descripcion de un clutter class
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GGEEOOGGRR A APPHHIICC
DD A ATT A ABB A ASSEE Project Information
Area of Interest:
ARGENTINA: Bahia
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Satellite Imagery used (ASTER): 003_2018527476_09 th November 2003
Project Parameters:Datum: WGS84 (GRS-1980)
Projection: South UTM 20 (zone H)Central Meridian: 63° West
CoverageThis geographic product covers a 20km x 20km area of Bahia in Argentina.
38° 37' 17" SGeographic bounds: 62° 22' 54" W 62° 09' 12" W(SW corner to NE corner) 38° 48' 11" S
5 724 900m Northing
UTM bounds: 553 700m Easting 573 700m Easting5 704 900m Northing
Argent ina: Bahia General Information
Private Bag X20 Constantia 7848Block C, The TerracesSteenberg Office Park
Westlake, 7945Cape Town South AfricaTel +27 (0)21 700 8140Fax+27 (0)21 701 9520
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Package contentThe delivery contains four (4) dataset layers and a *.pdf document. The data wasprocessed on the 08th October 2008.
• A 20 meter resolution Digital Terrain Model (DTM).
• A 10 meter resolution ortho image.
• A 20 meter resolution Land-Use Raster (morphology).• A vector network.
• A Bahia.pdf document containing the project information (this document).
Digital Terrain ModelFormatThe Digital Terrain Model is provided in an Atoll (Planet: “file”) (2bytes, signed) format.
Image informationNumber of Columns (DIM_X) 1000 pixels
Number of Rows (DIM_Y) 1000 pixelsNorthwest corner (553700m E, 5724900m N) metersSoutheast corner (573700m E, 5704900m N) metersZ value unit: metersPixel size (resolution): 20 metersPlanimetric accuracy: 20 metersVertical accuracy: 5 - 10 meters
Al timetric InformationThe altitudes range between 0 meters and 100 meters, with an average altitude of
approximately 32 meters.
Ortho-imageFormatThe Ortho image is provided in an Atoll (Planet: *.tif) format (RGB, unsigned), and derivedfrom the ASTER satellite imagery.
File Content
Number of Columns (DIM_X) 2000 pixelsNumber of Rows (DIM_Y) 2000 pixelsNorthwest corner (553700m E, 5724900m N) metersSoutheast corner (573700m E, 5704900m N) meters Pixel size (resolution): 10 metersPlanimetric accuracy: 20 meters
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MorphologyFormatThe morphology is provided in an Atoll (Planet: “file”) format (2byte, signed) and derivedfrom the ASTER satellite imagery.
Image information
Number of Columns (DIM_X) 1000 pixelsNumber of Rows (DIM_Y) 1000 pixelsNorthwest corner (553700m E, 5724900m N) metersSoutheast corner (573700m E, 5704900m N) metersPixel size (resolution): 20 metersPlanimetric accuracy: 20 metersMeaning of the pixel valuesThe values relate to each pixel stored in the image and corresponds to a coderepresenting the land-use type (class). A correspondence table between codes,description and definition is provided. Below are the 18 classes:
Code Descript ion Definition%
cover
Building
Heights
Image sample 1 Image sample 2
1 sea Areas of coastal water,including oceans, bays andestuaries.
3.81 % 0m
2 inland water
Areas of permanent openwater. Including natural andman-made bodies, which areeither static or flowing (rivers,
dams (i.e. reservoirs),permanent pans and lakes)
0.42 % 0m
3 wetland
Areas of open or vegetatedland that is periodicallyinundated with water orcovered with shallow standingwater.
0.00 % 0m
4 barren Areas that contain novegetation.
11.53 % 0m
5grass/agriculture
Agricultural fields typicallycharacterized by theirgeometric shape and used forthe production of annual crops(orchards, vineyards, livestockgrazing and hay crops etc).Includes actively tilled land,undeveloped lots, parks and
golf courses.
56.79 % 0m
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Code Descript ion Definition%
coverBuildingHeights
Image sample 1 Image sample 2
6 rangelandScattered low scrub vegetationand areas of mixed grassland.
8.23 % 0-2m
7 woodland
None-continuous, mixeddensity (30% -60% canopycover), with young trees ortrees that are generally lessthan five (5) meters.
2.67 % < 5m
8 forest
Continuous cover of plantation
and/or native tree species withan average height generallygreater than five (5) meters.
5.29 % > 5m
9 villageSmall built-up areas withinrural setting that includesuburban and urban classes.
0.92 % 3-8m
10 suburban
Areas of residential settlementmainly single (1) story houses,medium tree cover (
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Code Descript ion Definition%
coverBuildingHeights
Image sample 1 Image sample 2
14 core urban
Areas within the urbanperimeter; dense urban withbuilt-up features generallyindistinct from each other;heights of buildings above forty(40) meters. Includes single orsmall isolated clusters of highbuildings.
0.04 % > 40m
15buildingblocks
Groups of generally narrowbuildings that may be paralleland separated by open space;(mostly apartment or officeblocks).
0.01 % 20-40m
16 industrial
Industrial / commercial /institutional areas includingbuildings with large footprints.Heights generally below twenty(20) meters and separated bystreets wider than twenty (20)meters.
1.56 % < 20m
17 airportLanding strips and runwaysurfaces.
0.06 % 0m
18 open in urban
Areas with little or novegetation (paved areas)within the urban footprint,including transportationcorridors.
0.02 % 0m
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VectorsFormatThe vector files are provided in an Atoll (Planet: *.asc) format, with nine (9) individualfeature files being supplied.
Origin and accuracyThe vector data was digitised from the ASTER satellite imagery.Planimetric accuracy: 20 meters.
Vector Features capturedBelow are the features classes contained in the vector files:1 coastline2 highway
3 inland water4 major street5 railway6 runway7 secondary road8 single river9 street