the beauty of mapping


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Sunday, December 18, 2022

The Elastic Railway Map

Travel fourth dimension is frequently represented using an isochrone map. On an isochrone map lines tin sack hold upward drawn to connect points to demo areas which tin sack hold upward reached from 1 starting yell for inwards an equal go time.


Influenza A virus subtype H5N1 printed isochrone map is ordinarily restricted to visualizing the go times from 1 specific location. For example Francis Galton's Iscochronic Passage Chart, the outset known isochrone map, shows the go times from London to different parts of the world. The map visualizes how many days it would accept to go from London to different locations across the globe inwards 1881.


Interactive isochrone maps receive got the wages of beingness able to demo go fourth dimension layers for to a greater extent than than 1 location. They tin sack let users to yell for to a location on the map as well as redraw the isochrone lines on the fly. For example TravelTime allows you lot to click on a map to sentiment the go times from the selected location. Therefore, different printed isochrone maps, interactive isochrone maps tin sack demo go times from to a greater extent than than 1 starting point.

Interactive go fourth dimension maps are even so silent restricted inwards that they tin sack entirely actually demo 1 or ii isochrone layers at whatsoever 1 time. Once you lot start adding to a greater extent than than a few starting points to a map the overlapping ischrone layers teach difficult to read. If you lot desire to demo go times from to a greater extent than than 1 location at the same fourth dimension as well as on the same map as well as so you lot mightiness desire to role a go fourth dimension cartogram.


On Time Everytime is an interesting interactive map that attempts to demo the go fourth dimension betwixt every Dutch station at the same time. It does this past times moving stations closer or farther away from each other on the map based on the go fourth dimension betwixt each station. It hence takes the approach of a cartogram inwards visualizing go times, distorting geographical distance based on the fourth dimension it takes to go betwixt locations.

The On Time Everytime interactive map visualizes the displace of all trains on the Dutch railway network over the course of report of 1 twenty-four hr menstruum - Dec 14th 2018. It hence shows the go times betwixt the different stations at all times over the course of report of a unmarried day.

Because around trains are faster than others the go times betwixt private stations constantly changes depending on the speed of the educate traveling betwixt the ii stations. On Time Everytime overcomes this work past times moving the locations of the stations closer together or farther apart on the wing depending on the electrical flow train's journeying time. It hence takes an interactive cartogram approach to visualizing go time, distorting the geography of the map on the wing based on the speed of the trains currently shown on the map.


Nate Parrott has too created an interactive go fourth dimension cartogram to demo how long it takes to go betwixt stations on a world transit network. If you lot click on a station on his NYC Subway Travel Time map as well as so the New York underground map automatically redraws itself so that the distance to all stations represents the journeying fourth dimension from your selected station.

Users of the map are already familiar alongside the concept that transit maps distort geography as well as are non strictly geographically accurate. Therefore this interactive go fourth dimension cartogram plant actually good every bit a visualization of journeying times every bit it doesn't endure unduly from the commons problems of illegibility mutual to many fourth dimension cartograms.

Users are too familiar alongside the role of colored lines to demo the transit system's different lines. If you lot are already familiar alongside a business as well as its stations on the New York underground map as well as so you lot volition silent hold upward able to selection it out on a distorted fourth dimension cartogram based on the line's color. Even if you lot are confused past times the NYC Subway Travel Time map you lot tin sack silent mouse-over a station on the map as well as rapidly reorient yourself based on station names.