Chapter 1: Understanding Digital Maps
When you want to use a paper map, first you need to unfold it. You need a large space, probably an entire table, to do this.
digital map library : A series of directories and subdirectories designed to uniformly organize a collection of spatial data. Map libraries organize geographic data spatially as a set of tiles and thematically as a set of layers.
Digital Map: A computer-readable representation of a geographic area or phenomenon that can be displayed or analyzed by a digital computer. This is in contrast to an analog "paper" map.
E
F ...
Digital Map A machine-readable representation of a geographic phenomenon stored for display or analysis by a digital computer; contrast with analog map.
Digital map provider Navteq announced December 7 a new technology agreement that will allow the company to more rapidly deploy innovative collection capabilities and accelerate the collection, creation, and storage of 3D map data and visuals.
Digital Map Publishing, Geospatial Solutions, March 1, 2005.
Likened to Adobe Acrobat for GIS, Esri ArcGIS Publisher creates digital map files that can be shared (using ArcReader) with a wide range of users, including those who do not have or use GIS.
Digital maps for modern GPS devices typically include a basic selection of POI for the map area.[2] ...
digital map A map maintained in a computer readable electronic format.
digital maps Maps maintained in a computer readable electronic format that can be displayed to a computer screen and plotted on paper with the appropriate software.
Digital map storage is rapidly moving toward spherical referencing that uses latitude and longitude in decimal degrees for internal storage and on-the-fly conversion to any planar projection.
Digital Mapping, Inc.
DMMG
Direccion Nacional de Mineria y Geologia (Uruguay) ...
A digital map depicting the distribution of land cover in Wyoming has been completed as part of the National Biological Service (NBS) Gap Analysis Program (Gap).
NAVTEQ digital map data offers accuracy, detail, reliability, and flexibility.
The source (paper/digital map, GPS, data from mapping agency) and estimated error of survey base station co-ordinates
Details of the survey, including date time and purpose
Details of the thematic organisation of the survey ...
Coverage - (1) A digital map that forms the basic unit of vector data storage in Arc/Info. A coverage stores map data in the three basic forms of graphic elements, i.e. points, lines, polygons. (2) A single theme or layer of data (e.g.
In the context of digital mapping this includes digitizing, direct recording by electronic survey instruments, and the encoding of text and attributes.
Data Conversion: The translation of data from one format to another.
[LINK] To prepare the analysis, digital maps of the water service areas were stored in the GIS. Using the buffer function in the GIS, a half-mile zone was drawn around the water company service area.
Geographic Information System (GIS) A geographic information system merges information in a computer database with spatial coordinates on a digital map.
In capturing and analysing the work done on site, Framework Archaeology used modern surveying methods to build digital maps of the using standard mapping software from leading software companies.
Spatial Database Catalogs and Libraries provide users an interface to search and download the digital maps, but do not match the need for interactive mapping or other GIS functions.
Edge Matching is an important part of the creation of a digital map or GIS database. One digital map may encompass many paper maps.
Attribute All GISs have to store digital maps somehow. The organization of the map into digits has a major impact on how we capture, store, and use the map data in a GIS. GISs store data in an organized way as a database.
GIS readers are computer applications that are designed to allow users to easily view digital maps as well as view and query GIS-managed data. By definition, they usually allow very little if any editing of the map or underlying map data.
[ESRI software] In ArcGIS software, a digital map feature that represents a place or thing that has area at a given scale. A polygon feature may have one or more parts. For example, a building footprint is typically a polygon feature with one part.
The encoding of data in the context of digital mapping this includes digitizing, direct recording by electronic survey instruments, and the encoding of text and attributes.
Combine imagery in virtually any format and projection with the precision mapping capabilities of MicroStation and Bentley's geospatial applications for map production and digital map creation to support your business or government's requirements.
The most basic form of digital map data represents the same types of data that are displayed on paper maps. Digital maps use the same measurement frameworks, and frequently also use the same representation methods (e.g.
The civilian system of designating UTM Grid coordinates is straightforward and, since it uses only numbers, it can be handled by digital mapping software and Geographic Information Systems (GIS), ...
These digital maps of Bergen County, N.J. are all at the scale of 1:500,00.
The TIGER files comprise one of the most detailed computerized digital map databases ever developed for the U.S. More than 7 years and $200 million dollars were required to complete the TIGER files. The complete TIGER files for the entire U.S.
Digitizing - Paper maps can be used to create a digital map, for example, by using a digitizing mouse to trace the paper map. Lines can also be added to an existing digital map.
objects can be moved around digital map without redrafting
scale and projection change are relatively easy
differences between automated mapping and GIS are frequently emphasized ...
A term used by ARC/INFO defining a digital map layer which stores vector information.
Feature Class
A term used to define coverage elements such as arcs, nodes, or polygons.
While some information about maps can often be included in the metadata there is rarely enough room for the details now demanded by digital mapping professionals.
The representation of a map composed of graphic and attribute files in a digital mapping system. 2.
CMAC and the Geographic Department of the Council of Ministers (Royal Cambodian Government) are attempting to use R2V for Windows to leap directly into the computer mapping era, by creating digital map data from 1971 USDMA (United States Defense ...
Terrain and ore body modeling, exploration, drilling, mine planning, reclamation, and rehabilitation are important digital mapping elements in mining. The Kaiser Jamaica Bauxite Company creates GIS-based mine planning and operations applications.
The necessary GIS layers properly symbolized to create a common looking digital map of the District of Columbia
Business and Economic Development ...
The basic advantage of the process of parcel mapping is that we replace the cumbersome process of maintaining data on paper maps with digital maps resulting on better decision making, data sharing and operational costs and time.
Users: ...
The idea of producing maps of different scales on the basis of the captured large scale digital spatial data originated in the same time as the first national digital mapping project commenced in 1973 in the UK.
Geocode.com
Enter a U.S. address and obtain a map, exact latitude and longitude, Census place and tract code, and more. From the ETAK Digital Map Comapny.
Are you aware of any way I can take the digital maps from the USGS and
convert them to a shape file? Maybe there is a place where I can download
these files without converting them. Any help you can give would be
appreciated.
Subsequent lines of longitude are measured from zero to 180 degrees east or west (values west of the prime meridian are assigned negative values for use in digital mapping applications) of the prime meridian.
This is a type of digital map developed by the U.S. Bureau of the Census to support the 1990 population census. Census maps in TIGER format succeed the previous DIME format.
Open Access English Language Journals Portal
Basics of GPS and how it works ?
Geo tagging in GIS
Options Analysis in Irrigation Systems - OASIS
Water Resource Types
Basics of Digital Mapping
Principal Functions of GIS ...
FIPS 173 is the precursor to the SDTS (Spatial Data Transfer Standard), which includes standardized definitions for a variety of digital mapping terms, addressing federal requirements for accuracy. FIPS provides a U. S.
I've got a digital map of the planet > Earth that I'd like to print out and wrap around a sphere to make a > globe, and If I'm not mistaken, only one of those ovoid mercator > projections will work.....
 See also: Digital, Information, GIS, Map, Mapping
|
