[edit] Buffering
Main article: GIS
Objects in space have their own impact contributed to their surrounding space.
Buffer objects by 500 meters
SELECT ST_Buffer_Meters(the_geom, 500) FROM sometable;
Buffer objects using a column of meter values ...
v.buffer input=pointsmap output=circles type=point buffer=1000
Note that attributes are not transferred (due to potential buffer overlap which cannot be resolved automatically).
Non-overlapping circles around input points with attribute transfer ...
Vegetated riparian buffer strips (RBS) represent a promising approach to impeding the delivery of non-point source (NPS) pollutants into streams, thereby protecting or enhancing water quality.
buffer
A zone of a specified distance around coverage features. Both constant- and variable-width buffers can be generated for a set of coverage features based on each feature's attribute values.
Buffer
A zone of a specified distance around features in a geographic layer. Buffers can be set at constant or variable distance based on feature attributes. The resulting buffer zones form polygonal coverages.
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Buffering: The process of creating areas of calculated distance from a feature
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buffer A zone of a specified distance around coverage features. Buffers can be constant or variable distances based on feature attributes.
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Buffer
A zone of a specified distance around a selected feature.
Buttons ...
Buffering
Buffering creates polygons which are buffered a specified distance from input points, lines, or polygons.
Buffer: Area within a specified distance (radius) around a selected map feature(s).
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Buffer
1. An area of temporary data storage.
2. Compilation of distance zones from a selected coverage feature (which may be a point, line, or polygon).
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.
BUFFER
1) A region of a specified width around a point, line, or area. it is a type of proximity analysis that is supported by most GIS and is defined in such systems by real-world distances from one or more map elements. 2) A temporary storage area ...
Buffer zone query
Locate assets or customers within specified distance
Identify addresses
Review selected features
Configuration and Administration Tools ...
buffers around objects and features are very useful GIS capabilities
e.g. build a logging buffer 500 m wide around all lakes and watercourses
buffer operations can be visualized as spreading the object spatially by a given distance ...
Buffering - The process of generating a buffer zone from a point, line or area feature by offsetting a user-defined distance from these features.
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Buffer
In GIS, a polygon generated around an existing geographic object that is often used for proximity analysis.
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Create a buffer or buffers around your schools layer
Join information about school walking distance with your sites table ...
Figure 9. Buffer zones of 100 meters are drawn around polluted stream in the water service area.
Figure 10. Buffered streams shown in figure 9 area subtracted from areas previously selected with the land use and land cover data.
Figure 7.9 Buffer operations
The following figure 7.10 shows walking distance from ICIMOD building.
Figure 7.10 Walking distances from ICIMOD ...
Google's protocol buffers encode and decode structured data in an efficient and extensible format. Google uses Protocol Buffers for almost all of its internal RPC protocols and file formats.
Using the buffer function in the GIS, a half-mile zone was drawn around the water company service area. [LINK] This buffer zone was the "window" used to view and combine the various map coverages relevant to the well site selection.
Dissolve Barriers - An option in the buffer wizard to treat a soon to be created buffer as either one object or several
Feature - A digital representation of something in the real world.
buffer p. 142 a zone constructed outwards from an isolated object to a specific distance. C
CAD p. 31 computer-aided design, software packages designed to automate drafting of mechanical drawings. cadastral p.
Often "…between two points" must be expanded to "…among set of points" to account for proximity, such as buffers around streams.
Perform proximity analysis including Buffer, Near, and Point Distance.
Perform surface analysis including Aspect, Hillshade, and Slope.
Perform raster processing and conversion.
Get the coordinates for the quad box and add a 100-meter buffer
Use the coordinates with the generate command to generate a polygon coverage
Calculate which quads will be needed ...
Point features may be sufficient for small communities, in which case a circular buffer is generated to create an area for the feature.
The solid contours are graduated buffers around the on-ramps at intervals of 1,467 feet in this picture. (Your intervals will be different unless you chanced to use exactly the same analysis extent.
A common type of proximity analysis is the buffer zone. Coverage can be quit complicated involving many layers and mathmaticaly complex such as the decreasing sound levels due to the inverse proportion law of noise generated by various types of air ...
[data conversion] A method of data conversion in which data is encoded as a sequence, stored in a file, memory buffer, or other medium, and transmitted across a network connection.
Buffering is the creation of a polygon around some existing entity or group of entities. The creation of a polygon that represents the area within ten kilometers of a hazardous materials transportation route is an example.
- Extract (clip, select, split), Overlay (erase, identify, intersect, union, update), Proximity (buffer, near, point distance, thiessen polygon)
Raster analysis ...
To answer such questions, GIS technology uses a process called buffering to determine the proximity relationship between features.
Overlay Analysis: ...
i) When concerned with shape of features, spatial accuracy of features within an area (including direction or distance), or with analyses involving geometric constructs (e.g. buffers defined around points, lines or areas; ...
The atmosphere acts as a buffer between Earth and the Sun. The layers, troposphere, stratosphere, mesosphere, thermosphere, and the exosphere, vary around the globe and in response to seasonal changes.
In GIS, there are four traditional types of spatial analysis: spatial overlay and contiguity analysis, surface analysis, linear analysis, and raster analysis. It includes such GIS functions as topological overlay, buffer generation, ...
Common components of GIS analysis include database query and selection, database linking, buffering, topological overlay, clipping, dissolving, etc. This work is mainly done by GIS processing software.
Perform address matching and geocoding
Track real-time events with the Global Positioning System (GPS)
Customize thematic maps and pop-up menus
Buffer zone creation
Generate reports from relational databases ...
Operating at 100 Base-T line speed with deep time-stamp packet buffers, the XLi IEEE 1588 Grandmaster supports more than 50 slave delay requests per second.
1:50,000 topo maps), modern roads (from the three 1:50,000 topo maps), ancient roads (from project information and old maps), known Celtic hillforts (from project information and old maps) data layers showing different distance categories, or buffer ...
 See also: GIS, Information, Analysis, Map, Feature
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