grid
See Also: ESRI Grid
[cartography] In cartography, any network of parallel and perpendicular lines superimposed on a map and used for reference.
Grid-based map analysis is increasingly used to characterize conditions and impacts of infrastructure networks, such as pipe and power lines.
A grid system allows the location of a point on a map (or on the surface of the earth) to be described in a way that is meaningful and universally understood.
Grid Generation and GIS
Grid generation is a broad field with applications in aerodynamics, material science, biology, earth science, chemistry and physics, for example.
Grid Manager is a suite of tools that helps you create multiple grids, graticules, and borders for a variety of map products including nautical, aeronautical, topographic, parcel, street, and tourist maps.
Why Use Grid Manager?
Regular grid
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Grid ticks:
The small straight lines (ticks), spaced around the entire border, perpendicular to the neatline, represent the position of the brown overlapping grid.
The grid drawing may be turned off by using the -n flag.
The border drawing may be turned off by using the -b flag.
The coordinate text may be turned off by using the -t flag.
Grid layers
Overview
Grid layers are graphical representations of the ArcGIS and ArcInfo implementation of the raster data model. Grid layers are stored with a numeric value for each cell.
Grid
GIS data layer in raster format (cell-based representation)
Image ...
Grid Snaps: It is difficult to put your mouse exactly on (90,90,0) isn't it? Right now, our drawing has a resolution down to the inch. Our life would be simpler if we could make out mouse snap to even increments of 10 feet.
grid -- (1) a set of grid cells forming a regular, or nearly regular, tessellation of a surface; (2) a set of points arrayed in a pattern that forms a regular, or nearly regular, tessellation of a surface.
Grid
A pattern of regularly spaced horizontal and vertical lines forming square zones on a map used as a reference for establishing points. Grid examples are UTM, MGRS, and Maidenhead.
GRID A fully integrated grid (cell-based) geoprocessing system for use with ArcInfo. GRID supports a Map Algebra spatial language that allows sophisticated spatial modeling and analysis.
Grid Data 1. One of many data structures commonly used to represent geographic entities. A raster based data structure composed of square cells of equal size arranged in columns and rows.
Grid-Cell Data - Grid-cell data entry places a uniform grid over a map area, and the area within the cell is labeled with one attribute or characteristic, such as elevation averaged over all points.
Grid: A geographic data model representing information as an array of equally sized square cells arranged in rows and columns. Each grid cell is referenced by its geographic x,y location.
Grid Data
The grid provides the simplest way of dealing with the data. Grids speed the calculation time required for the computer to determine the location of the data points within the polygon.
Grid and Map Overlays
Silva Navimap -- electronic map reading / overlay device
U.K.: Yeoman PLC's Navigator Pro is a plotting table with GPS inputs that works with Admiralty charts. Quite impressive.
ESRI GRID
The Arc/Info Binary Grid format is the internal working format of the ESRI Arc/Info Grid product. It is also usable and creatable within the spatial analyst component of ArcView 3.x.
4 Grid references
Store grid references in an appropriate notation for easy transition to a GIS or conversion to an appropriate map projection (e.g.
The UTM Grid
The best known use of the transverse Mercator projection is the specialized form called Universal Transverse Mercator (UTM) projection system.
Grid computing
Utility computing
[edit] References
â†' The Internet Cloud
â†' Gartner Says Cloud Computing Will Be As Influential As E-business
â†' What's the difference Between Cloud Computing and SaaS?
Grid Overlay
Attributes Coded with Image
Advantages/Disadvantages
Other Forms of Coding
Image and Attribute Distinction
The graphic side of a map is the lines and descriptors. Examples of these lines are rivers or roads.
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).
Grid placement tools for ceiling mounted equipment
Bi-directional Lighting Analysis interface to Visual Pro in design mode ...
GRID CONVERGENCE at CENTRE OF SHEET 1°41' (30 Mils)
The Grid Convergence is normally given to the nearest minute and half mil. The Grid Magnetic Angle is normally given to the nearest 15 minutes and 5 mils.
Grid
Also " Coordinate System" . A coordinate system that projects the earth on a flat surface, using square zones for position measurements.
Ground Speed ...
GRID REFERENCE
The position of a point on a map expressed in terms of co-ordinates of a planar CO-ORDINATE SYSTEM.
Grid
A network of uniformly spaced horizontal and vertical lines employed to allow an exact reference to any point on a map.
Grid Referenced Information Display System; Gridded Resource Inventory Data System
GRS
Geodetic Reference System ...
