随笔分类 -  Python--GIS

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计算线上距离线起点一定距离的点(线性参考)
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- from shapely.geometry import asShape import json import os from pyproj import Proj, transform # define t 阅读全文
posted @ 2016-08-07 14:30 ParamousGIS 阅读(1475) 评论(0) 推荐(0)
应用线来剪切多边形
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- from matplotlib import pyplot from descartes import PolygonPatch from shapely.ops import polygonize from shapely.geometry import Polygon, LineString, Poi... 阅读全文
posted @ 2016-08-07 13:29 ParamousGIS 阅读(785) 评论(3) 推荐(0)
几何图形相交计算
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- import os import json from shapely.geometry import asShape # define output GeoJSON file res_line_intersect = os.path.realpath("../geodata/ch05-01-geojso... 阅读全文
posted @ 2016-08-07 13:15 ParamousGIS 阅读(822) 评论(0) 推荐(0)
应用matplotlib绘制地图
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- from math import sqrt import shapefile from matplotlib import pyplot from descartes import PolygonPatch from shapely.geometry import Polygon, LineString... 阅读全文
posted @ 2016-08-07 13:09 ParamousGIS 阅读(5918) 评论(0) 推荐(0)
将PostGIS转化为GeoJSON
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- import psycopg2 import json from geojson import loads, Feature, FeatureCollection # Database Connection 阅读全文
posted @ 2016-08-07 12:56 ParamousGIS 阅读(4469) 评论(0) 推荐(0)
栅格转矢量
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- from osgeo import ogr from osgeo import gdal # get raster datasource open_image = gdal.Open( "../geodata/cadaster_borders-2tone-black-white.png" ) inpu... 阅读全文
posted @ 2016-08-07 12:47 ParamousGIS 阅读(1394) 评论(0) 推荐(0)
矢量转栅格
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- from osgeo import ogr from osgeo import gdal # set pixel size pixel_size = 0.00002 no_data_value = -9999 # Shapefile input name # input projection must... 阅读全文
posted @ 2016-08-07 12:44 ParamousGIS 阅读(1950) 评论(0) 推荐(0)
将数据导入PostGIS
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- import subprocess # database options db_schema = "SCHEMA=geodata" overwrite_option = "OVERWRITE=YES" geom_type = "MULTILINESTRING" output_format = "Post... 阅读全文
posted @ 2016-08-07 11:24 ParamousGIS 阅读(962) 评论(0) 推荐(0)
投影变换
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- import os try: import ogr import osr except ImportError: from osgeo import ogr, osr shp_driver = ogr.GetDriverByName('ESRI Shapefile') #... 阅读全文
posted @ 2016-08-06 11:56 ParamousGIS 阅读(829) 评论(0) 推荐(0)
读取SHP的投影信息
摘要：from osgeo import ogr shp_driver = ogr.GetDriverByName('ESRI Shapefile') shp_dataset = shp_driver.Open(r'../geodata/schools.shp') shp_layer = shp_dataset.GetLayer() shp_srs = shp_layer.GetSpatialRef()... 阅读全文
posted @ 2016-08-06 11:54 ParamousGIS 阅读(836) 评论(0) 推荐(1)
给SHP文件定义投影
摘要：#!/usr/bin/env python # -*- coding: utf-8 -*- import urllib.request import os def get_epsg_code(epsg): """ Get the ESRI formatted .prj definition usage get_epsg_code(4326) We use the ht... 阅读全文
posted @ 2016-08-06 11:50 ParamousGIS 阅读(1213) 评论(0) 推荐(0)
投影变换
摘要：#!/usr/bin/env python# -*- coding: utf-8 -*- import os try: import ogr import osr except ImportError: from osgeo import ogr, osr shp_driver = ogr.GetD 阅读全文
posted @ 2016-07-30 23:40 ParamousGIS 阅读(1101) 评论(0) 推荐(0)
Python开发GIS的应用组件包
摘要：Library name Description Reason to install NumPy This adds support for large multidimensional arrays and matrices It is a requirement for many other l 阅读全文
posted @ 2016-07-30 23:09 ParamousGIS 阅读(1822) 评论(0) 推荐(0)
通过GP加载卫星云图-雷达图-降雨预报图
摘要：# # MeteorologicalImageLoad.py# Created on: 2014-01-24 08:33:03.00000# Created by SmartMap# Usage: MeteorologicalImageLoad <analyzeType> <analyzeResul 阅读全文
posted @ 2016-07-22 08:41 ParamousGIS 阅读(1252) 评论(0) 推荐(0)

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