arcgis提取水系步驟

1、Arcgis提取水系的步驟:0、DEM切割如果DEM太大，可以先進(jìn)行切割A(yù) 加載 DEM 圖像，ArcToolbox-總 Spatial Analyst Tods+ 盤 Conditional+ 令 Density+ 令 Distance -劃 Extraction卩 Extract by Attributes 滬 Extract by Circle P Extract by Mask 卩 Extract by Points 滬 Extr«t by Potygon Extract by Rectang!卩 Extract Values to Points 滬 SampleGenerl

2、lztior1、DEM注地填洼在Fill中填洼n10 atPolr已 zzzzzz尸zzInt-第 Hydrology> Basin 嚴(yán)FiTFlow Ac 匸umulationFlow DirectionFlow LengthSink5nap Pour PointStream LinkStream Order Stream to Feature Watershed2、水流方向提取- Hydrology 尹 Basin 護(hù)F9 ,冋ow AccumulationFlow DirectionzzzzzzzIntFlow LengthSink5nap Pour PointStream Lin

3、kStream Order stream to Feature Watersheder10latpo3、匯流累計(jì)計(jì)算-$ Hydrology 滬 Basin 廠 Fill 尸尸b円 口ixLimCfeticjri 尸 Flow Direction 嚴(yán) Flow Length 護(hù) Sink 滬 弓nap Pour Point 嚴(yán) Stream Link 廬 Stream Order 尸 Stream to Feature 卩 Watershed+ & Iri怕中alation回4、河網(wǎng)生成調(diào)出 Spatial Analyst 工具欄，選擇 raster calculator,彈出填寫計(jì)算

4、公式，然后evaluation。ValueHigh : 206716注意：800不是固定值，根據(jù) 11 ' 1里面的High值來填寫5、添加控制點(diǎn)，提取子流域在catalog中新建圖層：create new shapefill，命名為zhandian,然后在arcmap中加載該 圖層，選取站點(diǎn)加載控制點(diǎn)-每 Hydrology護(hù) Basin,Fill尹 Flow Accumulation滬 Flow DirectionFlow Length尹 Sink/* Snap Pour PointStream Link滬 Stream Order滬 Stream to Feature滬 Wate

5、rshed+ Interpolation回| NogsinrolBa刖Hydzz/z/尹zzzz-|zhandi anPour point field (optional)zJ色2JInput accumulation rasterFlowAcc.fi owlOutput rasterzl色|E:DEMsrtm_59.06SnapPou.zhan2QInput raster or feature pour point dataSnap distanceOKCancelEnvironments. IShow Help »Flow Accumulation Flow Direction

6、Flow LengthSinkSnap Pour Point Stream Link Stream Order Stream to Feature WatershedIn terpolation'mt?Input £Lcw direction raster iFlwDir filllInput raster cr feature pour point da,ta SnapF ou zhan2Four point field (optional)I VALUEMtpmt raster|E ADEM sr tft 59 0S Wai &rsh flo*Z6、根據(jù)子流域切出

7、水系Cnc&lEnvironments-.Show HelpI翊 Ar cToalbox+ 尊 3D Analyst Tcols+ Analyi s Tods+ Cartography Tools+ 尊 Cnversicn Tcols+ Dta Introprabili ty Te«+ :零| E&ta (lanagem«iit Tools+ ' Geoccding Teels* Gosttistical Anlyt T« + Linear Referencing Tools + © Multi di mensicA Tcls+

8、Nttwcrk Analyst Tt>ols+ Synpl«s'+ Server Tcls-SpatiiL Analyst Tools+Conditional+ 第 Densi ty+Di Huicg-ExtractizzzonExtractEn tr&ctEm trajetExtractE我 tractExtractEk tractAttri；buCird« Nuk Pointsty ty byLy Folygon by Rectan Values to .滬 Sample+ Gener al t z at 1 on3+CAD柵格水系轉(zhuǎn)化為矢量水系:

9、Input rasterInput ras ter or featvr eJ杜taOutput rasterC: Documents and SsttingsVAciinmistr atorLocal Se11 i ngs VTempEm tract_calc 1CancelIfi ArcToolbos+ 3D Analyst Tools+ s Tools+ 嚼| Cartogrphy Tools -Conversion ToolsTo CcvtrgeTo d£ASETotT a Sha.pafil«at*rEhflowlEnvironments. I Show Help

10、>> IFrom Kist&r 滬 Raster to 滬 Riittr to 滬 Raster <r 護(hù) Raster to 滬 Kwter toHatadataTo RasterASCIIFlotPoint F olygcii PolylifttflInp nt rastershuixiZaField (optional)RvalueOutput polylme featuresE:_shuixi22. zhpMEMMinimwi dangle lengtK (optional)10vilue (optional)Simplify polylinesTxt文件轉(zhuǎn)化

11、為柵格數(shù)據(jù)在arcgis中打開:ArcToolbax3D Analyst Iools, Analysis Tools Cartography Tools Canversi an T solsFrom RasterMetidatTo CADTo Com電rageTo ABASETo GsodatbaseTo Easier 嚴(yán) ASCH to Raster 尸 DEM t? Raster ,Feature to Raster 嚴(yán) Float to Raster 滬 Psint tc Rister A Folygan to R<st«r 尹 Polyline to faster &#

12、39;買 Kaster To Other Fom* To Shap«fil«aaaInpn七 ASCII raster fileIE： 2kmmekon-lkihtxtOutput rasterOKCancelEnviformnents.Show Help »柵格數(shù)據(jù)重采樣：1km數(shù)據(jù)重采樣成2 km數(shù)據(jù): ArcToolbox 通| 3D Analyst ToolsAnalysis Tools Cartography Tools Conversion ToolsData Interoperability Toe 總 Data Management Tools D

13、ata Compari son DatabaseDisconnected Editing Distributed Geodatb卷: DomainsFeature Class Features FieldsFile Geodatabase General Generalization+茫I* + &1+ 3 r*令 + & £ &+ &1± &由§W 軸 Indexes+ Joins* Layers and Table View: 4 & Projections and Trans: s r< §+

14、&E &E $El $總| Geocoding+Raster/ ' Add ColormtpRelationship ClassesRasterRelationship Classes SubtypesTableTopologyVersionsWorkspaceTools玄 Batch Build Pyrami g Batch Calculate St / Build Pyramids 護(hù) Build Raster Attri 護(hù) Calculate Statisti Z Clip A Composite Bands / Copy Rastw P Copy Raster

15、 Catalo P Create Ortho Corre 才 Crea tc Pair sharpen / Create Random Rast 滬 Create Raster Cata /、' Create Raster Data 滬 Delete Col or mapDelete Raster AttrDelete Raster Cata； Get Raster Propert 滬 Mosaic2 a Mosaic To New Rast / Resample滬 Workspace To Raste: 滬 Workspace To Raste:.護(hù)Input RasterASCIITomekolOutput Raster Dataset3空jIE:tomekcS. imgOut put Cell Size (optional)|0. 00631Res ampl i ng T s chi nqua (op 11 onal)| NEAREST2OKCancelEnvironnoen