wkt

shapely.geos.ReadingError: Could not create geometry because of errors while reading input

烂漫一生 提交于 2021-02-07 20:23:12
问题 I'm getting the error in the title when I try to use shapely.wkt.loads on the following input: POLYGON((-93.577695846689437 40.813390731817726,-93.577674865779628 40.813444137603014,-93.577722549304582 40.8136196133706,-93.577945709640048 40.814004897950532,-93.5781135556297 40.814165115070466,-93.578243255589527 40.814229965262996,-93.578363418973865 40.814268111930119,-93.578405380213241 40.814252853305611,-93.578418731892242 40.814207077283442,-93.578376770009427 40.81411170971851,-93

Python地理空间分析指南PDF高清完整版免费下载|百度网盘

﹥>﹥吖頭↗ 提交于 2020-08-11 10:01:30
百度云盘:Python地理空间分析指南PDF高清完整版免费下载 提取码:0e23 内容简介 用非常流行的Python语言做地理空间分析; 学习高效、易学的地理空间分析指南; 书中含有典型且非常实用的开发案例,帮助读者快速掌握相关技能; 图文结合,将学习效率大大提高。 Python作为一种高级程序设计语言,凭借其简洁、易读及可扩展性日渐成为程序设计领域备受推崇的语言之一。 本书以地理空间分析为背景,介绍了Python在地理信息处理方面的应用技巧。全书共分为10章,分别介绍了Python与地理空间分析、地理空间数据、地理空间技术、Python的地理空间分析工具、Python与地理信息系统、Python与遥感、Python与高程数据、Python与地理空间高级建模、实时数据、综合应用等内容。 本书内容结构清晰,示例完整,适合希望了解测绘数字化和分析的读者,也适合想使用Python进行空间地理分析、建模和GIS分析的开发人员及研究人员参考阅读。 作者简介 Joel Lawhead 目前是NVision公司的CIO,该公司是业内屡获殊荣的地理信息集成和传感工程服务提供商。他还获得了管理专业人员资格认证(Project Management Professional,PMP),地理信息专业资格认证(certified GIS Professional ,GISP)。

GDAL——命令使用专题——gdalsrsinfo命令

放肆的年华 提交于 2020-05-04 23:31:31
GDAL——命令使用专题——gdalsrsinfo命令 前言   GDAL(Geospatial Data Abstraction Library)是一个在X/MIT许可协议下的开源栅格空间数据转换库。它利用抽象数据模型来表达所支持的各种文件格式。它还有一系列命令行工具来进行数据转换和处理。   主要针对: ogrinfo 命令 、 gdalinfo 命令 、 gdalsrsinfo 命令 、 gdallocationinfo 命令 、 gdal_translate 命令 、 gdaltransform 命令 等。这一节讨论 gdalsrsinfo 命令。    gdalsrsinfo 命令主要是用于获取空间坐标信息,如:WKT,PROJ.4 等格式。     软件环境:在安装Mapserver时集成安装。详见《 MapServer Configuring with IIS 》。 语法 Usage: gdalsrsinfo [options] srs_def srs_def may be the filename of a dataset supported by GDAL/OGR from which to extract SRS information OR any of the usual GDAL/OGR forms (complete WKT, PROJ.4, EPSG

PostgreSQL及PostGIS使用

百般思念 提交于 2020-04-28 07:37:42
基础知识 参考文档: http://www.postgis.net/docs/ PostGIS支持的GIS对象是OpenGIS Consortium(OGC)定义的“简单特征”的超集。OpenGIS规范定义了两种表达空间对象的标准方法:the Well-Known Text (WKT) form and the Well-Known Binary (WKB) form。WKT和WKB都包括有关对象类型和形成对象的坐标的信息。 WKT实例: POINT(0 0) LINESTRING(0 0,1 1,1 2) POLYGON((0 0,4 0,4 4,0 4,0 0),(1 1, 2 1, 2 2, 1 2,1 1)) MULTIPOINT((0 0),(1 2)) MULTILINESTRING((0 0,1 1,1 2),(2 3,3 2,5 4)) MULTIPOLYGON(((0 0,4 0,4 4,0 4,0 0),(1 1,2 1,2 2,1 2,1 1)), ((-1 -1,-1 -2,-2 -2,-2 -1,-1 -1))) GEOMETRYCOLLECTION(POINT(2 3),LINESTRING(2 3,3 4)) OpenGIS规范还要求空间对象的内部存储格式包括空间参考系统标识符(SRID)。创建空间对象以插入数据库时​​,需要SRID

