matlab讲义10

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1、SavingWorkspaceDirectoryManagementFormattedOutputLow-LevelI/OImportingExcelWeek10FunctionDescriptionsavesavefilenamesavefilenamevar1var2...Saveworkspacetomatlab.mat.Savetofilename.mat.Saveonlyvariablesvar1var2....loadloadfilenameloadfilenamevar1var2...Loadworkspacefrommat

2、lab.mat.Loadfromfilename.mat.Loadonlyvariablesvar1var2....SavingWorkspaceWorkspace–spaceofallvariablesSaveworkspace–noneedtorecreatethemnexttimeLoadworkspace–re-loadwhatyouhavesavedandonlywanttostoreBforlateruse.Use:>>a=rand(20,1);>>B=toeplitz(a);Supposeyouhavegenerated:>>s

3、avelastsessionBWhenwewanttousethematrixBagaininthefuture,wecanjustreloadthem:>>loadlastsessionWorkspaceWindowYoucanalsosavetheworkspacebyusing“File”then“SaveWorkspaceas..”,orhighlightingthevariablesandright-clickingthem.Ifyoucan’tfindyourworkspacewindoworotherwindows(e.g.cu

4、rrentdirectorywindow),gotothecommandwindow,click“View”andcheckthewindowyouwant.FunctionDescriptioncddirectorya=cd('directory.name')Makedirectorythecurrentdirectory.Itresultsinastringvariablea.deletefilenameDeletethefilefilenamedirdirectorydirListthefilesindirectory.Listthe

5、filesinthecurrentdirectory.pwda=pwdShowcurrentdirectory.Currentdirectoryisstoredina.DirectoryManagementCurrentdirectoryistheoneMatlablooksinfirsttogetfiles.>>cdDisplaysthecurrentdirectory.C:MATLAB6p5work>>cd..Gouponelevel.>>pwdShowcurrentdirectoryans=C:MATLAB6p5>>cdworkG

6、obackdowntothesubdirectory.>>pwdans=C:MATLAB6p5work>>dirDisplayallfilesincurrentdirectory.GenData.mWindTable.mtemp.jpg..Q1.datQ2.dattemp.dat>>dir*.datDisplayfileswith.datextension.Q1.datQ2.dattemp.dat>>dirQ*.datDisplay.datfilesstartingwithQ.Q1.datQ2.datShowcurrentdirector

7、yandfilesinthedirectory.CurrentDirectoryWindowAnotherwayofchangingdirectoriesistousethemenubar.>>pathMATLABPATHC:MATLAB6p5toolboxmatlabgeneralC:MATLAB6p5toolboxmatlabopsC:MATLAB6p5toolboxmatlablangC:MATLAB6p5toolboxmatlabelmatetc…SearchPathPathisalistofdirec

8、toriesinwhichMatlablooksforM-filesanddata.Thecurrentdirectoryisinit,plusalotofdire