Geographic Information Systems Stack Exchange by Kiwix

Q&A for cartographers, geographers and GIS professionals

Most popular questions

376 Measuring accuracy of latitude and longitude? 2011-04-18T07:16:43.410

211 Difference between projection and datum? 2010-08-03T02:25:04.963

184 Seeking examples of beautiful maps? 2010-10-30T22:56:03.120

151 EPSG 3857 or 4326 for GoogleMaps, OpenStreetMap and Leaflet 2013-01-24T07:06:58.897

148 Installing File Geodatabase (*.gdb) support in QGIS? 2012-05-28T03:57:07.400

142 What free programs should every GIS user have installed? 2011-07-12T20:47:36.020

138 Comparing various JavaScript mapping libraries? 2011-04-01T12:24:19.513

127 Accessing ArcObjects from Python? 2010-07-22T21:20:28.293

114 What are Definition, Algorithms and Practical Solutions for Concave Hull? 2010-08-16T06:05:07.253

110 Accounting for Colour Blindness when designing maps? 2010-10-25T16:09:15.727

107 Difference between WGS84 and EPSG:4326? 2010-11-09T17:10:44.613

102 Adding Basemaps from Google or Bing in QGIS? 2012-02-12T19:58:20.570

98 What is the difference between DEM, DSM and DTM? 2011-02-01T20:40:15.587

95 Converting between KML and shapefile (SHP) format? 2010-07-22T22:34:53.760

93 Algorithm for offsetting a latitude/longitude by some amount of meters 2010-10-26T22:43:34.587

91 Spatial clustering with PostGIS? 2011-06-28T15:39:01.297

88 Installing GDAL with Python on windows? 2010-09-29T19:08:15.200

87 Identifying Coordinate System of Shapefile when Unknown? 2011-03-28T17:48:36.053

85 Getting started with PostGIS? 2010-11-05T22:14:31.023

84 Choosing OpenLayers or Leaflet? 2012-09-20T16:40:41.490

83 How to Start Web Mapping? 2011-04-04T20:45:54.780

82 Managing large amounts of geospatial data? 2010-08-04T06:42:48.423

78 What are the pros and cons of PostGIS geography and geometry types? 2011-03-02T13:31:17.700

78 What ratio scales do Google Maps zoom levels correspond to? 2011-03-18T04:44:01.583

77 How much math does a GIS Analyst need to know? 2011-02-25T15:05:12.117

76 What books, journals, and electronic resources are most valuable for expanding knowledge of GIS? 2010-07-23T13:27:46.187

76 Does Y mean latitude and X mean longitude in every GIS software? 2011-06-29T22:16:04.177

76 Merging multiple vector layers to one layer using QGIS? 2012-05-09T07:20:43.613

75 Explaining what GIS is to 11 year old kid? 2010-08-02T22:41:44.240

75 Self-hosting Mapbox vector tiles 2014-12-09T20:31:37.393

72 What Makes a Map be classed as Badly Designed? 2010-10-31T04:08:14.953

71 Displaying coordinates and inputs as LatLon or LonLat? 2011-02-10T18:41:16.933

67 Are there any attempts to replace the shapefile? 2012-02-20T20:02:35.750

67 Alternatives to using Arcpy 2012-09-28T16:26:40.750

67 When to use ModelBuilder over Python scripting and vice versa? 2013-04-07T16:39:56.450

66 Calculating polygon areas in QGIS? 2012-04-12T19:05:11.933

65 How to build effective heat-maps? 2010-07-23T19:09:09.567

64 Seeking Mobile GIS applications for Android Tablets? 2011-07-21T00:02:08.537

61 Acquiring ArcGIS-like speed in Postgis 2012-08-11T21:59:16.503

60 Visualizing speed of movement on static (= printable) map? 2010-10-20T08:42:52.600

60 What strategies, criteria, or rules to use for selecting coordinate systems? 2010-10-20T21:09:50.770

60 Finding minimum-area-rectangle for given points? 2012-04-05T08:03:35.807

59 Creating Vector Polygons with rendering performance like GISCloud? 2011-10-01T17:20:30.123

59 Layers with same coordinate system should align/overlap in ArcMap but do not? 2012-02-20T02:19:15.133

58 Seeking Free and Open Source GIS Desktop packages? 2010-07-22T19:27:24.513

58 Visualising WKT geometry string in QGIS 2011-08-09T11:29:19.843

58 One dimensional map of the world? 2011-10-11T02:31:59.863

57 Python GDAL package missing header file when installing via pip 2012-07-05T17:38:47.173

57 What are Esri's new ArcGIS for Professionals and ArcGIS Pro? 2013-07-18T18:23:37.873

55 Creating drive time polygons using Open Source tools? 2010-10-27T06:58:51.523

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