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Home > What is the Global Map?

The Global Map contains 8 types of basic geographical data. Using this page as a guide, read the types of data you want into the GIS software application and overlay them in your favorite order. You will probably be able to find a new world of maps!

The 8 types of geographical data are basically categorized into two groups.

*Click the button, and you can see details.
			Data map
			It is primarily composed of lines and planes.By setting the planes to be clear, you can accumulate more than one layer of the geographical data.




			Base map
			It consists of opaque image data. Select one from four maps and use it as the base.

Base map

The maps of elevation, vegetation, land cover, and land use consist of opaque image data (raster data), so they are appropriate as a base map on the bottom. Even two or more base maps are accumulated, only the one on top of them is displayed. So select one from the four base maps.

*Raster Data
Raster data means image data such as digital pictures, which consists of regularly organized squares called pixels. It is appropriate for displaying sequential spaces and is easy to give detailed information such as gradation. Zoom-in affects the picture quality.

Data map

The maps of boundaries, transportation, drainage, and population centers are comprised of lines and polygons (vector data), so you can overlay them on a base map, or use them as a blank map without accumulating on a base map. However, it should be noted that coloring the polygons obstructs the view of the lower layers.

*Vector Data
Vector date consists of points, lines, and polygons to indicate matters on the earth, which is useful for expressing clear boundaries. Each point, line, and polygon has its own information of what, where, and how as an attribute. Zoom-in on vector data doesn 't cause jaggy images; however, special software is necessary to handle vector data.

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