GIS空间分析-网格

󰙤󰶜󰊱󰘓-󱁣󰣸󱁣󰣸󰏌󰾡󰼟󰣸󰏌󰂄󰂄󰩚󰙤󰶜󰾌󰊱󰴃󱗙󰉽󰊃󰙙󱁣󰣸󰥉󰧬󰂅󰓊󰉓󰡈󱁣󰣸󱎷󰏀󰉙󱁣󰣸󰗔󰎯󰎮󰬣󰨜󰨹󰙙󱅰󰠽󱅵󰍉󱁣󰣸󰏌󰼟󰣘󱎴󰗵󰎣󰶎󰏌󰂅󱔊󰰊󰙙󰼟󰣘󱅼󰛨󰂅󰒞󰮺󰙙󰮈󰬣󰕱󰢝󰍪󰂅󰫴󰌋󰊱󰘓󰊈󰕈󰂅󰒻󱉇󰍜󰗵󰳌󱗙󰞢󰙙󰬤󰵥(󰾅󰉺󱘎PH󰠽󰕱󰧷󰳻)󰂄󱁣󰣸󰏌󰼟󰣘󰙙󰎕󰷐󰂅󰸿󰜼󰊷(Generalization)󰂅󰌰󰌘󰾡󱅄󰙙󱋹󰤤󰗌󱁣󰣸󰣸󰏌󰙙󰨿󰍉󰠅󰥯󰂄󰗔󰏞󱁣󰣸󰣸󰏌󰨿󰍉󰉪󰯇󰞴󰎝󰂅󰎯󰥉󰧬󰼁󰙙󱙷󱁾󰎐󱁍󰬣󱁣󰣸󰰊󰊩󰂅󰊫󰢙󰋢󰣸󰏌󰠠󰠅: 󰼟󰣘󰗐󰾡󰋪?󱁣󰣸󰼆󰘓󰜓󰂄󱁣󰣸󰝊󰸿󰜼󰗌󰙙󰙤󰶜󰼟󰣘󰂅󱁣󰣸󰉽󰊃󰙙󰌌󰦐(󱁣󰣸󰰊󰊩󰵳󰊃= 󰧷󰼆󰘓󰜓)󰂅󱅂󱚤󱁚󰜓, 󰮈󰬣󰮺󰜓, 󱎷󰏀󰙤󰶜󱁣󰣸󰰊󰊩󰉓󰟧󰙙󰠠󰠅󰗌󰂄󰎯󱁣󰣸󰰊󰊩󰶜󰙙󰠽󰋢󰼰󰊱󰘓󰂅󱁣󰣸󰍀󰶲󰵗󰌅󰕑󰎍󰎝󰙙󰢭󱅺󰓻󰭕Spatial Reference󰂄Geographical Coordinate󰂅Datum󰂄Spheroid(ellipsoid)󰂅Prime-Meridian󰂄Projection Coordinate󰂅Geographical Coordinate󰂅Units󰂅ParameterSpheroid󰂄GRS67 Spheroid(Clarke 1866 Spheroid)󰚗󰌒󰵿󰁪a=6378160m󰂄󰳵󰌒󰵿󰁪b=6356774.7192m󰂄󰜯󰌻󰬟󰁪f=1/298.25󰂄Datum󰂄󱁽󱝄󰎮󰨜󰔴󰍜󰋥󰌻󰉽󰎮󰨿󰹟(Datum)󰂅TWD67(󰢭󱅺󰨿󰹟󰁪󰚉󰉿󰊆󰁤󰔴󰍜GRS67 Spheroid)󰂅TWD97(󰢭󱅺󰨿󰹟󰁪󰊫󰝁󰯅󰉞󰡈󰧛󱔳󰥧󰁤󰔴󰍜GRS80 Spheroid )󰂄GPS󱈊󰝋󰲻󰶎󰋥󰌻󰉽󰎮󰨿󰹟(Datum)󰂅WGS84 (󰢭󱅺󰨿󰹟󰁪󰎌󰬢GPS󰧛󱔳󰥧󰁤󰔴󰍜󰚐󰐧GRS80 Spheroid )Projection󰂄Traverse MercatorProjection󰂅󰂅󰂅󰂅󰂅Datum:TWD67 󰰊󰐗󰁪󰊮󰋉󰊕󰌯󰉿󰊹󱇞󰘇󰺾121󰜓󰊕󰌯󰉿󰊹󱇞󱐵󰋉󰋢󰔷0.9999󰢭󱅺󰡡󱓃󰞉󰊕󰌯󰉿󰊹󱇞󱁾󰔏󰼸󰙝󰍴󱓃󰁤󱋑󰢭󱅺󰌻󰭅250,000󰊮󰋉󰂄http://gis210.sinica.edu.tw/map_proj/lessons.htm󱁣󰣸󰰊󰊩󰠽󰂄󱋆󱅰󰗐󰤓󱓃󱅰–󰕟󰓔󱁣󰣸󰣸󰏌󰂅ESRI