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Reference maps show the location of geographic boundaries, physical features of Earth, or cultural features such as places, cities, and roads. Political maps, physical maps, road maps, topographic maps, time zone maps, geologic maps, and zip code maps are all examples of reference maps.
- Physical Map of Africa
The map above reveals the physical landscape of the African...
- Geological Surveys
A world-wide listing of geological organizations. General...
- Physical Map of Africa
Explore the Google Maps Platform’s demo gallery to find examples of our custom next-generation maps and resources on how to make them your own.
Nov 21, 2017 · Maps are essential to understanding the world around you. They help you navigate unfamiliar terrain, locate nearby amenities and navigate home from a long day of sightseeing. For Example, a map may show the location of cities, road networks, rivers, or natural resources in a given region. Maps present their spatial information to the viewer at ...
Sep 16, 2023 · Map symbols are the visual tools used in cartography to represent real-world features on a map. These symbols, ranging from simple dots to intricate icons, serve as a bridge between the physical world and its graphical representation.
- Choropleth Maps
- Dot Density Maps
- Isopleth Maps
- Heat Maps
- Graduated Symbol Maps
- What About Cartograms?
Choropleth mapsrepresent data values in geographic areas with different colors and patterns. Data is categorized into classes, with each class assigned a unique color or pattern. For example, if you’re mapping sales data you could classify any sales amount under $5000, yellow, amounts between $5000 and $10,000 orange, and amounts over $15,000 red. ...
These maps represent each data point with a dot and are a great way to measure density. Regions with a large number of dots packed close to together are easily identified as high-density areas, whereas regions with few or no dots are clearly areas where your data is lacking. Dot maps have been around for a long time but are still extremely popular ...
Isopleth maps use colors and shades to represent data, similar to choropleth maps. However, they differ in that data isn’t grouped within predefined boundaries such as census tracts, counties, or states. Instead, contoured lines divide the map into different areas and show where data levels change.
Heat mapsmeasure density across a map. Like many other map types, they represent data using color. Darker shades indicate higher density areas while lighter shades show lower density areas. This type of map doesn’t use geographic boundaries. Instead, it works similarly to a dot density map. Plot individual data points on the map with colors assigne...
These maps show data using varying sizes of symbols. Larger symbols represent higher concentrations of data while smaller symbols represent lower concentrations of data. Similar to choropleth maps, data is placed into different categories. However, instead of color or shades representing data, different symbol sizes stand in for data categories. Th...
Cartograms visualize the concentration of data in a boundary by distorting its shape and size relative to other geographic areas on a map. While good for presenting the variance in density of data, cartograms tend to be hard to read and aesthetically displeasing. Cartograms provide a great value. However, the types of thematic maps listed above als...
May 18, 2021 · With these new full-scene models, we're able to detect and classify broad sets of features at a time without sacrificing accuracy, allowing us to map a single city faster than ever before. Single-feature AI model that classifies buildings.
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