Moreover, they offer a high-resolution display on all zoom levels without increasing the file size of the tiles. Vector tiles are about 20–50% of the size of raster tiles so they take less time to transmit, requiring fewer resources for processing. That is why the vector tiles are more demanding on the client’s hardware. The map client on the end user's device will use a rendering engine to create the map in the form of an image that can be displayed to the end user to view. Vector tiles are transferred over the internet in the form of a geographic data package, which usually consists of individual tiles in the. So vector tiles make it easy to change the map's look & feel on the fly with minimum resources. The style also says whether the map element should be rendered at all, and what font and language are to be used for rendering the labels. Vector tiles are rendered on the client’s side with a style, which is a small text file that defines how certain map elements look and how they are displayed (e.g., a road can be defined as a solid red line placed on top of all map elements). But these tiles do not consist of raster images, they are made of mathematical interpretations of geometric features such as points, curves, or polygons. Vector tiles were introduced later, they also deliver data that are divided into roughly squared tiles. On the other hand, raster tiles are quite large in size, and therefore the loading time during panning and zooming on the map may be longer, depending on the network connection speed. So every time a user opens the map, the pre-rendered tiles are simply shown on the screen which means that the requirements for end-users' hardware are much lower while the server-side hardware requirements are higher. One solution, used by many web map providers, is to render tiles in advance before serving them from a server. Rendering raster imagery is CPU- and memory-consuming. Raster tiles have fixed styles, defined at the time they are created (rendered). Read more about zoomable maps and the pyramid scheme in this article.Īs raster tiles are images stitched together, they can be zoomed and panned but do not provide styling capabilities on the user’s end. This clever trick allows you to browse just a small part of the map without loading it whole while maintaining the feeling of exploring a single large document. jpg format) placed next to each other, ordered in a pyramid scheme. Zoomable raster maps consist of many raster map tiles (in the. Raster map tiles are actually nothing else than raster images. Raster images are stored in image files of varying formats. In computer graphics, a raster graphic is a dot matrix data structure that represents a generally rectangular grid of pixels (points of color), viewable e.g. Web maps based on raster tiles technology are older but still widely used approach by many. Raster vs vector map tiles Raster map tiles You can use many standard MapTiler maps of the whole world or create your own data set. With MapTiler you can take advantage of both map data types. Vector map tiles are faster to load, and less demanding on the server-side performance but more demanding on end-users hardware. Raster map tiles are larger in size, less demanding on end-users' hardware but more demanding on the server-side performance. Also, you will find out how to create raster or vector map tiles from your own data with MapTiler Engine. You will learn about different MapTiler products, including MapTiler Cloud and MapTiler Data that offer ready-to-use raster and vector tiles of the entire planet for your projects and applications. This article will help you understand the problematics of raster and vector map tiles and the main differences between these two map data types.
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