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Wednesday, January 28, 2009

Raster Rivers & Railways



Most of the major interactive map providers, such every bit Google Maps in addition to Bing Maps, are vector maps. However they didn't stimulate every bit vector maps. Both Google Maps in addition to Bing Maps began life every bit raster maps.

Influenza A virus subtype H5N1 raster map is a map which is made from lots of static map images. An interactive raster map is essentially a tiled grid of lots of unlike images, each containing a unlike utilisation of the map. When you lot zoom inwards on an interactive raster map novel to a greater extent than detailed map images are loaded into the map.

On the other hand, inwards really uncomplicated terms, a vector map uses map information rather than static images. Map features such every bit edifice footprints, roads, rivers, elevation etc. are all served every bit unlike types of data. Influenza A virus subtype H5N1 vector map is basically a database of points, lines in addition to polygons. Other types of information tin endure assigned to this data, such every bit the peak or the historic catamenia of a building. This makes vector maps really useful for analyzing in addition to visualizing geographical data.



Today's #30DayMapChallenge is to create a raster map. Lyzi Diamond of Glitch has created a raster map of Global Rail Lines. The map was made for twenty-four hours 2 of the challenge, which was to brand a map amongst lines. However the Global Rail Lines map is also a smashing event of a raster map. The map uses information from Natural Earth to demo exclusively the world's railways.

I followed the same procedure every bit Lyzi took to create my ain raster map. My World Rivers map is an interactive raster map which shows exclusively the world's rivers in addition to no other geographical features. Like Lyzi I got my 10m railway information from Natural Earth. I also updated the information into Mapbox Studio to create a map mode in addition to and thus used the Mapbox Static Tiles API to serve the raster map tiles to my Leaflet.js powered interactive map.