Sondra Trujillo 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.
The GPS Database Most of the more costly GPS units come with an integrated GPS database program. The GPS database contains permanent waypoints that help the system recognize your location and guide your travels. A GPS system used during flights, for example, would usually have a GPS database with various airports and other navigational tools that aid in tracking their position. With these waypoints already programmed into the database, you can simply choose your destination and map your route without additional typing or searching. Most GPS mapping devices include a basic GPS database with cities and towns, major streets, and some side roads. Some GPS units have an empty database that the user must create. Global positioning systems first came into use during the 1960s and there are currently at least 24 GPS satellites in orbit. These advancements in GPS technology led to GPS mapping, making it easy to map practically any location. GIC GPS mapping software allows instant access to images of practically any location. Sometimes the resolution and clarity of the satellite image is so good, you can see cars and trees in the image.
In the course of researching an old building, your home or an ancestors house, maps can provide some additional and interesting information about the building and its neighborhood. They show details in ways not examined by other sources, and can often provide leads for further exploration. Atlases and Maps Atlases and maps provide a visual history of an area. While a map is usually just one sheet of paper, an atlas is generally a bound collection of maps, charts, plates or tables. Historical city and county maps and atlases may show your home on them, and perhaps even list the owners name as well. These maps often show the location of roads and other landmarks that may no longer exist. You might find these at city hall, county courthouses or local libraries or archives.
Fire Insurance Maps During the late nineteenth and early twentieth centuries, fire insurance maps were periodically drawn up for cities and towns in the United States. These maps were commissioned by insurance companies in order to more accurately calculate fire risk, depicting the layout of the town and showing each existing building. The maps offer a great deal of information, and can show the outline of the building, the building material, the number of stories, doors, windows and chimneys, the address and lot lines, street widths, water pipes, hydrants and cisterns. The Sanborn Company was the largest, but not the only, fire insurance mapping firm. The Sanborn Company was founded in 1867, and created fire insurance maps from 1867 until 1969.
It is estimated that almost $800 billion will be spent on travel and tourism in 2011 and nearly two billion business and leisure trips will be made in the United States alone. How will these travelers discover where to stay, eat, shop and play? How will they learn about the businesses in your town? When I travel or visit a new place I look for fun and informative maps to help me plan my trip before I go. I want to learn a little about the area, find places to stay, and know what to expect when I get there. Once I arrive at my destination I need an easy way to find nearby attractions, restaurants and other businesses. Getting a sense of the neighborhood and some background information makes my visit more enjoyable. An interactive map can display photos, videos and descriptions of hotels, points of interest, historic sites, shopping areas or museums, and you can click right from the map to advertiser web sites to book accommodations or get more details. Does your community have an interactive map to promote tourism?