北京交通大学matlab上机实验1.docx
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北京交通大学matlab上机实验1.docx
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北京交通大学matlab上机实验1
>>x=1
x=
1
>>y=2
y=
2
>>z=3
z=
3
>>who
Yourvariablesare:
xyz
>>whosx
NameSizeBytesClassAttributes
x1x18double
>>whosz
NameSizeBytesClassAttributes
z1x18double
>>clear
>>>>x=2
x=
2
>>y=5
y=
5
>>z=0
z=
0
>>whichx
xisavariable.
>>
Quit
Exit
是退出
>>cd
C:
\DocumentsandSettings\dell\MyDocuments\MATLAB
>>addpath('C:
\ProgramFiles\MATLAB\R2008a\work')
>>rmpath('C:
\ProgramFiles\MATLAB\R2008a\work')
>>
Ø>>formatlong
Ø>>pi
Ø
Øans=
Ø
Ø3.141592653589793
Ø
Ø>>eps
Ø
Øans=
Ø
Ø2.220446049250313e-016
Ø
Ø>>formatshorte
Ø>>pi
Ø
Øans=
Ø
Ø3.1416e+000
Ø
Ø>>eps
Ø
Øans=
Ø
Ø2.2204e-016
Ø
Ø>>formatlonge
Ø>>pi
Ø
Øans=
Ø
Ø3.141592653589793e+000
Ø
Ø>>eps
Ø
Øans=
Ø
Ø2.220446049250313e-016
Ø
Ø>>formatshortg
Ø>>pi
Ø
Øans=
Ø
Ø3.1416
Ø
Ø>>eps
Ø
Øans=
Ø
Ø2.2204e-016
Ø
Ø>>formatlongg
Ø>>pi
Ø
Øans=
Ø
Ø3.14159265358979
Ø
Ø>>eps
Ø
Øans=
Ø
Ø2.22044604925031e-016
Ø
Ø
Ø>>formathex
Ø>>pi
Ø
Øans=
Ø
Ø400921fb54442d18
Ø
Ø>>eps
Ø
Øans=
Ø
Ø3cb0000000000000
Ø
Ø>>formatrat
Ø>>pi
Ø
Øans=
Ø
Ø355/113
Ø
Ø>>eps
Ø
Øans=
Ø
Ø1/4503599627370496
>>copyfileD:
\121\1.txtD:
\232
>>dirD:
\232
...1.txt
>>dir
...1.txt
>>pwd
ans=
C:
\DocumentsandSettings\dell\MyDocuments\MATLAB
>>dir
...1.txt
>>deleteD:
\121\1.txt
>>mkdirD:
\234
Ø
Ø
Ø
Ø>>lookforzoom
Øzoom-Zoominandoutona2-Dplot.
Øcamzoom-Zoomcamera.
Øscopezoom-GUIinterfaceforzoomfunction
Øpanzoom-Panandzoomonmapaxes
Ømv_zoom-Mouse-basedzoomingforaxes
Øpdezoom-Zoominandoutona2-Dplot.
Øvzoom-functionvzoom('axis')
Øcreatesignalzoom-Createthezoomobjectgivenafigure
Ørender_zoombtns-RendertheZoomInandZoomOuttogglebuttons.
Ørender_zoommenus-RendertheZoomInandZoomOutmenus.
Øsetzoomstate-Functiontosetorresettheaxesstate.
Ø>>whichrguizoom
Ø'rguizoom'notfound.
Ø>>helprguizoom
Ø
Ørguizoomnotfound.
Ø
ØUsetheHelpbrowserSearchtabtosearchthedocumentation,or
Øtype"helphelp"forhelpcommandoptions,suchashelpformethods.
Ø
Ø>>what
Ø
Ø>>versignal
Ø-------------------------------------------------------------------------------------
ØMATLABVersion7.6.0.324(R2008a)
ØMATLABLicenseNumber:
161051
ØOperatingSystem:
MicrosoftWindowsXPVersion5.1(Build2600:
ServicePack3)
ØJavaVMVersion:
Java1.6.0withSunMicrosystemsInc.JavaHotSpot(TM)ClientVMmixedmode
Ø-------------------------------------------------------------------------------------
ØSignalProcessingToolboxVersion6.9(R2008a)
Ø>>phase(5+16i)
Ø
Øans=
Ø
Ø2920/2303
Ø>>magic(4)
Ø
Øans=
Ø
Ø162313
Ø511108
Ø97612
Ø414151
Ø
Ø>>magic(6)
Ø
Øans=
Ø
Ø3516261924
Ø3327212325
Ø3192222720
Ø82833171015
Ø30534121416
Ø43629131811
t=[0:
0.05:
2*pi];y=t.*sin(t*2);plot(t,y)
Ø
>>[x,y]=meshgrid(-3:
0.1:
3);
z=(x.^2+y).*exp(-x.^2-1/2*y.^2);
>>surf(x,y,z),colorbar
>>
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