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Linear Feature

GIS Linear eventLinear transform

Linear features, symbols, text (except grid text), flooded area, string bog, and tundra pond patterns
Blue = CMYK (12, 3, 0, 0)
Waterbody screen ...

 


Linear feature vertices can also include m-values. Some GIS applications employ a linear measurement system used to interpolate distances along linear features, such as along roads, streams, and pipelines.

Linear features in rolling or mountainous terrains, such as long, straight valleys or ridge crests, normally stand out with a combination of bright slope-shadow effects, ...

LINEAR FEATURE
A geographic feature that can be represented by a line or set of lines. For example, rivers, roads within a pizza delivery area, and electric and telecommunication networks are all linear features.

A user-created linear feature that provides optimal directions between a starting and finishing point. Depending on the DeLorme software title being used, routes may be created on roads, trails, or using direct or point-to-point calculation.

Centerline: Linear feature representing the midpoint along a linear element like a road or stream.

Manipulation of linear features, including polygon boundaries, often creates nonlinear objects that have to be approximated with linear representations.
M a n a g e m e n t ...

Lines represent linear features, such as rivers, roads and transmission cables. Here are major roads in the Puget Sound region, along with line attributes. In ArcGIS, lines are also known as "arcs," hence the name "ArcGIS.

Centerline: A line digitized along the center of a linear feature.
Centroid: The geometric center of a polygon.

Arcs represent lines that can define linear features or the boundary of areas or polygons. In arc-node structures, there is an implied direction to the line so that it may have a left and right side.

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.

A coverage feature class used to represent linear features and polygon boundaries. One line feature can contain many arcs. Arcs are topologically linked to nodes (arc-node topology) and to polygons (polygon-arc topology).

For example, the linear feature class might include the subclass "vehicle transportation lines" with the extended data characteristic of "number of potholes.

to_along - distance to the nearest point on 'from' feature along linear feature
to_angle - angle of linear feature in nearest point, counterclockwise from positive x axis, in radians, which is between -PI and PI inclusive ...

Lines or polylines One-dimensional lines or polylines are used for linear features such as rivers, roads, railroads, trails, and topographic lines.

A GIS function for modeling linear features in highway applications such as accident analysis and pavement management. The process has the ability to compute locations of events on linear features at run time (or dynamically) in linear measure (e.g.

Thus the ability to avoid barriers may be compromised with the model erring towards longer paths for linear features with high weights. By changing the weights of different classes of linear features (like roads).

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.

Buffering is typically used with point or linear features. The generation of buffers for selected features is frequently based on a distance from that feature, or on a specific attribute of that feature.

Linear features, such as roads and rivers, can be stored as a collection of point coordinates. Polygonal features, such as sales territories and river catchments, can be stored as a closed loop of coordinates.

Lines - sets of points representing linear features e.g. roads, rivers
Areas - closed set of lines such as woodlands or a city boundary
Vector model topology is characterised by:
- Connectivity - e.g. street or pipe networks ...

Definition: A network is a set of interconnected linear features that form a pattern or framework. They are commonly used for moving resources from one location to another.

A line digitized along the center of a linear feature. 2. A line drawn from the center point of a vertical aerial photograph through the transposed center point of an overlapping aerial photograph" (Gittings & Patterson, 1999).

The process of computing the locations of events on linear features at run time based on event tables for which distance measures are available.

Each linear feature is represented as a list of ordered x, y coordinates. Attributes are associated with the feature (as opposed to a raster data structure, which associates attributes with a grid cell).

2. A coverage representing linear features containing arcs or a route-system.
3. When referring to computer hardware systems, a local area network or a wide area network.
Normalizing ...

The location in a contour line marking the intersection with a linear feature.
Browse
To be able to select and take a quick look, at part of a map or database to check for features of interest. Usually no analysis or data manipulation is involved.

A coverage feature class used to represent linear features (lines).
Attributes
Characters or numbers describing some characteristic about a spatial feature.

For example, it is widely accepted that italic type be used to identify meandering linear features such as rivers or roads. This style of type complements these features and may be either serif or sans serif.

lineation A general term applying to any linear feature in a metamorphic rock.
liquefaction The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.
lithic sandstone see graywacke.

Vector means of managing and manipulating the data are to be preferred for handling information relating to discrete points, delimited boundaries, alignment of linear features, etc.

[ESRI software] In linear referencing, a special type of hatch definition that draws hatch marks only at the low and high measure of a linear feature.

The location of a point feature, such as a well, can be described by a single x,y coordinate. Linear features, such as roads and rivers, can be stored as a collection of point coordinates.

Network - (1) A configuration of two or more computers connected so that they can share functions (i.e. applications and processes) and resources (i.e. data). (2) A system of linear features, e.g. roads, in a geographic database.
...

Topology - Topology is a mathematical procedure for explicitly defining spatial relationships. Topology expresses different types of spatial relationships as features (e.g., polygon features for areas and lines for linear features).

Linear features such as roads and streams are represented by lines. Areas such as cities, forests, wetlands, and soil units are represented by polygons. Polygons are bounded on all sides by a series of straightline segments.

A fault, line of sinkholes, straight stream stretch or a line of volcanoes can be considered linear features.
Lithification:
The processes through which sediments are converted into sedimentary rock, including compaction and cementation.

See also: Feature, Information, Map, Mapping, Area