centerline vectorization
See Also: outline vectorization
[data capture] The generation of vector features along the center of connected cells. It is typically used for vectorizing scanned parcel and survey maps.
Centerline vectorization generates vector features along the center of the raster linear elements. This method is typically used for vectorizing scanned parcel, contour, or soil maps.
Centerline - "1. A line digitized along the center of a linear feature. 2.
Centerline: Linear feature representing the midpoint along a linear element like a road or stream.
street centerline - A real or imaginary line that is equidistant from the sides (usually pavement edges) of a travel path. Typically, these are the basis for network routing applications.
Street Centerline Data
DIRM staff evaluated a variety of street centerline data, U.S. Census TIGER 2007-1992, Environmental Systems and Research Institute (ESRI) Streetmap, Geographic Data Technologies Dynamap 2000 and Navigation Technologies.
centerline
clearway
an area beyond the takeoff runway that is under the control of airport authorities where terrain or fixed obstacles may not extend above specified limits (these areas may be required for turbine-powered operations and the size ...
Use road centerline, flow line, or another line as reference for all design features
Ongoing design control through nomination of highway boundaries, project limits and constraints ...
The initial centerline for the primary layout of the MSS was drawn by Jim Kodak, the opto-mechanical design engineer who designed the Pioneer spacecraft optical camera, the first instrument to leave the solar system.
* by driving centerlines and using known road-construction standards to determine the location of lane boundaries and other relevant elements relative to the lane center-line, or ...
For example, dangling arcs can represent cul-de-sacs in street centerline maps. See also dangling node. dangling node The endpoint of a dangling arc not connected to another arc.
Lines- Represent the shape and location of geographic objects, such as street centerlines and streams, too narrow to depict as areas. Lines are also used to represent features that have length but no area such as contour lines and boundaries.
Pan, orbit and zoom so that you have the entire jetty in view, ans consider how you will make the centerline of your wall basically one straight line from the north side of your model, down to the end of the jetty, ...
A reference theme is required to geocode individual addresses, such as a road centerline file with address ranges. The individual address locations have historically been interpolated, or estimated, by examining address ranges along a road segment.
For example, geographic information is available at different scales (street centerline files might be available at a scale of 1:100,000; postal codes at 1:10,000; and census boundaries at 1:50,000).
2) Lines - Lines have a linear extent in the GIS database but no area. (Road centerlines, stream centerlines, sewer lines, and utility mains are represented as lines in a GIS database.) ...
For example, a measurement on a map from a water valve to the street centerline must be within a certain relative accuracy requirement to be accepted.
Figure 3. Accurately placing a GPS antenna on a combine's centerline is critical, as illustrated by an example of uncorrected (left) and corrected antenna offset (right).
Lines represent features that have a linear extent but no area dimensions. Centerlines of roads, water mains, and sewer mains are examples of line features.
Area Features ...
A set of ordered coordinates that represents the shape of geographic features too narrow to be displayed as an area at the given scale (e.g., contours, street centerlines, or streams), or linear features with no area (e.g.
In the central cylindrical (also called centrographic cylindrical) projection, vertical scale increases very fast far from the map's centerline, even faster than in Mercator's projection; likewise, poles cannot be shown in the equatorial aspect.
A section taken at right angles to the direction of a proposed centerline.
Cross-tile Topology ...
geocode: The process of identifying a location by one or more x,y coordinates from another location description such as an address. For example, an address can be matched against Volusia County's street centerline file to determine an x, ...
The horizontal coordinate system was derived from the Universal Transverse Mercator (UTM) projection for this area using a translation and 45 degree rotation to align the y axis with the centerline of Brush Creek.
We have supposed that our data will be collected for multiscale representation and there fore the RIVERS should be able to accommodate data for both centerline and polygon representations.
Since I had gone to the extra effort of grabbing the sample data (always a good idea), I selected that option. The data provided was for Cedar Point, Ohio and included the following data: orthophotos, road centerlines, addresses, and speed limits.
The red line in the top photo marks the 1990 centerline of the river's flow superimposed on the present course. One can readily note the new meanders, several small oxbow lakes, and the disappearance of several lakes.
system is used to spatially register geographic data for the same area. See Map Projection.erminous Having the same or coincident boundaries. Two adjacent polygons are coterminous when they share the same boundary (such a street centerline ...
Two adjacent polygons are coterminous when they share the same boundary (such a street centerline deviding two block).
DXF files are ASCII records of all objects in a drawing file. DXF is used by GIS systems for exchanging map files. dynamic segmentation Points along a line that vary in value, e.g. pavement thickness along a road centerline.
 See also: Information, GIS, Feature, Software, Geographic
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