FileGDB(File Geodatabase) FileGDB是由Esri创建的一种采用标准关系数据库技术来表现地理信息的数据模型。其具有结构和性能上的优势:快速的性能、多样的数据关系、兼容存储栅格数据、优化空间索引以及数据压缩等。 GeoJSON GeoJSON是一种对各种地理数据结构进行编码的格式;它是基于Javascript对象表示法的地理空间信息数据...
NSIDC Frozen Ground maps: Maps of various types of frozen ground (permafrost) in the Arctic and various other areas. Data can be downloaded by clicking on the map name then selecting 'Access Data' Multisensor Analyzed Sea Ice Extent (MAISE): Sea ice extent for the Northern Hemisphere from ...
This opens theFile Geodatabasedialog box and allows you to browse to theCorktown.gdbfile geodatabase within the\data\folder of the project. Alternatively, you can browse to the\Corktown.gdb\folder within theCityEngineproject and right-click the folder and selectImport. While this may seem eas...
Geographical data is stored inGeoJSONformat.Typesare specified using thetypeProperty, i.e.{feature: { geometry: { type: 'Point', coordinates: [0, 0] } }, properties: { type: 'Alert', title: 'Bridge Removed!' }. Specify which GeoJSON feature properties to store when importing (Settings...
\gisData\慈溪变更数据\基础数据\地类图斑.gdb' # 输出表格的路径,注意: 表格的名称最好不要包含中文,否则可能会报错 time_str = str(datetime.now().strftime("%Y%m%d%H%M")) excelpath = './results/field-info{}.xls'.format(time_str) # 创建输出文件夹 makedirs_file(excelpath) if not arcpy....
olddata::newtype 例如,将double类型转换为文本字符串类型: SELECT 0.9::text; 搞半天,原来这玩意有手(册)就行,不用太费劲学。 内置函数 这里介绍下它有哪些功能函数,同志们心里有个底,需要时查查手册。 sum(expression) aggregate to return a sum for a set of recordscount(expression) aggregate to return...
data docs filegdb src .gitignore .nb-gradle-properties .project .travis.yml LICENSE NOTICE README.md RELEASE-NOTES.txt build-obsolete.xml build.gradle cpl-v10.html glpl-v3.html README License Info on Giscore NOTICE:As of 2024 this library repo is not supported. It has been subsumed und...
PostGIS查询指定范围的数据 对于上一篇PostGIS批量导入栅格数据中导入的气温数据,如何查询指定范围的气温呢? 比如,给定了经纬度范围,如何取出给定月份的数据?...existing database conn = psycopg2.connect('host=localhost port=5432 user=postgres password=post1231 dbname=postgis_in_action 3.7K20...
Attribute Types An attribute is a record of a non-spatial characteristic. Attributes may or may not be related to geospatial features. Attributes are often rendered as tables and may be stored alone in a simple text file, or included in a complex database. There are four types of attributes...
的shp文件为例StringstrDriverName="ESRI Shapefile";// 创建一个文件,根据strDriverName扩展名自动判断驱动类型org.gdal.ogr.DriveroDriver=ogr.GetDriverByName(strDriverName);if(oDriver==null) {System.out.println(strDriverName+" 驱动不可用!\n");return;}DataSourcedataSource=oDriver.Open(strVectorFile...