significantfigure

【Matlab中如何只把figure中的图像区域保存为图片文件】

似乎很难该的哦。如果你真的很想那样的话，建议使用屏幕截图工具。

Vista系统的话有自带的截图工具。

QQ上面也有截图工具，如果有运行QQ程序的话，按下

【Alt】＋【Ctrl】＋【A】就可以截图了，想怎么截就怎么截。

这个函数你看看不是是可以

>>helpimwrite

IMWRITEWriteimagetographicsfile.

IMWRITE(A,FILENAME,FMT)writestheimageAtothefilespecifiedby

FILENAMEintheformatspecifiedbyFMT.

AcanbeanM-by-N(grayscaleimage)orM-by-N-by-3(colorimage)

array.Acannotbeanemptyarray.IftheformatspecifiedisTIFF,

IMWRITEcanalsoacceptanM-by-N-by-4arraycontainingcolordata

thatusestheCMYKcolorspace.

FILENAMEisastringthatspecifiesthenameofthefile.

FMTisastringspecifyingtheformatofthefile.Seethereference

page,ortheoutputoftheIMFORMATSfunction,foralistof

supportedformats.

IMWRITE(X,MAP,FILENAME,FMT)writestheindexedimageinXandits

associatedcolormapMAPtoFILENAMEintheformatspecifiedbyFMT.

IfXisofclassuint8oruint16,IMWRITEwritestheactualvaluesin

thearraytothefile.IfXisofclassdouble,IMWRITEoffsetsthe

valuesinthearraybeforewriting,usinguint8(X-1).MAPmustbea

validMATLABcolormap.Notethatmostimagefileformatsdonot

supportcolormapswithmorethan256entries.

IMWRITE(...,FILENAME)writestheimagetoFILENAME,inferringthe

formattousefromthefilename'sextension.Theextensionmustbe

oneofthelegalvaluesforFMT.

IMWRITE(...,PARAM1,VAL1,PARAM2,VAL2,...)specifiesparametersthat

controlvariouscharacteristicsoftheoutputfile.Parametersare

currentlysupportedforHDF,JPEG,TIFF,PNG,PBM,PGM,andPPMfiles.

ClassSupport

-------------

TheinputarrayAcanbeofclasslogical,uint8,uint16,ordouble.

Indexedimages(X)canbeofclassuint8,uint16,ordouble;the

associatedcolormap,MAP,mustbedouble.

Theclassoftheimagewrittentothefiledependsontheformat

specified.Formostformats,iftheinputarrayisofclassuint8,

IMWRITEoutputsthedataas8-bitvalues.Iftheinputarrayisof

classuint16andtheformatsupports16-bitdata(JPEG,PNG,and

TIFF),IMWRITEoutputsthedataas16-bitvalues.Iftheformatdoes

notsupport16-bitvalues,IMWRITEissuesanerror.Severalformats,

suchasJPEGandPNG,supportaparameterthatletsyouspecifythe

bitdepthoftheoutputdata.

Iftheinputarrayisofclassdouble,andtheimageisagrayscale

orRGBcolorimage,IMWRITEassumesthedynamicrangeis[0,1]and

automaticallyscalesthedataby255beforewritingittothefileas

8-bitvalues.

Iftheinputarrayisofclassdouble,andtheimageisanindexed

image,IMWRITEconvertstheindicestozero-basedindicesby

subtracting1fromeachelement,andthenwritesthedataasuint8.

Iftheinputarrayisofclasslogical,IMWRITEassumesthedataisa

binaryimageandwritesittothefilewithabitdepthof1,ifthe

formatallowsit.BMP,PNG,orTIFFformatsacceptbinaryimagesas

inputarrays.

HDF-specificparameters

-----------------------

'Compression'Oneofthesestrings:'none'(thedefault),

'rle'(onlyvalidforgrayscaleandindexed

images),'jpeg'(onlyvalidforgrayscale

andRGBimages)

'Quality'Anumberbetween0and100;parameterapplies

onlyif'Compression'is'jpeg';higher

numbersmeanqualityisbetter(lessimage

degradationduetocompression),butthe

resultingfilesizeislarger

'WriteMode'Oneofthesestrings:'overwrite'(the

default)or'append'

JPEG-specificparameters

------------------------

'Quality'Anumberbetween0and100;highernumbers

meanqualityisbetter(lessimagedegradation

duetocompression),buttheresultingfile

sizeislarger

'Comment'Acolumnvectorcellarrayofstringsora

charmatrix.Eachrowofinputiswrittenout

asacommentintheJPEGfile.

