MATLAB Function Reference (Volume 2: Graphics)

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educepatchPurpose2reducepatchReduce the number of patch facesSyntaxDescriptionreducepatch(p,r)nfv = reducepatch(p,r)nfv = reducepatch(fv,r)nfv = reducepatch(f,v,r)[nf,nv] = reducepatch(...)reducepatch(p,r) reduces the number of faces of the patch identified byhandle p, while attempting to preserve the overall shape of the original object.MATLAB interprets the reduction factor r in one of two ways depending on itsvalue:• If r is less than 1, r is interpreted as a fraction of the original number of faces.For example, if you specify r as 0.2, then the number of faces is reduced to20% of the number in the original patch.• If r is greater than or equal to 1, then r is the target number of faces. Forexample, if you specify r as 400, then the number of faces is reduced untilthere are 400 faces remaining.nfv = reducepatch(p,r) returns the reduced set of faces and vertices but doesnot set the Faces and Vertices properties of patch p. The struct nfv containsthe faces and vertices after reduction.nfv = reducepatch(fv,r) performs the reduction on the faces and vertices inthe struct fv.nfv = reducepatch(p) or nfv = reducepatch(fv) uses a reduction value of0.5.nfv = reducepatch(f,v,r) performs the reduction on the faces in f and thevertices in v.[nf,nv] = reducepatch(...) returns the faces and vertices in the arrays nfand nv.RemarksIf the patch contains nonshared vertices, MATLAB computes shared verticesbefore reducing the number of faces. If the faces of the patch are not triangles,MATLAB triangulates the faces before reduction. The faces returned arealways defined as triangles.2-400
educepatchThe number of output triangles may not be exactly the number specified withthe reduction factor argument (r), particularly if the faces of the original patchare not triangles.Examples This example illustrates the effect of reducing the number of faces to only 15%of the original value.[x,y,z,v] = flow;p = patch(isosurface(x,y,z,v,-3));set(p,'facecolor','w','EdgeColor','b');daspect([1,1,1])view(3)figure;h = axes;p2 = copyobj(p,h);reducepatch(p2,0.15)daspect([1,1,1])view(3)Before Reduction3210−1−2−3420−2−402468102-401
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MATLAB®The Language of Technical C
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Contents1Command SummaryGeneral Pur
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1Command SummaryThis chapter lists
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Controlling the Command Windowclcec
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evalinfevalfunctionglobalnargchkper
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InfInfinityinputname Input argument
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ealremroundsec, sechsignsin, sinhsq
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funmlogmsqrtmEvaluate functions of
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Polynomial and Interpolation Functi
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Sparse Systems of Linear Equationsb
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hex2dechex2numIEEE hexadecimal to d
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Multidimensional Array Functionscat
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stream3streamlinesurf2patchsubvolum
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colormapgraymonhsv2rgbrgb2hsvrgbplo
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Interactive User Inputginput Graphi
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2ReferenceThis chapter describes al
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areaExamplesPlot the values in Y as
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axesWhile the basic purpose of an a
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axesIn this example, the first plot
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axesProperty Name Property Descript
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Axes Propertiesgraphics object disp
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Axes PropertiesCameraViewAngleCamer
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Axes PropertiesCurrentPoint 2-by-3
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Axes Propertiesautomatically sets t
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Axes Propertiessetting the XLabel,
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Axes Propertiessets LineStyleOrder
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Axes Propertiesaxes are made as lar
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Axes PropertiesTypestring (read onl
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Axes PropertiesXLabel, YLabel, ZLab
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axisPurpose2axisAxis scaling and ap
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axisaxis normal automatically adjus
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axisThe right figure shows a more s
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ar, barhPurpose2bar, barhBar chartS
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ar, barhExamplesPlot a bell shaped
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ar3, bar3hPurpose2bar3, bar3hThree-
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ar3, bar3hsubplot(3,2,4)bar3(Y,0.5,
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oxPurpose2boxControl axes borderSyn
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camdollyPurpose2camdollyMove the ca
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camlightPurpose2camlightCreate or m
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camlookatPurpose2camlookatPosition
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camorbitPurpose2camorbitRotate the
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campanPurpose2campanRotate the came
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camposSee Alsoaxis, camproj, camtar
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camrollPurpose2camrollRotate the ca
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camtargetExamplesThis example moves
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camupSee Alsoaxis, camproj, campos,
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camvaSetting a camera view angle or
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capturePurpose2captureis obsolete i
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caxismap them to an entry in the co
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caxisThe blue color of the ocean is
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clabelPurpose2clabelContour plot el
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clfPurpose2clfClear current figure
