A common problem with dynamic web maps is the way polygons and lines are displayed in lower zoom levels. At some point, these geometries become too small to be noticeable on the #map. A straight forward solution is to replace the polygon or line with a marker at the feature’s centroid position. The new Leaflet #plugin Leaflet.Deflate does just that.▻https://github.com/oliverroick/Leaflet.Deflate
FreeDraw allows you to draw a freehand polygon on the map – which is then converted to a normalised polygon which can be manipulated. demo : ▻http://freedraw.herokuapp.com ▻https://camo.githubusercontent.com/55c01123bc6ca471603ef19c1e2c8c3a582cbc78/687474703a2f2f692e696d6775722e636f6d2f3561623350346a2e706e67 Un #plugin qui utilise un strip de Calvin & Hobbes dans sa doc est forcément bon.
Clustr takes a text file containing longitude/latitude points, tagged with a bit of text, and attempts to generate minimal polygons that “cover” those points, using an “alpha” parameter to determine the notion of “coverage”. The polygons are written to an ESRI Shapefile, suitable for use in GIS software.