'Mode'Either'lossy'(thedefault)or'lossless'

'BitDepth'Ascalarvalueindicatingdesiredbitdepth;

forgrayscaleimagesthiscanbe8,12,or16;

fortruecolorimagesthiscanbe8or12

TIFF-specificparameters

------------------------

'Colorspace'Oneofthesestrings:'rgb','cielab',or

'icclab'.Thedefaultvalueis'rgb'.This

parameterisusedonlywhentheinputarray,

A,isM-by-N-by-3.Seethereferencepage

formoredetailsaboutcreatingL*a*b*TIFF

files.

'Compression'Oneofthesestrings:'none','packbits'

(defaultfornonbinaryimages),'ccitt'

(defaultforbinaryimages),'fax3','fax4';

'ccitt','fax3',and'fax4'arevalidfor

binaryimagesonly

'Description'Anystring;fillsintheImageDescription

fieldreturnedbyIMFINFO

'Resolution'Atwo-elementvectorcontainingthe

XResolutionandYResolution,orascalar

indicatingbothresolutions;thedefaultvalue

is72

'WriteMode'Oneofthesestrings:'overwrite'(the

default)or'append'

PNG-specificparameters

-----------------------

'Author'Astring

'Description'Astring

'Copyright'Astring

'CreationTime'Astring

'Software'Astring

'Disclaimer'Astring

'Warning'Astring

'Source'Astring

'Comment'Astring

'InterlaceType'Either'none'or'adam7'

'BitDepth'Ascalarvalueindicatingdesiredbitdepth;

forgrayscaleimagesthiscanbe1,2,4,

8,or16;forgrayscaleimageswithan

alphachannelthiscanbe8or16;for

indexedimagesthiscanbe1,2,4,or8;

fortruecolorimageswithorwithoutan

alphachannelthiscanbe8or16

'Transparency'Thisvalueisusedtoindicatetransparency

informationwhennoalphachannelisused.

Forindexedimages:aQ-elementvectorin

therange[0,1];Qisnolargerthanthe

colormaplength;eachvalueindicatesthe

transparencyassociatedwiththe

correspondingcolormapentry

Forgrayscaleimages:ascalarintherange

[0,1];thevalueindicatesthegrayscale

colortobeconsideredtransparent

Fortruecolorimages:a3-elementvectorin

therange[0,1];thevalueindicatesthe

truecolorcolortobeconsidered

transparent

Youcannotspecify'Transparency'and

'Alpha'atthesametime.

'Background'Thevaluespecifiesbackgroundcolortobe

usedwhencompositingtransparentpixels.

Forindexedimages:anintegerintherange

[1,P],wherePisthecolormaplength

Forgrayscaleimages:ascalarintherange

[0,1]

Fortruecolorimages:a3-elementvectorin

therange[0,1]

'Gamma'Anonnegativescalarindicatingthefile

gamma

'Chromaticities'An8-elementvector[wxwyrxrygxgybx

by]thatspecifiesthereferencewhite

pointandtheprimarychromaticities

'XResolution'Ascalarindicatingthenumberof

pixels/unitinthehorizontaldirection

'YResolution'Ascalarindicatingthenumberof

pixels/unitintheverticaldirection

'ResolutionUnit'Either'unknown'or'meter'

'Alpha'Amatrixspecifyingthetransparencyof

eachpixelindividually;therowandcolumn

dimensionsmustbethesameasthedata

array;maybeuint8,uint16,ordouble,in

whichcasethevaluesshouldbeinthe

range[0,1]

'SignificantBits'Ascalarorvectorindicatinghowmany

bitsinthedataarrayshouldberegarded

assignificant;valuesmustbeintherange

[1,bitdepth]

Forindexedimages:a3-elementvector

Forgrayscaleimages:ascalar

Forgrayscaleimageswithanalphachannel:

a2-elementvector

Fortruecolorimages:a3-elementvector

Fortruecolorimageswithanalphachannel:

a4-elementvector

InadditiontothesePNGparameters,youcanuseany

parameternamethatsatisfiesthePNGspecificationfor

keywords:onlyprintablecharacters,80charactersor

fewer,andnoleadingortrailingspaces.Thevalue

correspondingtotheseuser-specifiedparametersmustbea

stringthatcontainsnocontrolcharactersexceptfor

linefeed.

