tecplot入门.docx

tecplot入门.docx

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tecplot入门

IntroductiontoTecplot

TecplotusesthestandardX-motifinterface（buttons,pulldownmenus,popupwindows,...）.Itisveryeasytouse.Tecplotcanbeusedtocreategraphs,draw2-Dsurfacesandcreatecontourandvectorplotsof2-Ddata.Withapointandclickinterface,annotation,text,lines,circles,rectanglesandsuch,canbeadded.Ithascapabilitiesfor3-Ddataaswell.

WithTecplot,itiseasytocreateandpositionmanygraphsandplotsonasinglepage.Eachgraphorplotisinsidea"frame".Framescanbecopiedandthenmodified.Thisallowsyoutoeasilyshowdifferentviewsofthesamedataset:

justcopyaframeandthenmodifyit.

ThisisanintroductiontoTecplot,notacompletemanual.Ifyougothroughthesepages,youwillbeabletodrawgraphs,surfacesandcontours.Afterthis,playwithTecplot:

itcandofarmore.Theprinciplesdescribedhereapplytomostofthetecplotdrawingfunctions.Withalittleeffortandsomeexperimentation,youwillbeabletodomuch,muchmore.Mosteverythingisaccessibleinmorethanoneway,soifyoucannotfindsomething,pulldownmenus.

ForassistancewithTecplot,pleasecontactRaviChityala（chityala@msi.umn.edu）orhelp@msi.umn.edu.

GettingStartedwithTecplot

Fornow,youmayuseTecplotfromanyInstitutemachine.Wehaveincreasedtheuserseatstounlimitednumber.ThatmeansyoucanstartTecplotanytimenomatterhowmanyotherusershavebeenusingit.

TostartTecplottype

moduleaddtecplot

tecplot

Ifsuccessful,youwillseethefollowingwindow.

Therestofthispageconsistsofdisjointtopics.Thefirst3arethestepsthatIgothroughatthebeginningofatecplotsession.Theremainingareotherstepsthatyoumaywanttotaketocontroltheappearenceofthetecplotwindow.

FrameHeaderandBorder

Ifyouwanttoturnofftheframeheader,pullthe"Frame"menudownto"EditCurrentFrame...".Awindowwillpopup.Clickontheboxnextto"ShowHeader".Toseethechangetotakeeffect,clickthe"Close"button.

Theframebordercanbeturnedoffinasimilarmanner.Whendone,press"Close"

ReadinginaDataFile

Toreadinadatafile,pullthe"File"menudownto"LoadDataFile（s）...".Awindowwillpopup.Note:

Thefilterissettoshowonlyfileswithextension"plt".Toseeallfiles,delete".plt"fromthefilterandclickon"Filter".

Tecplotcanreadseveraltypesoffiles.Todoso,tecplotwillrunpreplotonthefileselected.

WorkingwithFrames

Toresizeaframe,clickonthearrowbuttoninthetoolpallateontheleftsideofthescreen,clickontheboundaryofframe,Resizehandleswillappearontheframeasshowninthefollowingfigure.

Usingtheleftmousebutton,draganytheseresizehandles.

Tomoveaframe,choosethearrowbuttoninthetoolpallateclickontheboundaryoftheframethatyouwanttomove.Nowmovethecursortotheedgeoftheframe,butnotonaresizehandle.Thecursorwillchangetoacross.Whilethecursorisacross,usetheleftmousebuttontomovetheframe.

Aframemaybecopied.Tocopyaframe,clickontheboundaryoftheframethatyouwanttocopy,pulldownthe"Edit"menuto"Copy",thenpulldownthe"Edit"menuto"Paste".Thenewframeisplacedrightontopoftheoldframe.Nowmovethenewframetothenewposition.Thiscopiesthedataandallsettingstothenewframe.Asshowninthefollowingfigure,eitherframecanbemodified.

TecplotGraphs

TwoDimensionalGraphs

Tecplotisveryflexiblewhendrawinggraphs.Itcandothefollowing,theoneswithlinksarediscussedinthisdocument.

∙BasicXYPlots

∙Assignavariabletoanaxis

∙Changethelengthandscaleoftheaxes

∙Plotmultipledatasets.

∙Plotmultiplegraphs,multipleaxis

∙Plotmultipledatasets.

∙Scatterplots,withchoiceofsymbols.

∙3Dgraphs

Todrawagraphusingtecplot,justreadinyouronedimensionaldata.Thegraphwillappearsimilartotheoneshownbelow.

Therearemanythingsthatyoucandowiththegraph.Clickonthe"MappingStyle..."button.Ifyoudon'tseethe"MappingStyle..."button,doubleclickonthegraph.Whenyouclickonthe"Mappingstyle..."button,youwillseethefollowing.

Fromthismenu,youcancontrolhowthegraphisplotted.Thevariousfeaturesarebrokendownbycategory:

"Definitions","Lines","Curves","Symbols",....Toselectthecategory,clickontheappropriatebutton.Thecategories,definitions,linesandsymbolsarediscusedbelow.

∙Definitions:

Youcanassignavariabletothex-axisandtothey-axis.Toassignavariabletothey-axis,justclickon"Y-AxisVariable".Awindowwillpopup.Choosethevariablethatyoutousefortheverticalaxis.Thex-axisishandledinasimilarmanner.

∙Lines:

Selectthe"Lines"categorytosetlinecolor,linewidth,linestyle（Solid,dotted,dashed,...）,linecolorandmore.Justpointandclick.