grid, TIF, IMG, 󰕱ER Mapper󰋕󰱪󰕇󱁇󰣸󰏌󰂅󰎯󱂭󰗼(help)󰏞󰼉󰭚󱂭󰗼󰂄󰂄󰂄󱋆󱅰(Integer): 󰊔󰮹󱚃󰙙󰼟󰣘(󰎽󰉺󰎮󰔴󰍜󰗐󰲔󰮗󱁇󱗳)󰤓󱓃󱅰(Floating point): 󰮹󱚃󰙙󰼟󰣘(󰎽󰵷󱕎󰗐󰠥󰚠󰶎)󰓚󰏞󰼟󰣘(NoData): 󰤤󰐹󰙙󰿩󱅺󰠽󰂅󱜑󰍪󰳌󰘬󰲻󰶎󰙙󱁣󰣸󰰊󰊩󰂅󱅰󰎿󰙙󱅰󰠽󰎪󰣸󰏌󰏾󰒷󱜊󱁣󰣸󰼟󰣘󰣸󰏌󰂄󰂄󰣸󰏌󰙙󰢨󰐹󰞉󰎽󰐞󰩚󱁣󰣸󰰊󰊩(cells)󱎷󰏀󰕑󱁣󰣸󱏦󰼁ArcGIS󰋕󰱪󰜘󰎵󰙙󱁣󰣸󰼟󰣘󰣸󰏌󰂅󰎵󱅵󰙙󱅂󰾅(image)󰣸󰏌(SID, IMG, TIF, 󰒻󰎵…)󰂅ESRI grid and grid stack󰂅ESRI ArcSDEraster 󰂅ESRI raster dataset󰂅ESRI raster catalog󰂄󰂄Hillshade(grid) PalmSprings.img󰎌󰯅󰍟ArcCatalog󱁍󰬣󰎌󰯅󰌙󰋸󰎯Spatial Analyst tools󰔴󰍜Elephant.gif󱅂󰾅(Image)󰣸󰏌󰂄󰂄󰂄󰂄󰣛󰩬󰏞󰎵󰡈󱏦󰣩󰂅󰔷󰎽map1.tif󰕱map1.tfw󰂅󰔴󰍜ArcCatalog󰌙󱔊󰰊󱁍󰬣󰉓󰔬󰿁󰾡󰋪󰙙󰮣󰠇󰂅󰓚󰏞󱎷󰏀󰙤󰶜󰼟󰣘,󰎽󰒳󱅂󰂅ArcGIS󰋸AUX,RRD󱏦󰔸󰱤󰘁󰌌󰦐󰉓󰔬󰿁󰎮󰬣󰙤󰶜󰼟󰣘󰙙󰮣󰠇󰂅󰏞󰱤󰔶󰊫󰜔(built-in)󰙤󰶜󰼟󰧃󰂅ERDAS IMG, Lizard Tech MrSID, GeoTIFF, 󰴃󰴃…󱏀󱐵󰸶󰠥󰐭󰊱󰘓󰮺󰜓󰂅󰔴󰍜󰎯Spatial Analyst󰛃󱃪󰎋󰼆󱏀󱐵Slope󰂄󱁣󰣸󱇍󰰖󰼁󰯰󰉽󰙙Z󰠽󱜊󰬟󰂅󰔴󰍜󱑗󰚐󰙙󱁣󰣸Z󰠽󰂅󰠇󱁑󰌈󰔉󰜓󰗐󰏵󰊱󰋢Aspect󰂄󰎯󱁣󰣸󰼁Z󰠽󰯰󰉽󰙙󰋙󰎣󱜊󰬟󰂅󰋸󱁣󰣸󰙙󰌏󰋙󰞉󰧎󰖐󰋙󰐗󰂅󰷂󰎫󰌬󰶄󰋙󰐗0󰕑360󰜓󰂅󰌻󰕾󰙙󰎮󰋙󰋸-1 󰋾󰚌Hillshade󰂄󰹫󰢛󰎮󰚌󰂅󰮣󰖛󰋄󰶢󰙙󰋙󰐗󰂅󰷂󰎫0-255󰙙󰏲󰶠󰠽󰂄󱂡󰾡󰕱󰊱󰘓󰔴󰍜Contour󰂄Isolines󰮹󰴐󰴃󰠽󰙙󰨜󰨹󰂅󰍟󰚌󱄴󰼟󰣘󰍛󰬪󰴃󰠽󱇞󰂅󰌙󰋸󰜸󰖛󰴃󰠽󱇞󰶜󰽞󰠽󰕱󰨿󱓾(󰧎󰖐)󰠽Viewshed󰂄󰍟󱝈󰿀󱓃󰗔󰎯󰐗󰻄󰠇󱁑󰌈󰌙󰋸󰞶󰔈󰗐󰊔󰦐󰞶󰔈󰙙󱁣󰣸