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closemust specify the hidden option
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colorbarExamplesDisplay a colorbar
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colormapPurpose2colormapSet and get
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colormapExamplesThe images and colo
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ColorSpecPurpose2ColorSpecspecifica
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cometPurpose2cometTwo-dimensional c
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compassPurpose2compassPlot arrows e
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coneplotPurpose2coneplotPlot veloci
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coneplot• Draw the cones, setting
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coneplotSee Alsoisosurface, patch,
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contourRemarksExamplesIf you do not
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contour4512104010358830810258201510
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contour3RemarksExamplesIf you do no
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contourccontours using a regularly
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contourfExamplesCreate a filled con
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contoursliceExamplesThis example us
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contrastPurpose2contrastGrayscale c
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copyobjExamplesCopy a surface to a
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cylinderExamplesCreate a cylinder w
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daspectPurpose2daspectSet or query
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daspectSetting the data aspect rati
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datetickDateform Format Example12 m
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default4Purpose2default4MATLAB Vers
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dragrectPurpose2dragrectDrag rectan
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errorbarPurpose2errorbarPlot error
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errordlgPurpose2errordlgCreate and
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ezcontourPurpose2ezcontourEasy to u
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ezcontourSee Alsocontour, ezcontour
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ezcontourff( x,y) 31 ( - x) 2 e- x2
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ezmeshPurpose2ezmeshEasy to use 3-D
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ezmeshSee Alsoezcontour, ezcontourf
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ezmeshcArray multiplication, divisi
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ezplotPurpose2ezplotEasy to use fun
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ezplot3Purpose2ezplot3Easy to use 3
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ezpolarPurpose2ezpolarEasy to use p
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ezsurfArray multiplication, divisio
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ezsurfcPurpose2ezsurfcEasy to use c
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ezsurfcy/(1 + x 2 + y 2 )0.505−0.
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feather21.510.50−0.5−1−1.5−
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figurePurpose2figureCreate a figure
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figureProperty Name Property Descri
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Figure PropertiesFigureProperties2F
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Figure PropertiesThis close request
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Figure PropertiesIf a figure contai
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Figure Propertiescontains colors th
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Figure PropertiesYou can set the ro
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Figure PropertiesTo ensure MATLAB u
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Figure PropertiesProperty ValueA4A5
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Figure PropertiesPointerShapeHotSpo
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Figure PropertiesThere is also a Si
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Figure PropertiesResize{on} | offWi
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Figure Propertiesclick. See uicontr
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Figure PropertiesWindowButtonDownFc
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Figure PropertiesThe information re
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fillIf C is a row vector, fill gene
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fill3If you specify color using C,
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findfigsPurpose2findfigsFind visibl
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findobjSee Alsocopyobj, gcf, gca, g
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fplotExamples Plot the hyperbolic t
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frame2imPurpose2frame2imConvert mov
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gcboPurpose2gcboReturn the handle o
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gcoPurpose2gcoReturn handle of curr
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geta = get(h,'Default') returns all
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getframeMATLAB and that can take ad
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ginputPurpose2ginputInput data usin
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gplotExamplesTo draw half of a Buck
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gridPurpose2gridGrid lines for two-
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helpdlgPurpose2helpdlgCreate a help
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hiddenPurpose2hiddenRemove hidden l
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histExamplesGenerate a bell-curve h
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holdPurpose2holdHold current graph
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im2framePurpose2im2frameConvert ind
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imageimage(x,y,C,'PropertyName',Pro
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imageWhen you write an indexed imag
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imageProperty Name Property Descrip
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Image PropertiesImageProperties2Ima
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Image Propertiesproduces:0.511.522.