A grid of numbered rows and lettered columns (or vice versa) superimposed on a map, used to find and identify features. Alphanumeric grids are commonly used as a reference system on local street maps.
baud rate ...
On-Grid goal: seeking support for high-precision networks
by Gavin M. Schrock
Galileo funded, filled out, held off ...
The grid-zone designation.
The 100,000-meter-square letter identification.
The grid coordinates (also referred to as rectangular coordinates) of the numerical portion of the reference, expressed to a desired refinement.
e.g. grid cells covering large areas
historically, natural resource GIS have been raster-based ...
7. 3D grid file creation and real time 3D display of the generated vector data. Animate the 3D display at any angle specified and see the vector data in a brand new way.
Such a grid can be placed anywhere on a map and used to assign locations to points on the map.
T-in-O maps ...
UTM Map grid and the Australian Map Grid
As is explained in the section tiled Explaining Some Jargon - Graticules and Grids there is a significant difference between the two. This is ...
Your new grid (really a raster file) will be just like the original, except that the errant values will now be excluded. Close ArcView, return to ArcMap, and add the theme to the view.
Creating a grid across the view can help to better reference the view. This can be especially important when printing out a map for later use.
Generally, grid cells are larger than the enclosed pixels in pictorial map displays, but the cluster of pixels within a polygon approximates the shape of the field.
Coverage Grid
After initialization the user is presented with a world map showing the currently defined Loran-C transmitters. Using zoom tools the user selects an area for coverage prediction.
in a regular grid of values, one for each cell,
a regular lattice of points or
a 'triangulated irregular network' (TIN) of points.
Digital Exchange Format (DXF)
ASCII text files defined by Autodesk, Inc.
If we place a 'grid' over our survey and assign a coordinate value to one main reference point we will create what is referred to in surveying as a 'local coordinate system'.
Graticule - The grid of latitudes and longitudes drawn on a map or a globe.
GRS80 (Geodetic Reference System of 1980) - A standard defining the size and shape of the Earth as adopted by the International Union of Geodesy and Geophysics in 1979.
41 a framework for recording spot elevations in a regular rectangular grid (matrix); an acronym originally created from Digital Elevation Model at US Geological Survey.
Uses complex mathematical equations and physical relationships to determine a variety of climate variables in a three-dimensional grid. Generalist Species Species that can survive and tolerate a broad range of environmental conditions.
Geocoding: The cross-referencing between specifically recorded x,y co-ordinates of a location, relative to a standard reference grid such as the NC State Plane Grid, and non-geographic data such as addresses or Zip codes.
Find My NearestA search that displays the geographic location of properties (for example, a company's branches) closest to an address, using Grid Reference data behind the scenes.
Grid ReferencesCoordinates that reference a geographic location.
point to grid interpolation Source: GETIS glossary The conversion from a geospatial data set that represents a surface with points and their attributes (e.g. terrain heights) to a grid (raster) data structure that represents the same surface.
Recorded x, y coordinates of a location are cross-referencing between a standard reference grid and non-geographic data such as addresses or zip codes to accurately map that location. In order to geocode, a geocoding service must first be defined.
For example if we want to deliver the data in a regular grid, but the samples are measured in scattered points we have to calculate the values of grid points from the samples using interpolation procedures.
For example an aerial photograph may need to be stretched (orthorectified) using photogrammetry so that its pixels align with longitude and latitude gradations (or whatever grid is needed).
This system is broken down into grid zones. For states extending predominantly east-west, this system uses the Lambert conformal conic projection.
The first is called "Calculations involved in preparing a grid of graticule" and is heavily math oriented, containing formulas for several projections. The second section is concerned with accurately drawing a graticule manually.
In contrast, the "raster" or "grid-based" format generalizes map features as cells or pixels in a grid matrix (figure 3.3). The space is defined by a matrix of points or cells, organized into rows and columns.
The program will prompt you for the grid spacing, a corner tie point, and the UTM zone. (Since ASTER images all seem to be oriented north and south, GEOTIFF only requires one tie point.) This data is available in the metadata (.met) file.
grid Network of uniformly spaced parallel lines intersecting at right angles.
Initial GIS software techniques were based on hierarchical grid cell systems. It became apparent that additional capabilities were needed for accurate cartographic representation and analysis of vector-based map data.
Raster references spatial data using a grid of cells (or pixels) , whereas vector data references spatial data using a series of coordinates.
 See also: Information, Map, Geographic, GIS, Area
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