RAS-specificparameters

-----------------------

'Type'Oneofthesestrings:'standard'

(uncompressed,b-g-rcolororderwith

truecolorimages),'rgb'(like'standard',

butusesr-g-bcolororderfortruecolor

images),'rle'(run-lengthencodingof1-bit

and8-bitimages)

'Alpha'Amatrixspecifyingthetransparencyofeach

pixelindividually;therowandcolumn

dimensionsmustbethesameasthedata

array;maybeuint8,uint16,ordouble.May

onlybeusedwithtruecolorimages.

PBM,PGM,andPPM-specificparameters

------------------------

'Encoding'Oneofthesestrings:'ASCII'forplainencoding

or'rawbits'forbinaryencoding.Defaultis'rawbits'.

'MaxValue'Ascalarindicatingthemaximumgrayorcolor

value.AvailableonlyforPGMandPPMfiles.

ForPBMfiles,thisvalueisalways1.Default

is65535ifimagearrayis'uint16'and255otherwise.

Table:summaryofsupportedimagetypes

---------------------------------------

BMP1-bit,8-bitand24-bituncompressedimages

TIFFBaselineTIFFimages,including1-bit,8-bit,16-bit,

and24-bituncompressedimages;1-bit,8-bit,16-bit,

and24-bitimageswithpackbitscompression;1-bit

imageswithCCITT1D,Group3,andGroup4compression;

CIELAB,ICCLAB,andCMYKimages

JPEGBaselineJPEGimages

PNG1-bit,2-bit,4-bit,8-bit,and16-bitgrayscale

images;8-bitand16-bitgrayscaleimageswithalpha

channels;1-bit,2-bit,4-bit,and8-bitindexed

images;24-bitand48-bittruecolorimages;24-bit

and48-bittruecolorimageswithalphachannels

HDF8-bitrasterimagedatasets,withorwithoutassociated

colormap;24-bitrasterimagedatasets;uncompressedor

withRLEorJPEGcompression

PCX8-bitimages

XWD8-bitZPixmaps

RASAnyRASimage,including1-bitbitmap,8-bitindexed,

24-bittruecolorand32-bittruecolorwithalpha.

PBMAny1-bitPBMimage,ASCII(plain)orraw(binary)encoding.

PGMAnystandardPGMimage.ASCII(plain)encodedwith

arbitrarycolordepth.Raw(binary)encodedwithup

to16bitspergrayvalue.

PPMAnystandardPPMimage.ASCII(plain)encodedwith

arbitrarycolordepth.Raw(binary)encodedwithup

to16bitspercolorcomponent.

PNMAnyofPPM/PGM/PBM(seeabove)chosenautomatically.

Seealsoimfinfo,imread,imformats,fwrite,getframe.

ReferencepageinHelpbrowser

docimwrite

>>

【virginiawoolf的个人简介（英文）】

【生平】

AdelineVirginiaWoolf(néeStephen;25January1882–28March1941)wasanEnglishwriterandoneoftheforemostmodernistsofthetwentiethcentury.

Duringtheinterwarperiod,WoolfwasasignificantfigureinLondonliterarysocietyandacentralfigureintheinfluentialBloomsburyGroupofintellectuals.HermostfamousworksincludethenovelsMrsDalloway(1925),TotheLighthouse(1927)andOrlando(1928),andthebook-lengthessayARoomofOne'sOwn(1929),withitsfamousdictum,"Awomanmusthavemoneyandaroomofherownifsheistowritefiction."

Woolfsufferedfromsevereboutsofmentalillnessthroughoutherlife,thoughttohavebeentheresultofwhatisnowtermedbipolardisorder,andcommittedsuicidebydrowningin1941attheageof59.

【作品及影响】

Woolfbeganwritingprofessionallyin1900,initiallyfortheTimesLiterarySupplementwithajournalisticpieceaboutHaworth,homeoftheBront?family.Herfirstnovel,TheVoyageOut,waspublishedin1915byherhalf-brother'simprint,GeraldDuckworthandCompanyLtd.ThisnovelwasoriginallytitledMelymbrosia,butWoolfrepeatedlychangedthedraft.AnearlierversionofTheVoyageOuthasbeenreconstructedbyWoolfscholarLouiseDeSalvoandisnowavailabletothepublicundertheintendedtitle.DeSalvoarguesthatmanyofthechangesWoolfmadeinthetextwereinresponsetochangesinherownlife.

LyttonStracheyandWoolfatGarsington,1923Woolfwentontopublishnovelsandessaysasapublicintellectualtobothcriticalandpopularsuccess.Muchofherworkwasself-publishedthroughtheHogarthPress.Sheisseenasamajortwentieth-centurynovelistandoneoftheforemostmodernists.