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Image Properties• xor - Draw and
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Image Propertiesdefine the ButtonDo
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imagescPurpose2imagescScale data an
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imagescSee Alsoimage, colorbar2-245
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inputdlgPurpose2inputdlgCreate inpu
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ishandlePurpose2ishandleDetermines
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isocapsPurpose2isocapsCompute isosu
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isonormalsPurpose2isonormalsCompute
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isosurfacePurpose2isosurfaceExtract
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isosurfaceSee Alsoisonormals, isoca
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legendlegend_handle = legend return
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lightPurpose2lightCreate a light ob
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lightProperty Name Property Descrip
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Light PropertiesLightProperties2Lig
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Light PropertiesWhen a handle’s v
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lightanglePurpose2lightangleCreate
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linePurpose2lineCreate line objectS
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lineFinally, pop the first line to
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lineProperty Name Property Descript
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lineProperty Name Property Descript
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Line PropertiesCreateFcnstringCallb
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Line PropertiesSetting HandleVisibi
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Line PropertiesMarker Specifierphno
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Line PropertiesZDatavector of coord
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LineSpecLine Style SpecifiersSpecif
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LineSpec• LineWidth - specifies t
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LineSpec10.80.60.40.20−0.2−0.4
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listdlgExampleThis example displays
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loglogExamplesCreate a simple loglo
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materialproperties of all surface a
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mesh, meshc, meshzwireframe with hi
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mesh, meshc, meshzmeshc calls mesh,
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movieExamples Animate the peaks fun
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msgboxPurpose2msgboxDisplay message
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newplotNextPlotreplaceWhat HappensR
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orientPurpose2orientSet paper orien
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pagedlgPurpose2pagedlgDisplay page
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patchPurpose2patchCreate patch grap
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patchColor Data InterpretationYou c
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patch2V2 V31.91.8V51.71.61.51.41.31
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patchRootFigureAxesUicontrolUimenuU
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patchProperty Name Property Descrip
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patchProperty Name Property Descrip
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Patch PropertiesButtonDownFcn strin
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Patch PropertiesThe second diagram
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Patch PropertiesYou can also set th
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Patch PropertiesFaceColor{ColorSpec
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Patch Properties• An n-by-1 matri
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Patch Propertiesprotect GUIs from c
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Patch PropertiesMarker Specifierd^v
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Patch PropertiesYou can also set th
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pbaspectPurpose2pbaspectSet or quer
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pbaspectIt is also interesting to l
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pbaspect0.50−0.520−2−2020.50
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pcolorExamplesA Hadamard matrix has
Page 379 and 380: peaksPurpose2peaksA sample function
Page 381 and 382: pieExamplesEmphasize the second sli
Page 383 and 384: plotPurpose2plotLinear 2-D plotSynt
Page 385 and 386: plotproduce this graph.3210−1−2
Page 387 and 388: plot1Plot of sin(Θ)0.80.60.40.2sin
Page 389 and 390: plot33530252015105010.510−0.5−1
Page 391 and 392: plotmatrix50−51050−51050−5−
Page 393 and 394: plotyy10.500−10 1 2 3 4 5 6 7 −
Page 395 and 396: polarSee Alsocart2pol, compass, Lin
Page 397 and 398: print, printoptpcmd and dev are pla
Page 399 and 400: print, printoptDevice-dcdj550-dpain
Page 401 and 402: print, printoptOption-rnumber-adobe
Page 403 and 404: print, printoptTroubleshooting MS-W
Page 405 and 406: print, printoptNotes on Printing In
Page 407 and 408: printdlgPurpose2printdlgDisplay pri
Page 409 and 410: questdlgExampleCreate a question di
Page 411 and 412: quiverExamples Plot the gradient fi
Page 413 and 414: quiver3Examples Plot the surface no
Page 415 and 416: ox• For box definition, initialRe
Page 417 and 418: ectanglevertical curvature can be d
Page 419 and 420: ectangleThis example creates an ell
Page 421 and 422: ectangleProperty Name Property Desc
Page 423 and 424: ectangle propertiesRectanglePropert
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Page 429: ectangle propertiesVisible{on} | of
Page 433 and 434: educevolumePurpose2reducevolumeRedu
Page 435 and 436: educevolumeSee Alsoisosurface, isoc
Page 437 and 438: esetPurpose2resetReset graphics obj
Page 439 and 440: gbplotPurpose2rgbplotPlot colormapS
Page 441 and 442: ibbonExamplesCreate a ribbon plot o
Page 443 and 444: oot objectProperty Name Property De
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Page 451 and 452: Root PropertiesShowHiddenHandleson
Page 453 and 454: osePurpose2roseAngle histogramSynta
Page 455 and 456: otatePurpose2rotateRotate object ab
Page 457 and 458: otate3dPurpose2rotate3dRotate axes
Page 459 and 460: scatter−47.95−48−48.05−48.1
Page 461 and 462: scatter3Examples[x,y,z] = sphere(16
Page 463 and 464: semilogx, semilogyPurpose2semilogx,
Page 465 and 466: setPurpose2setSet object properties
Page 467 and 468: setparticular figure. When this fig
Page 469 and 470: shadingAlgorithmshading sets the Ed
Page 471 and 472: shrinkfacesPurpose2shrinkfacesReduc
Page 473 and 474: shrinkfacesAfter Shrinking210−1
Page 475 and 476: sliceRemarks The color drawn at eac
Page 477 and 478: sliceThe following picture illustra
Page 479 and 480: slice21.510.50−0.5−1−1.5−22
