![]() You upload your data, convert that data to a map tileset, apply that tileset to one of Mapbox’s default map styles, then customize the style in Mapbox Studio. Mapbox is more similar to Fusion Tables in terms of workflow. While each company essentially sells the same end result – map hosting services that can serve large data sets as tiled maps – each delivers their products very differently. In the end I concluded two companies offered products that matched my needs: Mapbox and Maptiler. I spent a lot of time researching and testing available services and technologies. The goal here is to visualize large datasets on interactive maps with the lowest possible cost and difficulty. It is my goal to evaluate map technology providers from the perspective of a webmaster, not a GIS professional or programmer. Technologies outside of the Google ecosystem are largely geared towards GIS professionals, with little documentation or tools that help non-GIS people get started quickly and easily. Mapping a lot of data was easy with Fusion Tables, so I was shocked to find just how difficult competing products would be. Fusion Tables is being discontinued so I needed to find an alternative for mapping large datasets. More importantly, Fusion Tables rendered the data layer on the map on the server side, eliminating the inevitable performance issues on client machines that made mapping large datasets difficult or impossible This is what 2,715 data points looked like mapped with Google Fusion Tables. For those unfamiliar with Fusion Tables, it was a product that allowed for fast and easy rendering of large datasets on Google Maps.įusion Tables was easy to use, and allowed website owners to display many thousands of placemarks quickly and easily. For example, we built an interactive “floods” simulator.The impetus for the comparisons made in this article was Google’s announcement that they were discontinuing their Fusion Tables product. Since values can be manipulated even on the fly, you can create interactive tools in JavaScript. You can use them for trip planning, terrain analysis, microwave links planning, pipelines, and electric wires planning, etc.Ĭheck out this demo of the Elevation Profile. Terrain profiles have a wide range of applications. The traditional color model used mostly for the relief model in geographical maps contains green color for lowlands, yellow for highlands, brown for mountains, and a different tone of blue for bathymetry. However, we recommend using the RGB terrain tileset because it covers a bigger area of the Earth and allows you to customize the color of the hillshade.Īnother application where you can highlight elevation is hypsometry. PS: MapTiler Cloud also provides Hillshading tileset. It can be easily done in the integrated map style editor in MapTiler Cloud.ĭEM hill-shading is already present on our Outdoor map, which is available for free on MapTiler Cloud. You can even change the hill shading colors and light direction. You can add the data into your map in order to create a nice visual shaded relief for your maps. Since the data contain the encoded elevation values directly, there are many potential applications. ![]() If you would open any tile from the tileset in an image viewer, you would see something like this:ĭon’t be confused by the unusual look you will see at first glance: this is not yet a final product meant for direct viewing, but a base for adaptation. The main one is low traffic for web applications because the browser loads only the tiles in the current view with appropriate resolution and download additional data just in case the user zoom in or pan the map. Splitting DEM into raster tiles has all the advantages of a tiled map. 4 or 8 bytes in case of floating-point numbers) with sufficient precision. The format allows storing elevations very efficiently (3 bytes vs. The elevation model is split into tiles and each tile has elevations encoded into standard RGB image format where each pixel color (red, green, blue) can be turned into elevation using a smart formula:Įlevation = -10000 + ((R * 256 * 256 + G * 256 + B) * 0.1) Elevation data provides height above the sea level in meters for every single place in the world, measured for regions of approximately 30x30 meters. MapTiler Terrain-RGB tileset is available up to zoom level 12. The MapTiler Terrain RGB covers the land, and MapTiler Ocean RGB covers the ocean floor. Not only you can use this data to enrich your map styles with hill shade or colored slopes, but you can also use it in applications - such as elevation profiles, microwave link planning, etc. ![]() The MapTiler Terrain-RGB contains the digital elevation model (DEM) - global coverage. ![]()
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