ordered list ¶
label. Each list item starts with
label. <ol> <li>Coffeeli> <li>Milkli> ol>
HTML Custom list ¶
label begins. Each custom list item is specified by
start. <dl> <dt>Coffeedt> <dd>- black hot drinkdd> <dt>Milkdt> <dd>- white cold drinkdd> dl>
Precautions-useful Tip ¶
HTML list label ¶