I'm developing an interactive web (HTM5) gis application wich the user draw an element (circle for example) and extract data from base map (OpenStreetMap).The features would be:
1º Base Map like OSM. 2º Control panel to draw a circle (in leaflet.draw). 3º Representation of selected objects within this circle area. 4º Save the selected objects into a variable.
The application would focus on census data where the user gets the number of people within that area.