基于WebGIS的气象信息显示和查询系统

WebGISX(,100089)Web,WebGISMapServerPostgreSQL,PHP,JavaappletWebGIS,,:WebGIS;;MapServerWebGISWeb(WorldWideWeb)GIS(GeographicInformationSystem)[1]Web,In2ternetWebGIS,WebGIS,[2]2008,,,Web,LDAD(),MapServerWebGIS,,PHPMapscript,[3]1MapServerWebGISMapServer(UniversityofMinnesota)WebGIS,CGI,CGIWebServerGIS,[426][7];MapScript,PHP,Perl,PythonJavaPHP,JavaAppletMapServer,MapScriptAPI;,DBF;MapFile;1.1MapFileMapFile[8].map,MapServerMapFile,,MapFile,MapServerMapFile,(keyword)END,Lengend(),Scalebar(),Layer(),Projecton(),LableObject()[9]MapFile:19120082JOURNALOFAPPLIEDMETEOROLOGICALSCIENCEVol.19,No.1February2008X2007201218,2007207227,LABELITEMshapedbf,dbf,temp,MapFile,LABELITEMtemp1.2[10],,ESRIWeather.ttfMapServer,fonts.txt,weatherESRIWeather.ttf,MapFileLABELANGLEITEM,CLASSTEXT[11]:..LABELANGLEITEMfxjdCLASSITEMCLASSCLASSEXPRESSIONawsTEXT([fxzj]),,ASCII(ã),ASCASCdbffxzj1.3[12]Shape2fileraster,Map2File,MapServerMapFile,22.1(1):,,PostgreSQLshape;(),CGIMapScript,,,,;,1Fig.1Systemstructure2.21:10(),()InternetJavaHTMLJava,,HTML2.2.1,2(),,2.2.2,2()();,()7111:WebGIS32Fig.2Thehomepageofmeteorologicaldisplayandquerysystem3Fig.3Temperaturecontourwebpageofautomaticweatherstation811192.2.3();(),(1Java1Java()Table1QueryresultsonJavamode(multi2records)/m/mmA1001116.2400E39.5400N65.00200521022809:00200521022810:00A1002116.2400E39.5700N61.00200521022809:00200521022810:00A1003116.2636E39.5552N51.00200521022809:00200521022810:00A1004116.2600E39.5600N57.00200521022809:00200521022810:00A1006116.2116E39.5659N73.00200521022809:00200521022810:00A1007116.2348E39.5855N74.00200521022809:00200521022810:00A1008116.2741E39.5832N44.00200521022809:00200521022810:00A1011116.1900E39.5400N48.00200521022809:00200521022810:00A1013116.1830E39.5633N21.00200521022809:00200521022810:00A1014116.2542E39.5419N33.00200521022809:00200521022810:00A1015200521022809:00200521022810:00A1016116.2417E39.5304N36.00200521022809:00200521022810:00A1018116.2849E39.5635N66.00200521022809:00200521022810:00A1020116.2320E39.5219N50.00200521022809:00200521022810:00A1029116.1821E39.5450N49.00200521022809:00200521022810:000.0A1030116.2540E39.5223N56.00200521022809:00200521022810:000.054433116.2900E39.5700N36.50200521022809:00200521022810:0032771200521022809:00200521022810:000.0)2.2.4()4,4Fig.4StatisticsanalysisofautomationweatherstationWebpage9111:WebGIS3Shapefile[13]ESRI,Shapefile,(.shp)(.shx)(.dbf)(.shp),(.shx)[14],(.dbf),DBF[15],Shapefile,MapServer,()DBFDBF3.1Shapefile,,,,ID(id),22Table2Stationinformationstnnchar(5)snamevarchar(50)latnumeric(7,4)lonnumeric(7,4)stntypesmallintidIDsmallintztimedatetempnumeric(7,1)humidnumeric(7,1)pressnumeric(7,1)spdnumeric(7,1)dirnumeric(7,1)prenumeric(7,1)stnn,sname,lat,lon,stntype(),id,1ztime,temp,humidpress,spddir,preShapefileDBF33Table3StationattributeidIDsmallintstnnchar(5)snamevarchar(50)latnumeric(7,4)lonnumeric(7,4)classsmallinttempnumeric(7,1)humidnumeric(7,1)pressnumeric(7,1)spdnumeric(7,1)dirnumeric(7,1)prenumeric(7,1)fxjdASCvarchar(10)id,1stnn,sname,lat,lon,class(),temp,humid,press,spddir,pre,fxjdASCII,3.22,,spddirASCII,DBF55Fig.5Flowchartofupdateattributefile021194,,,,,,,,,,,,[1],,.AcrIMSWebGIS.,2007,5(1):40242.[2],.WebGIS.,2004,25(3):40243.[3],,,.WEBGIS.,2004,15(6):7452753.[4]MagedN,KamelBoulos,HondaK.WebGISinpracticeIV:PublishingyourhealthmapsandconnectingtoremoteWMSsourecesusingtheOpenSourceUMNMapServerandDMSolu2tionMapLab.InternationalJournalofHealthGeographics,2006,5:6.[5]MitchellT.WebMappingIllustrated(UsingOpenSourceGISToolkits).Oreilly;1stedition(June2005).http:[6]RaghavanV,MasumotoS,SantitamnontPetal.DevelopmentoftrainingmaterailandinternationalizationofMapServerforpro2motingFOSS4G.Geoinformatics,2004,15(2):.[7]http:mapserver.gis.umn.edu/doc.html,2005210225.[8],,,.FLASH.,2006,8(4):1012105.[9]http:mapserver.gis.umn.edu/doc/perlmapscript2reference.html,2005210210.[10]SongGuiting,HouYijun,QiPeng.WindvectorretrievalusingdualpolarizationimageryofASAR.ProgressinNatureScience,2006,16(11):118321187.[11]http:nautilus.baruch.sc.edu/bb/viewtopic.php?t=169&start=0&postdays=0&postorder=asc&highlight,2005210222.[12],,.Surfer8.0.,2007,4(1):52257.[13],,.Shapefile.,2004,26(1):78284.[14]ESRI.ESRIShapefileTechnicalDescription.AnESRIWhitePaper.1998.[15],,,.ArcObjects.:,2005:426.1211:WebGISMeteorologicalInformationDisplayandQuerySystemBasedonWebGISLiuXulinZhaoWenfangLiuGuohong(BeijingMeteorologicalInformationCenter,Beijing100089)AbstractWiththerapiddevelopmentofdetectiontechniqueinmeteorology,moreandmorereal2timedetectiondataareobtainedinBeijingMunicipalMeteorologicalBureau,buttheintegrateddisplaysystemforallkindsofdetec2tiondataisrelativelyleftbehind.Consideringthesituation,ameteorologicalinformationdisplayandquerysys2temisdeveloped,freesoftwareMapserverandPostgreSQLareusedinthesystem.Mapserverisanopensourcedevelopmentplatformwhichmulti2formatgeographicdataaresupportedonIn2ternet.MapServerisnotafull2featuredWebGISsystem.Instead,MapServerisgoodatrenderinggeographicdatalikemaps,images,andvectorda