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。
Rotation is a circular slide show: The following example creates a simple image rotation effect: In each The content of the first image description is displayed here！！！ Class Description Create a carousel Add an indicator to the rotation, that is, the dots at the bottom of the rotation chart, and the process of rotation can show the current number of pictures. Add a picture to switch Specify the content of each picture Add the button on the left and click to return to the previous one. Add the button on the right and click to switch to the next one. Used with .carousel-control-prev, set the button on the left Used with .carousel-control-next, set the button on the right Toggle the transition and animation effects of the picture, and if you don’t need this effect, you can delete this class. 7.23.1. How to create a carousel ¶
Example ¶
7.23.2. Add a description to the rotated picture ¶
class="carousel-item"> add inside class="carousel-caption"> to set the description text of the rotated picture: Example ¶
Title of the first image description
The class description used in the above example ¶
.carousel .carousel-indicators .carousel-inner .carousel-item .carousel-control-prev .carousel-control-next .carousel-control-prev-icon .carousel-control-next-icon .slide