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O'Reilly Platform
book
Python语言及其应用(第2版)
by
Bill Lubanovic
March 2022
Intermediate to advanced
522 pages
13h 52m
Chinese
Posts & Telecom Press
Content preview from
Python语言及其应用(第2版)
402
|
第
21
章
21.7
地图
地图对许多企业来说价值重大。
Python
非常擅长制作地图,因此我们打算在这方面多花点
儿时间。管理层喜欢图形,如果你能快速地为所在组织的网站制作一张精美的地图,那么
绝对不会有什么坏处。
在
We
b
的早期,我曾经访问过
Xerox
的一个实验性地图绘制网站。当像
Google Maps
这
样的大型网站出现时,带来的是一种启示(以及“为什么我没有想到这一点并赚到数
百万?”)。如今,地图和
基于位置的服务
无处不在,在移动设备中大放异彩。
在该领域中,堆叠了大量的术语:绘图(
mapping
)
、制图法(
cartography
)、
GIS
(
geographic
information system
,地理信息系统)
、
GPS
(
global positioning system
,全球定位系统)、地
理空间分析(
geospatial analysis
)
等。
Geospatial Python
的一篇博文中有一张“
800-pound
gorilla
”
1
系统(
GDAL/OGR
、
GEOS
和
PROJ.4
)以及其周边系统(用猴子表示)的图片。它
们多数有
Python
接口。下面来讲讲其中的一些,先从最简单的格式开始。
21.7.1
格式
绘图世界有很多格式:向量(线)、栅格(图)、元数据(文字)以及各种组合。
作为地理系统的先驱,
Esri
公司在
20
多年前发明了
shapefile
格式
。一个
shapefile
实际上
由多个文件组成,至少包括以下
3
种。
.shp
“形状”(向量)信息。
.shx
形状索引。
.dbf
特性数据库。 ...
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Publisher Resources
ISBN: 9787115586223