提出一套在Google地图上实施交互式制图的方案.该方案以Google Maps API V3和KML为基础,借助Ajax技术,有效解决了在Google地图上实时交互式采集、绘制、存储、显示、选择、编辑、查询多要素地理信息等基本问题,为建立基于Google地图的We...提出一套在Google地图上实施交互式制图的方案.该方案以Google Maps API V3和KML为基础,借助Ajax技术,有效解决了在Google地图上实时交互式采集、绘制、存储、显示、选择、编辑、查询多要素地理信息等基本问题,为建立基于Google地图的WebGIS奠定基础.所得数据也可下载到客户端,作为其他应用的基础数据.展开更多
给出KML空间数据查询的解决方案,并在基于Google地图建立的Web地理信息系统中予以实现.该方案采用Linq to XML方法实现KML属性查询,采用Net Topology Suite计算空间对象之间的拓扑关系,综合应用此两种技术解决KML空间查询.基于此方案,在...给出KML空间数据查询的解决方案,并在基于Google地图建立的Web地理信息系统中予以实现.该方案采用Linq to XML方法实现KML属性查询,采用Net Topology Suite计算空间对象之间的拓扑关系,综合应用此两种技术解决KML空间查询.基于此方案,在VS2010中开发出一套交互式KML空间查询工具,包括点选、连选、区域选择、依属性选择、去选等.展开更多
在自己的网站上嵌入谷歌地图应用,这无疑增强了网站的实用性、方便性。用户打开相关网页后,能从地图中直观查看地理位置等信息。通过谷歌地图应用,用户可以直接在地图上"划区域"、"定位星标点"等编辑操作,网页也可...在自己的网站上嵌入谷歌地图应用,这无疑增强了网站的实用性、方便性。用户打开相关网页后,能从地图中直观查看地理位置等信息。通过谷歌地图应用,用户可以直接在地图上"划区域"、"定位星标点"等编辑操作,网页也可以相应在地图上的点击事件、拖动事件等操作。Google MAp API v3第三版免费提供了以上服务。展开更多
A question about the analytical capability of Google maps is answered for three examples of pin maps, and polyline and polygon maps that are computer-programmed with the third version of the Google maps application. O...A question about the analytical capability of Google maps is answered for three examples of pin maps, and polyline and polygon maps that are computer-programmed with the third version of the Google maps application. One map reads XML data stored on the home server, whereas another downloads its data from an online fusion table, and the third includes pre-programmed data. Each map permits users to query mashup layers after the map has loaded. However, an analytical capability comparable to GIS should require users to have access to their data for analysis with their own functions while the map is loading. The technical constraint of asynchronous loading of data for Google maps is illustrated for each map. In conclusion, only one map has an analytical capability that is achieved by means of deprecated synchronous loading of data.展开更多
文摘提出一套在Google地图上实施交互式制图的方案.该方案以Google Maps API V3和KML为基础,借助Ajax技术,有效解决了在Google地图上实时交互式采集、绘制、存储、显示、选择、编辑、查询多要素地理信息等基本问题,为建立基于Google地图的WebGIS奠定基础.所得数据也可下载到客户端,作为其他应用的基础数据.
文摘给出KML空间数据查询的解决方案,并在基于Google地图建立的Web地理信息系统中予以实现.该方案采用Linq to XML方法实现KML属性查询,采用Net Topology Suite计算空间对象之间的拓扑关系,综合应用此两种技术解决KML空间查询.基于此方案,在VS2010中开发出一套交互式KML空间查询工具,包括点选、连选、区域选择、依属性选择、去选等.
文摘在自己的网站上嵌入谷歌地图应用,这无疑增强了网站的实用性、方便性。用户打开相关网页后,能从地图中直观查看地理位置等信息。通过谷歌地图应用,用户可以直接在地图上"划区域"、"定位星标点"等编辑操作,网页也可以相应在地图上的点击事件、拖动事件等操作。Google MAp API v3第三版免费提供了以上服务。
文摘A question about the analytical capability of Google maps is answered for three examples of pin maps, and polyline and polygon maps that are computer-programmed with the third version of the Google maps application. One map reads XML data stored on the home server, whereas another downloads its data from an online fusion table, and the third includes pre-programmed data. Each map permits users to query mashup layers after the map has loaded. However, an analytical capability comparable to GIS should require users to have access to their data for analysis with their own functions while the map is loading. The technical constraint of asynchronous loading of data for Google maps is illustrated for each map. In conclusion, only one map has an analytical capability that is achieved by means of deprecated synchronous loading of data.
