ENVI绘图功能介绍

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1、ENVITutorial:IntroductiontoENVIPlotFunctionsTableofContentsOVERVIEWOFTHISTUTORIAL.....................................................................................................................................2ENVIPLOTFUNCTIONS....................................................

2、.........................................................................................3CreateaPlotFunction.......................................................................................................................................3AddthePlotFunctiontotheMenu............

3、..........................................................................................................4SetupENVItoRunthePlotFunction..................................................................................................................5OpenaSpectralLibraryandPlotSpectr

4、a.............................................................................................................5Tutorial:IntroductiontoENVIPlotFunctionsOverviewofThisTutorialThistutorialdescribeshowtoimplementanENVIplotfunction,whichisauser-definedfunctionthatyoucanaddtoandcallfromthe

5、Plot_FunctionmenuofanyENVIplotwindow.ThistutorialassumesthatyouarefamiliarwiththeInteractiveDataLanguage(IDL)andthatyouunderstandhowtowritefunctionsandproceduresinIDL.ENVI+IDLisrequiredforthistutorial.FilesUsedinThisTutorial:CD-ROM:TutorialDataCD#1RequiredFiles(envidatauser_fun)File

6、Descriptionpf_1st_derivative.proPlotfunctiontotakethefirstderivativeofaspectrumpf_2nd_derivative.proPlotfunctiontotakethesecondderivativeofaspectrumuseradd.txtModified(replacement)versionofuseradd.txt,whichresidesinthemenudirectoryofyourENVIinstallationRequiredFiles(envidataspec_lib

7、)FileDescriptionusgs_min.sli(.hdr)USGSmineralspectrallibrary2ENVITutorial:IntroductiontoENVIPlotFunctionsTutorial:IntroductiontoENVIPlotFunctionsENVIPlotFunctionsPlotfunctionsareaspecialclassofENVIuserfunctionsthatmodifydatainanENVIplotwindow,suchasaZProfilewindow.Forexample,ENVI’sbu

8、ilt-inplotfu