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spherePurpose2sphereGenerate sphere
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spinmapPurpose2spinmapSpin colormap
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stairs10.80.60.40.20−0.2−0.4−
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stemExamplesCreate a stem plot of 1
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stem3:21.510.500.50.40.30.20.1000.2
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stream3Purpose2stream3Compute 3-D s
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streamlineor[stepsize, max_number_v
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subplothandle, so it is an error to
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subvolume• A 100-element grayscal
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surf, surfcAlgorithmAbstractly, a p
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surf, surfcColor a sphere with the
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surf2patchAlso, because patch is a
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surfaceRemarksUnlike high-level are
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surfaceObjectHierarchyRootFigureAxe
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surfaceProperty Name Property Descr
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surfaceProperty Name Property Descr
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Surface PropertiesButtonDownFcn str
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Surface PropertiesEdgeColor{ColorSp
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Surface PropertiesFaceColorColorSpe
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Surface Propertiesgetframe, or paus
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Surface PropertiesMarkerSize size i
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Surface PropertiesVertexNormals vec
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surfllight source, use surfl(X',Y',
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surfnormPurpose2surfnormCompute and
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terminalPurpose2terminalSet graphic
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texlabelPurpose2texlabelProduce TeX
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textPurpose2textCreate text object
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textannotate the point at (pi,0) wi
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textProperty Name Property Descript
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textProperty Name Property Descript
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Text PropertiesCreateFcnstringCallb
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Text PropertiesExtentposition recta
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Text PropertiesWhen a handle is not
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Text PropertiesPosition[x,y,[z]]Loc
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Text PropertiesCharacterSequenceSym
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Text PropertiesVerticalAlignment to
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titlePurpose2titleAdd title to curr
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trimeshPurpose2trimeshTriangular me
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uicontextmenuPurpose2uicontextmenuC
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uicontextmenuWhen the user extend-c
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uicontextmenu Propertiesdefines a d
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uicontextmenu Propertieswhere vecto
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uicontrolString property (even thou
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uicontrolProperty Name Property Des
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uicontrolProperty Name Property Des
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uicontrolObjectHierarchyRootFigureA
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uicontrol Propertiesinterrupting ca
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uicontrol Properties• on - The ui
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uicontrol PropertiesFixedWidthFontN
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uicontrol Propertiesdefined, that c
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uicontrol Properties• Toggle butt
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uicontrol PropertiesFor multiple li
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uicontrol PropertiesSet the Value p
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uigetfileSee Alsouiputfile2-557
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uimenuYou can set and query propert
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uimenuExamplesThis example creates
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uimenu Propertiescallbacks; see the
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uimenu PropertiesForegroundColor Co
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uimenu Propertiescharacter while th
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uiputfilePurpose2uiputfileInteracti
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uiresume, uiwaitPurpose2uiresume, u
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uisetfontPurpose2uisetfontModify fo
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viewPurpose2viewViewpoint specifica
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viewaxes graphics object properties
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viewmtxT = viewmtx(az,el,phi,xc) re
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viewmtxTransform the cube vectors t
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waitforPurpose2waitforWait for cond
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warndlgPurpose2warndlgDisplay warni
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waterfallExamplesProduce a waterfal
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xlabel, ylabel, zlabelPurpose2xlabe
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xlim, ylim, zlimExamplesThis exampl
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zoomzoom(factor) zooms in or out by
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List of CommandsAList of Commands
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List of CommandsFunction Namesprint
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IndexAAcceleratorUimenu property 2-
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IndexLight property 2-265Line prope
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IndexSurface property 2-486Text pro
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IndexImage property 2-239Light prop
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Indexmesh 2-298meshc 2-298MeshStyle
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Indexwith non-normal EraseMode 2-23
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Indexcreating 2-474defining default
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IndexView, Axes property (obsolete)
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