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Related Concept Videos

Levels of Use of a GIS01:29

Levels of Use of a GIS

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Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
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Plotting of Topographic Maps01:29

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Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
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In the past, planning projects such as schools or public facilities required extensive manual effort to gather and compile data. Information such as property boundaries, soil characteristics, road networks, zoning regulations, and flood zones had to be sourced individually from courthouses, utility providers, and registry offices. Assembling these datasets into a coherent format often took several months, delaying project timelines.The introduction of Geographic Information Systems (GIS)...
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GIS Software, Hardware, and Sources of GIS Data01:23

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A Geographic Information System (GIS) combines specialized software and hardware to effectively manage, analyze, and present spatial and related data. GIS software includes critical functionalities such as a user interface for easy navigation, database management tools for handling spatial and attribute data, and data retrieval features for efficient access. Analytical tools transform raw data into insights, while display functions produce maps and reports in various formats for effective...
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Geoid and Ellipsoid01:28

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The Earth's shape is best described as an ellipsoid, a slightly flattened sphere created by rotating an ellipse around its minor axis. This flattening results in the polar axis being about 21 kilometers shorter than the equatorial axis. In contrast, the geoid represents the Earth's gravitational shape and aligns with the mean sea level (MSL). The geoid is an irregular equipotential surface where gravity is perpendicular at every point. Variations in Earth's mass distribution cause geoid...
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Geographic Information Systems (GIS) are tools for storing, analyzing, and displaying spatial data alongside related attributes. Unlike traditional information systems that address general queries, GIS incorporates spatial components, enabling users to answer "where" and "how far." For example, GIS can process housing data linked to geographic locations like zip codes, allowing insights into population density or housing distribution through thematic maps.GIS integrates technologies such as...
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Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
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Lexcube: Interactive Visualization of Large Earth System Data Cubes.

Maximilian Sochting, Miguel D Mahecha, David Montero

    IEEE Computer Graphics and Applications
    |October 9, 2023
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    Summary
    This summary is machine-generated.

    Lexcube.org offers interactive data visualization for exploring large Earth science datasets. This tool democratizes access to complex Earth system science research, making big data accessible to the public.

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    Area of Science:

    • Earth System Science
    • Data Visualization
    • Geosciences

    Background:

    • Earth's subsystems are monitored and influenced by human activities.
    • Research on Earth's transformation is often inaccessible due to complex big data from models and observations.

    Purpose of the Study:

    • To present an interactive Earth data visualization tool, lexcube.org.
    • To overcome accessibility barriers in Earth system science research data.

    Main Methods:

    • Developed an interactive data cube visualization for terabyte-scale datasets.
    • Enabled exploration through space, time, variables, and model variants with low latency.

    Main Results:

    • Lexcube.org has attracted over 2800 users and 163,000 API requests since its release.
    • The tool successfully visualizes and provides access to large Earth science datasets.

    Conclusions:

    • Interactive visualizations like lexcube.org can democratize Earth system sciences.
    • This approach is relevant for exascale Digital Twins of Earth, removing data access barriers.