Data set
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Data sets offerred for deposit should be accompanied by:
____ Signed forms which stipulate how and by whom the data can be reused, and how the data and its documentation will be transferred to the Archaeology Data Service.
Virtual Data Sets - Smart Data for Environmental Applications
Andrej Vckovski and Felix Bucher ...
Data Set Characteristics
SRTM data were processed in a systematic fashion using the SRTM Ground Data Processing System (GDPS) supercomputer system at the Jet Propulsion Laboratory.
data set -- a collection of related data.
depth -- perpendicular distance of an interior point from the surface of an object.
Data Set
A named collection of logically related data items arranged in a prescribed manner.
Database ...
Data Set Credit:
U.S. Bureau of the Census
Washington State Office of Financial Management: Forecasting Division ...
Data Sets - A collection of values that all pertain to a single subject.
Data sets used in our experiments
figure 6
I have chosen the easiest way to find free elevation data in grid format: searched for DEM data on the Internet and downloaded the Concrete West quadrangle of Washington state (the first complete quad on ...
Definitions: key data sets Source: GETIS glossary Data sources essential for a specific application.
Glossary Index
Overview ...
Data sets can represent the following information:
Raw measurements (such as satellite imagery)
Compiled and interpreted information
Data derived using geoprocessing operations for analysis and modeling ...
DATA SET
An organised collection of data with a common theme.
DATA STRUCTURE
A logical arrangement of data used by a specific computer system for data management, storage, and retrieval. It includes a reference linkage system between data items.
a data set of voxels for a macromolecule
A voxel represents the sub-volume box with constant scalar/vector value inside which is equal to scalar/vector value of the corresponding grid/pixel of the original discrete representation of the volumetric ...
The data sets you will create presently cannot be saved under certain circumstances (exceptions will be noted). Thus, PIT is essentially a training tool for learning by doing the basics of image processing.
The data set and a prepared ArcMap document has been assembled as realestate.zip. Right-click to save this file, and then extract it to a new directory on your local hard drive, c:\temp\realestate.
This data set has severaL drawbacks as compared with the data sets discussed in previous articles. The coverage, although evenly distributed across the earth's surface, is very sparse.
Grid data sets come from many sources: remote sensing devices, converted topographic maps, interpolated point data, conversion from vector features, and derived from other features (through distance, proximity, and density calculations, for instance).
The 3D data set can be viewed at a user specified angle and distance or animated using R2V's 3D OpenGL based display functions.
For large data sets (thousands of data points) it is suggested to zoom into a smaller representative area and test whether the parameters chosen (e.g. defaults) are appropriate.
geographic data set One of seven geographic data types supported by ArcInfo. Geographic data sets in ArcInfo include coverages, grids, DBMS tables, tins, images, lattices, and CAD drawings.
To obtain test data sets at UNB, we used a receiver equipped with specialized firmware that allows acquisition of both LI and L5 signals simultaneously from the WAAS GEOs.
within a single data set
across data sets
e.g. uniform information about timber types throughout the database allows better fire fighting methods to be used, or better control of insect infestations ...
Minimum essential data set
MEGDR
Mission Experimental Gridded Data Record(s) ...
Segmentation of a data set forms the basis of many of the extended data mining procedures. In addition to time (e.g., hourly time steps) the data can be grouped through spatial partitioning.
An image is stored as a raster data set of binary or integer values representing the intensity of reflected light, heat, or another range of values on the electromagnetic spectrum. Remotely sensed images are digital representations of the earth.
The median is the value halfway through a data set where the values have been ordered from lowest to highest. In an even data set, the median is the average of the two halfway values. Mediterranean Scrubland See chaparral.
Current CountyA data set developed by Allies® which offers a County name for every Postcode in the UK, (available in most of our software). A complete set of county data and our "Current County" is not available from PAF®.
Nowadays, there is a huge number of digital spatial data sets which have been developed by institutions, private companies or army services. These data sets are produced in various scales and characterized by various accuracy values.
Public Data Sets on Amazon Web Services
Global 30 Arc-second Elevation Data : GTOPO30
GeoNetwork - The portal to FREE spatial data and i...
Global Map and Data from International Steering Co...
Global Potential Evapo-Transpiration (PET) and Ari...
Although the shape of the earth closely resembles an oblate ellipsoid, many data sets used for global change research are represented and analyzed in the form of flat maps or arrays.
The combination of two separate spatial data sets (points, lines or polygons) to create a new output vector data set. These overlays are similar to mathematical Venn diagram overlays.
