pixelcooker

in this video I would like to share how to simplify polygons data for non-topological format such as ESRI Shapefile, KML or JSON/GEOJSON. Perform polygon data manipulation such as simplify in non-topological gis data format if not done correctly will lead to causing slivers and gaps in the polygon border. Simplifying methods being used is also has a role in this problem.  The safest approach to do polygons simplify usually by converting the data to polylines first, then after simplifying, the data converted back to polygon. This approach will be tedious for large dataset, and prone to attributes table records matching loss.  This video is about how to avoids those kinds of problems. 

GeoJSON (Geo Javascript Object Notation) is an extension to standard JSON format that widely used in API Development. One thing that differentiating between JSON and GeoJSON is, GeoJSON incorporates Geographic Coordinates in the data. This geographic information enables GeoJSON to be displayed into online webmap and served into webgis apps or mobile gis apps.  In term of geospatial data,   GeoJSON supports the following geometry types:  Point ,  LineString ,  Polygon ,  MultiPoint ,  MultiLineString , and  MultiPolygon . Geometric objects with additional properties are  Feature  objects. Sets of features are contained by  FeatureCollection  objects.  Compared to other geospatial data format, GeoJSON is easy to maintain, simple, and plain just like XML, so it can be edited using certain parser or renderer dedicated to GeoJSON. Almost every Mapping API Framework like Mapbox, ArcGIS, Leaflet, Open Layers, or many others alrea...