Cheryl Wynn February 22, 2021 Map
Conformal projection: These projections maintain angular relationships and show accurate shapes while covering small areas. Such maps are useful for navigational or meteorological purposes where angular relationships are important. Equidistant projection: Maps that maintain accurate distances along given lines or from the center of the projection are based on this principle of equidistant projection. Such maps are used for navigation and for radio and seismic mapping. The Equirectangular projection and the Equidistant Conic projection are two examples of this category. Azimuthal (or zenithal) projection: A projection that maintains accurate angular relationships and directions from a given central point use this projection. Maps for aeronautical purposes use this principle. The Lambert Azimuthal Equal-Area projection and the Gnomonic projection are examples of how azimuthal projection is used for map making.
Cartographers use a system called projection to depict the three-dimensional data of the surface of the Earth to a two-dimensional presentation. The Mercator Projection is the most popular projection for the map of the world. In the aeronautical realm, they use conical projections. With the galloping strides in the information technology, cartography has attained greater sophistication. Geographic Information System (GIS) has made it more scientific, accurate and adaptive to fluctuations in various fronts. Labeling is the system of specifying geographic features like cities, lakes, rivers, etc. in a map. For cartographers, labeling is difficult with the increase in density. Maps are created for the world, the continents, the countries, the provinces or states, smaller units like districts, cities, towns, etc.
There are some maps that combine all the above mentioned principles or use a compromise between them to depict the world and countries. For example, Robinson projection that showed the entire world at a glance can be said to be a compromise between the equal-area and conformal map projection. The objective behind its creation was to show the entire globe as a flat image. However, the Robinson projection was replaced later by the more modified version called the Winkel tripel projection, which is considered to be a blend of the azimuthal Aitoff projection and the equirectangular projection. At present, digital maps use either one or more than one of these aforesaid map projection types to create interactive maps that not only show the data in a much reliable way but also let the users utilize the maps to get additional information based on add-on clickable icons, pushpins, tool tip or mouse over info boxes etc. If you still havent enjoyed the use of digital flash maps with several user friendly, interactive features, its time to shift from the traditional paper maps to see the sales graphs soar.
Interactive map making software usually supports custom definable regions, areas and location points. Users can select pre-designed flash map templates, and easily change color settings of countries or counties, and pinpoint locations on the map by using pushpin buttons or icons. A hover over tooltip box can be displayed with your own text, images, with links to another web page, PDF documents, or sites on the World Wide Web. As the main purpose of these maps are for navigation or data representation purpose, geographical details such as highways, buildings, rivers are not always necessary, which makes the map cleaner and easier to navigate by visitors. With few click-through on the national, state or county map, visitors can quickly find information or be redirected to specific page about a particular location on the map image.
Business application of map messaging has proven to be similar to personal computers, Instant messaging, and the World Wide Web, in that its adoption for use of personal map positioning and business communications medium was driven primarily by individual employees using consumer software at work, rather than by formal mandate or provisioning by corporate information technology departments. Tens of millions of the consumer IM accounts in use are being used for business purposes by employees of companies and other organizations. In response to the demand for business-grade MIMS and the need to ensure security and legal compliance, a new type of instant messaging, called "Enterprise Map Messaging" ("EMM") was created trough one application (SingleGalaxy).
There are other options worth knowing about: firstly the Active Maps which come in both Landranger and Explorer ranges and have a laminated, waterproof cover to protect your map from the rain and elements when out and about; secondly there are the custom-made maps which allow you to choose where the centre of your map will be. These are particularly handy if the route you want to follow will require buying 2 or more maps or you want maps of the countryside surrounding one central point on all sides e.g. the area around a campsite or accommodation or even your house! Both types of map are more expensive than basic OS Explore and OS Landranger maps. Check your whole walk area is covered: Select the type of map you require and then check on the map detail that your whole route is covered. The last thing you want is to realise that half your intended route is missing when you set off for your walk! If necessary you will need to get additional maps for adjoining areas. Each map has a number in the top right hand corner of the cover which along with the name is the reference you will need to select the correct map to purchase.