Septima Skyggekort is an interactive map which visualizes the shadows cast past times Denmark's buildings at whatever hr of the 24-hour interval together with for whatever 24-hour interval of the year.
The map was created using the OpenLayers mapping library using meridian information from Styrelsen for DataForsyning og Effektivisering, the populace information agency of the Danish government. The meridian information appears to come upwardly from a Lidar survey of the whole of Denmark. This agency that y'all tin sack purpose the map to thought the length together with positions of shadows for whatever edifice together with for whatever tree inward the whole country. Just purpose the 2 slider controls on the map to conduct the 24-hour interval of the twelvemonth together with the fourth dimension of the 24-hour interval y'all wishing to run into visualized on the map.
Norway's The Shadow Visualization Demo is only about other impressive demonstration which shows dynamic shadows on an interactive map. This map uses digital terrain model information together with edifice meridian information from OpenStreetMap. Because the map knows the meridian of the terrain this map non exclusively shows the shadows of buildings but the shadows cast past times hills together with mountains every bit well.
Again y'all tin sack purpose the slide controls to conduct whatever fourth dimension of 24-hour interval together with whatever 24-hour interval of the year.
In New York y'all tin sack purpose the New York Times' Mapping the Shadows of New York City interactive map to visualize the shadows cast past times the city's famous heaven scrapers (and all of its other buildings every bit well.)
The Times says that almost Manhattan neighborhoods volition rest inward shadow for at to the lowest degree one-half of all daylight hours. They besides claim that the sum of fourth dimension a place spends inward shadow during daylight hours tin sack impact everything from aeroplane rental prices to the menstruum of human foot traffic on the city's streets.
The map uses edifice meridian information provided past times the city. With the attention of the Tandon School of Engineering at New York University the NYT used this meridian information to calculate the full let out of minutes that a given betoken spends inward shadow over the course of written report of a day.
If y'all are interested inward creating your ain shadow map together with therefore y'all mightiness last interested inward SunCalc.js, a javascript library for calculating the pose of the sun.