WoolfisconsideredamajorinnovatorintheEnglishlanguage.Inherworkssheexperimentedwithstreamofconsciousnessandtheunderlyingpsychologicalaswellasemotionalmotivesofcharacters.Woolf'sreputationdeclinedsharplyafterWorldWarII,butherimportancewasre-establishedwiththegrowthoffeministcriticisminthe1970s.

VirginiaWoolf'speculiaritiesasafictionwriterhavetendedtoobscurehercentralstrength:sheisarguablythemajorlyricalnovelistintheEnglishlanguage.Hernovelsarehighlyexperimental:anarrative,frequentlyuneventfulandcommonplace,isrefracted—andsometimesalmostdissolved—inthecharacters'receptiveconsciousness.Intenselyricismandstylisticvirtuosityfusetocreateaworldoverabundantwithauditoryandvisualimpressions.WoolfhasoftenbeencreditedwithstreamofconsciousnesswritingalongsidehermodernistcontemporarieslikeJamesJoyceandJosephConrad.

TheintensityofVirginiaWoolf'spoeticvisionelevatestheordinary,sometimesbanalsettings—oftenwartimeenvironments—ofmostofhernovels.Forexample,MrsDalloway(1925)centresontheeffortsofClarissaDalloway,amiddle-agedsocietywoman,toorganiseaparty,evenasherlifeisparalleledwiththatofSeptimusWarrenSmith,aworking-classveteranwhohasreturnedfromtheFirstWorldWarbearingdeeppsychologicalscars.

TotheLighthouse(1927)issetontwodaystenyearsapart.TheplotcentresontheRamsayfamily'santicipationofandreflectionuponavisittoalighthouseandtheconnectedfamilialtensions.OneoftheprimarythemesofthenovelisthestruggleinthecreativeprocessthatbesetpainterLilyBriscoewhileshestrugglestopaintinthemidstofthefamilydrama.Thenovelisalsoameditationuponthelivesofanation'sinhabitantsinthemidstofwar,andofthepeopleleftbehind.Italsoexploresthepassageoftime,andhowwomenareforcedbysocietytoallowmentotakeemotionalstrengthfromthem.

Orlando(1928)isoneofVirginiaWoolf'slightestnovels.Aparodicbiographyofayoungnoblemanwholivesforthreecenturieswithoutageingmuchpastthirty(butwhodoesabruptlyturnintoawoman),thebookisinpartaportraitofWoolf'sloverVitaSackville-West.ItwasmeanttoconsoleVitaforthelossofherancestralhome,thoughitisalsoasatiricaltreatmentofVitaandherwork.InOrlando,thetechniquesofhistoricalbiographersarebeingridiculed;thecharacterofapompousbiographerisbeingassumedinorderforittobemocked.

TheWaves(1931)presentsagroupofsixfriendswhosereflections,whichareclosertorecitativesthantointeriormonologuesproper,createawave-likeatmospherethatismoreakintoaprosepoemthantoaplot-centrednovel.

Flush:ABiography(1933)isapart-fiction,part-biographyofthecockerspanielownedbyVictorianpoetElizabethBarrettBrowning.Thebookiswrittenfromthedog'spointofview.WoolfwasinspiredtowritethisbookfromthesuccessoftheRudolfBesierplayTheBarrettsofWimpoleStreet.Intheplay,Flushisonstageformuchoftheaction.Theplaywasproducedforthefirsttimein1932bytheactressKatharineCornell.

Herlastwork,BetweentheActs(1941),sumsupandmagnifiesWoolf'schiefpreoccupations:thetransformationoflifethroughart,sexualambivalence,andmeditationonthethemesoffluxoftimeandlife,presentedsimultaneouslyascorrosionandrejuvenation—allsetinahighlyimaginativeandsymbolicnarrativeencompassingalmostallofEnglishhistory.Thisbookisthemostlyricalofallherworks,notonlyinfeelingbutinstyle,beingchieflywritteninverse.WhileWoolf'sworkcanbeunderstoodasconsistentlyindialoguewithBloomsbury,particularlyitstendency(informedbyG.E.Moore,amongothers)towardsdoctrinairerationalism,itisnotasimplerecapitulationofthecoterie'sideals.

Woolf'sworkshavebeentranslatedintoover50languagesbywriterssuchasJorgeLuisBorgesandMargueriteYourcenar.

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