∙Symbols（ScatterPlots）:

Toshowasymbol（square,circle）atthedatapoints,clickontheboxnextto"Symbols"intheupperleftcornerofthetecplotwindow.Ifyoujustwanttoseesymbols-nolineconnectingthepoints-unselectthe"Lines"intheupperleftcorner.Inthe"Mappingstyle"window,clickon"Symbols".Youshouldseethefollowing.

Fromhere,youcanselectthesymbolshape,outlinecolor,fillcolor,sizeandspacing.Justclickontheappropriatebutton.Tocontrolthespacing,clickon"SymbSpacing"andthenclickon"Iskip=2","Iskip=3"or"Iskip=4"whichwilldrawthesymbolateverysecond,thirdorfourthpointrespectively.Ifthisisstilltoomany.Usethe"EnterIndex..."optiontomanuallyenteraskipvalue.

ControllingtheAxis.

Toadjusttheaxes,includingtickmarks,labels,andlength,pullthe"Axis"menudownfrom"Plot"menu.Youwillseethefollowing

Acrossthetop,isalistofaxesthatyoucandisplayandmodify.Selectthedesiredaxis.Intheabovethe"X1"axisisselected.Amodificationoccursonlyontheselectedaxis.

Hereeverythingbutrangeiseasytouse,justremember"Labels"meansthenumbersthatappearnexttothetickmarks,and"Title"meansthenameofthevariable.

Therangeoptioncanbeconfusing.

∙Ifoneoftheaxisistoolong,youcanchangetherange.Thereareseveralthingstosetbeforeyouchangetherange.Unselect"PreserveLengthwhenChangingRange"andselect"Independent".

∙Ifyouwanttochangetherangetozoomin,select"PreserveLengthwhenChangingRange"andselect"Dependent".Youmayhavetoenteraratiotodeterminethescaleoftheaxis.

∙Youcanalsochangethescalebyselectingthearrowfromthetoolspalette,clickingonanaxis,thendraggingaresizehandle（ablacksquare）tochangethesizeoftheplot.Note:

Thischangesthescaleofallaxes.

Preservingthelengthkeepstheaxisthesamelength,thescalechanges.

Whenthingsgowrong,pulldownthe"View"menuto"DataFit".Tecplotwilldoitsbesttofitthedatatotheframe.

PlottingMultipleDataSets

Tecplotcanplotmultipledatasets.Theeasiestwaytoplotmultipledatasetsistocreateafilecontainingallthedataset,eachdatasetisazoneinthefile.Inthe"Mappingstyle"window,youcanturnonandoffvariouszones.Justclickonthedesiredzone（thatis,clickonthelinethatarelistedbymapnumber）,orclickanddragtochoosemultiplezones,thenclickonthe"MapShow"button.Youcanthenactivateordeactivatetheselectedzone（s）.

Youcanalsoplotmultipledatasetsthatareindifferentfiles.Theeasiestwaytodothisistoreadallthedatasetsinatonce.

∙Pullthe"File"menudownto"LoadDataFile（s）...".Youwillseethefollowingwindow.

∙Clickon"MultipleFiles".Thiswindowwillchange.Enterthenameofeachofthefilethatyouwanttoreadin.Betweeneachfileeitherpressthereturnkeyorclickonthe"Add"button.Whenallfileshavebeenselected,press"OK".

∙Thefirstfilewillbeplotted.Toplottheotherfiles,clickon""Mappingstyle..."Selectthedesireddataset-eachdatasetisassignedamapnumbercorrespondingtheorderthatyouselectedthedatafiles-byclickingonthelinecontainingthedesiredmaporbyclickinganddraggingtoselectmultiplemaps.Nowclickonthe"MapShow"buttonandactivateordeactivate.

∙Youmayhavetopullthe"ViewMenu"downto"DataFit"toviewallthedatasets.

MultipleGraphsMultipleAxes

Youcanshowmultipleaxiswhenyouhavemultipledatasets.

Inthe"Mappingstyle"window,select"Definitions".Nowclickon"WhichY-Axis"andselecttheappropriateaxis.That'sit.Youcanmodifythenewaxisbypullingdownthe"Axis"menufrom"Plot"andselectingtheappropriateaxis

ThreeDimensionalGraphs

Tecplotcandrawthreedimensionalgraphs.Readinyourdata,thenclickonthe"3Dcartesian"fromthepulldownmenuintheupperleftcornerofthetecplotwindow,thenredraw.Aswith2Dgraphs,youcanmodifywiththeaxislabels,majorandminorgridmarks,gridbackground.Todoso,pulldownthe"Axis"menufrom"Plot".Clickonthedesiredbuttonandenterthedesiredsettingsforeachaxis.

TecplotContours

Contoursin2Dimensions

First,turnthemeshoff,byclickingontheboxnextto"Mesh".Nowclickontheboxnexttocontour"Contour".

Modificationsonthecontourplotinclude:

thenumberoflevels,color,atableandshading.

Toaddcolortothecontourplot,clickon"Zonestyle...".Thefollowingwindowwillappear.

Pullthe"ContourType"menudownto"Lines"andclick"Close".Hereisanexample.（Wewillsoonseehowtoaddthetable.）

Youcanfillinthecontourplotwithcolorsasshowninthefollowingfigure.

Todothis,youwillneedthe"Zonestyle..."windowshownpreviouslyonthispage.Pulldownthe"Co