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A seamless table enables a single layer in a map to be derived from multiple base data sets, such as a mosaic of raster image tiles. When MapInfo Professional creates a seamless table it makes a simple vector layer which contains a rectangle for each base data set with attribute data defining the file path to the files containing the base data.
Harvey balls are round ideograms used for visual communication of qualitative information. They are commonly used in comparison tables to indicate the degree to which a particular item meets a particular criterion.
Map symbols commonly employ multiple visual variables simultaneously. This can be used to reinforce the depiction of a single property; for example, a capital city having a symbol that is larger and a different shape than other cities, or a color progression on a choropleth map from pale yellow to dark green, using both hue and value.
An equirectangular projection simply maps the yaw and pitch (longitude and latitude) of a sphere linearly to a rectangular image. It produces a signature curved look. In addition, the distribution of pixel density (which can be visualized with Tissot's indicatrix) is suboptimal, with the usually more important "equator" getting the lowest density.
Map-related products Google Maps: A mapping service that indexes streets and displays satellite and street-level imagery, providing directions and local business search. Google My Maps: A social custom map making tool based on Google Maps. Google Earth: A virtual 3D globe that uses satellite imagery, aerial photography, GIS from Google's ...
cluster heat map: where magnitudes are laid out into a matrix of fixed cell size whose rows and columns are categorical data. For example, the graph to the right. spatial heat map: where no matrix of fixed cell size for example a heat-map. For example, a heat map showing population densities displayed on a geographical map; Stripe graphic ...
Web maps require the internet to host, so they are subject to link rot, making information inaccessible. [37] Unlike physical maps, this can have major impacts on the historical record if the web map is the only source for the data it presents. Web mapping is also used in geography games, notably of which is GeoGuessr.
A template window then pops up, where you fill in as much information as possible about the source, and give a unique name for it in the "Ref name" field. Click the "Insert" button, which will add the required wikitext in the edit window. If you wish, you can also "Preview" how your reference will look first.