gis

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Simplified (or smooth) polygons that contain the original detailed polygon

I have a detailed 2D polygon (representing a geographic area) that is defined by a very large set of vertices. I\'m looking for an algorithm that will simplify and smooth the polygon, (reducing the nu[详细]

2023-02-11 14:24 分类：问答
Is there a "service in area" algorithm based on US street addresses?

I have a database of US based street addresses for which a client of mine offers their services.I am working on a form that would allow a custome开发者_开发百科r to enter in their zip code or address[详细]

2023-02-09 06:10 分类：问答
Preferred layer to create track (line) on openlayers

Currently using openlayers as map u开发者_如何学Goi on my web app. The problem is i confused with many different layer type supported on Openlayers (which mean good btw). So anyone can suggest a suita[详细]

2023-02-08 18:15 分类：问答
Manifold/PostGIS data manipulation and export

I\'m currently working on a GIS database project using Manifold Ultimate. I am able to import data from PostGIS via the database开发者_如何学编程 console, and edit the data as a table object within Ma[详细]

2023-02-08 15:46 分类：问答
Where can I find some GPS unit test data? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-02-08 14:52 分类：问答
GIS API / shapefiles for startup (free or low cost)

Q1. I\'m looking for suggestions on which GIS/Mapping API to use for a startup.The app will need geocoding, street level maps, location tagging, and displaying data on the map, but not much else. (I\'[详细]

2023-02-08 14:45 分类：问答
MySQL Find Polygon Nearest to Point

I have a MySQL database that contains geo-tagged objects. The objects are tagged by using a bounding polygon that the user draws and my program exports into the database. The bounding polygon is store[详细]

2023-02-08 09:05 分类：问答
Openlayers marker appears in the center of the map

I have a new marker to place on the map. I use the following code var markers = [{\'ID\':\'431\',\'LATITUDE\':-33.85491,\'LONGITUDE\':151.19877}];[详细]

2023-02-08 01:14 分类：问答
python: sorting two lists of polygons for intersections

I have two big lists of polygons. Using python, I want to take each polygon in list 1, and find the results of its geometric intersection with the polygons in list 2 (I\'m using shapely to do this).[详细]

2023-02-06 20:56 分类：问答
Any idea how these lat/lon pairs are formatted?

I got this snippet which is part of GPX data, can\'t figure what format the lat/lon pairs are though...[详细]

2023-02-06 20:05 分类：问答