For example: given two data sets, forest patches and slope, what is the area-weighted average slope within each separate patch of forest?
Before assigning map symbology, it is important to have a good understanding of the data set to be mapped. The distribution of a data set can be explored by calculating descriptive statistics such as mean, mode, median, range, and standard deviation.
Dynamic Segmentation is a two-step process performed on a spatial data set comprised of linear features. First, a route system is created by associating adjacent line segments into one or more groups that have a definite linear sequence.
These data sets were provided by the U.S. Census or purchased from commercial vendors. While no data set was complete, Navigation Technologies was the most accurate and complete for the entire state. Local level street data were also evaluated.
In previous applications of the model, construction and modification of data sets that simulated various treatments were time- and labor-intensive. The combination of GIS technology with the model overcame this problem.
This approach supports both users with small data sets, where an internal data model is sufficient, and customers with larger data sets who utilize a DBMS for other corporate data storage requirements.
Applications and Related Data Sets
References
Appendix
The U.S. Geological Survey (USGS) is the lead Federal agency for the collection and distribution of digital cartographic data. The U.S.
Extensive Sample XML Schemas and Data Sets
Bentley Cadastre includes extensive sample XML schemas for North America and Europe.
A hypertext-like capability that allows for various kinds of data sets and software objects to be attached to geographic features and queried or initiated on request; e.g.
A geographic data set containing boundaries, such as land-water boundaries, for use as a starting place in automating other geographic data sets. Templates save time ad increase the precision of spatial overlays.
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ArcGIS Online maps are updated regularly as new or updated data sets are acquired and processed. Esri and its data integration partner will publish updates to existing basemaps at least twice per year.
How do you assign coordinates to a data set if the coordinate system of a data set is unknown?
The clearinghouse is not a central repository where data sets are stored, but rather a comprehensive listing of data being produced by government agencies, universities, utilities, and many other organizations around the country.
Because GIS has the ability to link data sets together by geography, it facilitates interdepartmental information sharing and communication.
Shapefile - "An ArcView GIS data set used to represent a set of geographic features such as streets, hospital locations, trade areas, and ZIP Code boundaries. Shapefiles can represent point, line, or area features.
Map extent is specified in the coordinate system of the coverage or other geographic data set used. Typically, the extent of the geographic database (or a portion of it defined by a zoomed-in view) defines the map extent for display.
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Access: Ability of a computer to reference a specific data set (single record, file, group of files, other) by identifying a specific sector of memory or the disk drive (server) where it is stored for the purpose of editing, assembling, ...
Combining or integrating various data sets has become possible. However, this has created the possibilities of integrating irrelevant or inconsistent data.
The exact nature of this pattern varies from data set to data set; each set of data has its own unique function of variability and distance between data points. This variability is generally computed as a function called semivariance.
Both data sets were taken at 30 second intervals. Instrumentation was an Ashtech Z-12 receiver. GPS data were dual-frequency pseudorange (both L1 and L2) incorporating ionospheric correction.
The concept of a Distributed Geographic Information (DGI) System refers to the use of the Internet and GIS technologies to provide access to geospatial information in a variety of forms, including maps, images, data sets, ...
The next page displays a list of all the data sets you have chosen. At the top of the page, click on the Show Result button.
What you get is a large table which includes all the demographic data you chose earlier.
Map Units: The coordinate units in which a geographic data set is stored. Map units can be inches, centimeters, feet, meters, or decimal degrees.
Meridian: A line on the earth's surface which follows the shortest distance from pole to pole.
To enlarge and display greater detail of a geographic data set.
Web Site © 2009 Northrop Grumman. All rights reserved.
Data and Maps © 2009 The Maryland-National Capital Park & Planning Commission. All rights reserved.
intersect: The topological integration of two spatial data sets that preserves features that fall within the spatial extent common to both input data sets.
1. Any station in a horizontal or vertical control network that is identified in a data set or photograph and used for correlating the data shown in that data set or photograph.
ArcMap - One of the 3 main components that make up ArcGIS. It is the interface that allows users to view data sets together, perform analysis and create maps. Also see ArcCatalog and ArcToolbox (GIS Centre, Dalhousie University) ...
DeLorme World Base Map
DeLorme North America Data sets
Earthmate GPS
PN-Series Handheld GPS ...
Georeferencing - The process of registering a geographic data set to an accepted coordinate system. See Geocoding.
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 See also: Information, GIS, Model, Geographic, Analysis
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