matlab函数英文说明

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1、sin-SineofargumentinradiansThisMATLABfunctionreturnsthesineoftheelementsofX.rand-UniformlydistributedpseudorandomnumbersThisMATLABfunctionreturnsapseudorandomscalardrawnfromthestandarduniformdistributionontheopeninterval(0,1).global-DeclarevariablesasglobalThisMATLABfunctiondeclaresvar

2、iablesvar1...sqrt-SquarerootThisMATLABfunctionreturnsthesquarerootofeachelementofthearrayX.title-AddtitletocurrentaxesThisMATLABfunctionaddsthetitleconsistingofastring,str,atthetopandinthecenterofthecurrentaxes.meshgrid-Rectangulargridin2-Dand3-DspaceThisMATLABfunctionreplicatesthegrid

3、vectorsxgvandygvtoproduceafullgrid.inv-MatrixinverseThisMATLABfunctionreturnstheinverseofthesquarematrixX.inf-InfinityThisMATLABfunctionreturnstheIEEEarithmeticrepresentationforpositiveinfinity.fix-RoundtowardzeroThisMATLABfunctionroundstheelementsofAtowardzero,resultinginanarrayofinte

4、gers.ones-CreatearrayofallonesThisMATLABfunctionreturnsthescalar1.linspace-GeneratelinearlyspacedvectorThisMATLABfunctionreturnsarowvectorwith100linearlyspacedpointsintheinterval[x1,x2].sort-SortarrayelementsThisMATLABfunctionsortstheelementsofAinascendingorderalongthefirstarraydimensi

5、onwhosesizedoesnotequal1.grid-Gridlinesfor2-Dand3-DplotsThisMATLABfunctionaddsmajorgridlinestothecurrentaxes.plot-2-DlineplotThisMATLABfunctioncreatesa2-DlineplotofthedatainYversusthecorrespondingvaluesinX.IfXandYarebothvectors,thentheymusthaveequallength.surf-3-DshadedsurfaceplotThisM

6、ATLABfunctioncreatesathree-dimensionalshadedsurfacefromthezcomponentsinmatrixZ,usingx=1:nandy=1:m,where[m,n]=size(Z).ylabel-Labely-axisThisMATLABfunctionlabelsthey-axisofthecurrentaxeswiththestring,str.xlabel-Labelx-axisThisMATLABfunctionlabelsthex-axisofthecurrentaxeswiththetextspecif

7、iedbystr.function-Declarefunctionname,inputs,andoutputsThisMATLABfunctiondeclaresafunctionnamedmyfunthatacceptsinputsx1,...,xMandreturnsoutputsy1,...,yN.disp-DisplaytextorarrayThisMATLABfunctiondisplaysthecontentsofXwithoutprintingthevariablename.num2str-ConvertnumbertostringThisMATL