超图SuperMap iObjects .NET Geometry转geoJSON&WKT&WKB

旧街凉风 提交于 2020-04-23 14:25:40
关键代码 var geoJSONTxt = Toolkit.GeometryToGeoJson(geometry); var bytes = Toolkit.GeometryToWKB(geometry); var wktTxt = Toolkit.GeometryToWKT(geometry); SuperMap.Data.Toolkit 中包含: static byte[] GemetryToWKB(Geometry geometry); static string GemetryToWKT(Geometry geometry); Geometry GeoJsonToGeometry(string strGeoJson); static void Geometry2ByteArray(Geometry geo, UGByteArray* arOutput); static string GeometryToGeoJson(Geometry geometry); static byte[] GeometryToWKB(Geometry geometry); static string GeometryToWKT(Geometry geometry); static PrjCoordSys PrjFromWKT(string wkt); static string PrjToWKT

NetTopologySuite Geometry&WKT&WKB&GeoJSON互转

送分小仙女□ 提交于 2020-04-23 13:11:00
WKT To WKB private static byte[] ConvertWKTToWKB(string wkt) { WKBWriter writer = new WKBWriter(); WKTReader reader = new WKTReader(); var wkb = writer.Write(reader.Read(wkt)); return wkb; } WKB To WKT private static string ConvertWKBToWKT(byte[] wkbBytes) { WKBReader reader = new WKBReader(); WKTWriter writer = new WKTWriter(); var wktText = writer.Write(reader.Read(wkbBytes)); return wktText; } WKT To Geometry WKTReader reader = new WKTReader(); NetTopologySuite.Geometries.Geometry geom = reader.Read(WKTText); GeoJSON To Geometry //引用NetTopologySuite.IO.GeoJSON //https://github.com

Pandas DataFrame: convert WKT into GeoJSON in a new column using Lambda function

旧巷老猫 提交于 2020-01-06 06:51:38
问题 I have some data in this format: Dep Dest geom ---- ---- ----- EDDF KIAD LINESTRING(3.961389 43.583333, 3.968056 43.580.... Which contains flight trajectories. The geom column contains the coordinates in WKT format. It is possible to convert them via the library geomet to GeoJSON format, which I want to do in a new column. In order to do this efficiently with Pandas, I am trying to do: from geomet import wkt import json df = .... #load data to df df['geojson'] = df['geom'].apply(lambda x:

GIS sample data for testing performance

こ雲淡風輕ζ 提交于 2020-01-05 03:36:34
问题 I need to test performance of queries based on spatial data. I decided to use sql server and geometry datatype. Now I need to have sample data (for example maps, cities etc). Do You know any resources that I can use to then load it into my database ? Thanks for any help 回答1: The U.S. Census Bureau makes all of their shape files available to the public. See here: http://www.census.gov/geo/www/tiger/ Once you have picked whatever shape files you want, you can import them into SQL Server using

GIS sample data for testing performance

青春壹個敷衍的年華 提交于 2020-01-05 03:36:11
问题 I need to test performance of queries based on spatial data. I decided to use sql server and geometry datatype. Now I need to have sample data (for example maps, cities etc). Do You know any resources that I can use to then load it into my database ? Thanks for any help 回答1: The U.S. Census Bureau makes all of their shape files available to the public. See here: http://www.census.gov/geo/www/tiger/ Once you have picked whatever shape files you want, you can import them into SQL Server using

光栅程序的通用选项

不羁的心 提交于 2019-12-29 08:04:18
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> Common options for raster programs 光栅程序的通用选项 All GDAL command line programs support the following common options. 所有 GDAL 命令行程序都支持以下通用选项。 --version Report the version of GDAL and exit. 报告 GDAL 版本并退出。 --formats List all raster formats supported by this GDAL build (read-only and read-write) and exit. The format support is indicated as follows: ‘ro’ is read-only driver; ‘rw’ is read or write (i.e. supports CreateCopy); ‘rw+’ is read, write and update (i.e. supports Create). A ‘v’ is appended for formats supporting virtual IO (/vsimem, /vsigzip, /vsizip, etc). A