地图手机怎么写电子档文件怎么写

网站地图的文件格式是什么?_百度知道
网站地图的文件格式是什么?
我知道就是网站的链接汇总,但到底是html文件、什么的?怎么我有的又听说是robot.txt什么的。到底应该是什么文件
我有更好的答案
sitemap分为2种形式:1、sitemap.html : 这种主要是针对用户而言,让用户能够快速的寻找到自己所需的东西,也是方便搜索引擎来有效的爬取网页内容,提高网站质量。但是这种方法的出发点还是以用户体验度为主。2、sitemap.xml : 这种格式主要是谷歌自己推出的一种网站地图写法,你可以通过相关规范写出网站地图 然后通过“goolge管理员工具”提交,这样google的蜘蛛就能有目的的高效的快速的来访问网站,但是,提交的内容google蜘蛛没有保证一定都会收录!这个区一定要分清楚!
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来自团队:
网站地图的格式:xml。robot.txt 是搜索引擎说明文件,说明网站里哪些内容不被搜索引擎搜索爬取。
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我们会通过消息、邮箱等方式尽快将举报结果通知您。千图网提供精美好看的交通图片素材免费下载,本次作品主题是湖北省各地区地图文件,编号是,格式是cdr,建议使用CorelDRAW X7 及以上版本软件打开,该图片素材大小是1.781 MB。
湖北省各地区地图文件是由设计师湖北骏马传媒广告公司上传.
浏览本次作品的您可能还对 湖北省各地区地图文件& 十堰交通地图&感兴趣。登录查看更多精彩内容cdr文件格式:cdr版本:CorelDRAW X7编号:模式:RGB体积:1.781 MB
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MAP文件如何查看
MAP文件如何查看
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map是一种图像数据调用文件,可以模拟场景。可以使用可以用OziExplorer 3.95.4h打开这种文件。MAP文件主要有两种生成方法,一种是由系统自动生成,默认文件名为所建立的项目名(如XXX为项目名)加上.map后缀xxx.map,另一种在CMD文件中指定生成MAP文件,操作方法为在MEMORY指令前面加上“-m abc.map”,文件名可以任意。
专用地图文件格式。可能某两个软件都用.map作为扩展名,但是格式非常可能是完全不同的。一般游戏中.map比较多。还有一些电子地图也用这个作为扩展名。想打开特定的.map文件,就要找一下有没有该软件的地图文件查看器
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GIS地图文件在路网生成算法中的应用
  摘 要:本文主要研究了基于GIS和SQL Server的路网自动生成算法。文章首先分析了MapInfo数据格式的特点,并针对此特点通过MapX交换格式文件提取得到GIS属性信息,建立路网拓扑并存储于SQL Server数据库。然后通过SQL语句从数据库中动态获取所需数据,建立动态路网拓扑结构。 中国论文网 /9/view-5572052.htm  关键词:GIS;地图;MapInfo文件;路网生成   一、引言   空间数据的拓扑关系模型是地理信息系统的重要部分,当前商用地理信息系统中,主要采用 "空间实体+空间索引" 和POLYVRT结构两种模型[1]。MapInfo采用称作"空间实体+空间索引"的的拓扑关系模型。下面就对此两种模型拓扑关系模型做简要分析[2],并以mapinfo文件格式为例进行实际分析。   二、GIS数据模型分析   GIS数据模型一般分为空间实体模型+空间索引模型的拓扑关系模型与基于POLYVRT结构的拓扑关系模型两种。空间实体是由点、线、面三种基本类型组成[3],而每种空间实体内部包含其自身的各种空间属性,通过这种方式每个空间实体模型内部维护了自身空间信息,进而建立了空间的拓扑属性,例如MapX中的GetPart()等方法便可获得具体对象的空间属性。   POLYVRT是由美国计算机图形与空间分析实验室(Laboratory for Computer Graphics and Spatial Analysis)研制的一种以弧段(ARC)(或链段)为基础的拓扑数据结构。弧段可以有任意多个中间节点但只有两个端点,同时弧段有左右两个多边形。以上两种数据模型最大的区别在于两者对于模型的拓扑关系的存储。基于以上分析,现有的基于关系数据库的地理信息系统全部采用空间实体模型,本文中所使用的MapInfo也正是建立在这样一种空间实体模型之上。   表1 模型分析   三、mid/mif文件分析及提取   *.mif和*.mid这两个文件都为文本性质的文件,用户可以通过相应的文件读写方法实现对文件内容的读写[4]。GIS地图数据转为SQL Server数据整体流程图如下图1所示。   图1 GIS地图数据提取流程图   1)在MapInfo中打开要转换的数据图层(*.tab)文件,然后利用MapInfo "导出交换文件"的功能生成相应的mid/mif数据文件。   2)判断是否为合法的文件格式,得到mid/mif文件的文件描述符,设置起始图元id为-1。   3)得到下一个图元id,判断id是否正确,如果不正确,则退出,否则进入第四步。   4)得到id对应图元对象,判断图元类型。   5)若为点图元,则直行此步骤。根据图元对象,得到具体点的经纬度坐标,与点名称,将数据写入数据库。   6)若为线图元,则直行此步骤。根据图元对象,得到具体起始点的经纬度坐标,与点名称,将数据写入数据库。   7)返回第二步继续操作。   四、实现   伪代码如下:   打开mif/mid文件   得到起始图元id   while(id != -1) {   根据id得到图元对象feature;   得到图元类型type;   switch(type) {   case折线:{   得到折线中点的个数ncount;   取得起点和终点坐标及相关mapid信息;   存入数据库;   Break;}   case 点:{   得到折线中点的个数ncount;   取得起点和终点坐标及相关mapid信息;   存入数据库;   break;}   得到下一个图元id;}   五、结果   根据以上分析本文对MFI格式地图进行测试,下图4以西安市南二环中段的道路为例,展现了该道路分别在GIS、mif、和SQL数据库中的三种不同表示方式,从而有利于动态路网的生成。   图2 三种地图表示比较   参考文献:   [1]李劲东,基于GIS的长线局光缆抢修流程优化研究[D].华南理工大学,2007.   [2]张巨,刘雨. MapInfo空间数据库技术分析[J].微型电脑应用,1999,(10).   [3]陈晟,景宁,等.空间数据库实例分析[J].计算机工程与应用,1998,(9).   [4]张燕梅,赵伟,MapInfo通用数据交换格式的解析与应用[J].编程语言,2009,(21).   作者简介:程鑫(1990.10-),男,陕西西安人,长安大学信息工程学院,交通信息工程及控制,2012级硕士研究生;张恒(1990.1-),男,陕西西安人,长安大学信息工程学院,智能交通与信息系统工程,2012级硕士研究生;徐昊(1990.8-),男,陕西西安人,长安大学信息工程学院,通信与信息工程,2012级硕士研究生。
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