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QGISUserGuide,Release2.2
7.1.2 Edit
MenuOption
Shortcut
Reference
Toolbar
Undo
Ctrl+Z
seeAdvanceddigitizing
AdvancedDigitizing
Redo
Ctrl+Shift+Z
seeAdvanceddigitizing
AdvancedDigitizing
CutFeatures
Ctrl+X
seeDigitizinganexistinglayer
Digitizing
CopyFeatures
Ctrl+C
seeDigitizinganexistinglayer
Digitizing
PasteFeatures
Ctrl+V
seeDigitizinganexistinglayer
Digitizing
Pastefeaturesas
seeWorkingwiththeAttributeTable
AddFeature
Ctrl+.
seeDigitizinganexistinglayer
Digitizing
MoveFeature(s)
seeDigitizinganexistinglayer
Digitizing
DeleteSelected
seeDigitizinganexistinglayer
Digitizing
RotateFeature(s)
seeAdvanceddigitizing
AdvancedDigitizing
SimplifyFeature
seeAdvanceddigitizing
AdvancedDigitizing
AddRing
seeAdvanceddigitizing
AdvancedDigitizing
AddPart
seeAdvanceddigitizing
AdvancedDigitizing
FillRing
seeAdvanceddigitizing
AdvancedDigitizing
DeleteRing
seeAdvanceddigitizing
AdvancedDigitizing
DeletePart
seeAdvanceddigitizing
AdvancedDigitizing
ReshapeFeatures
seeAdvanceddigitizing
AdvancedDigitizing
OffsetCurves
seeAdvanceddigitizing
AdvancedDigitizing
SplitFeatures
seeAdvanceddigitizing
AdvancedDigitizing
SplitParts
seeAdvanceddigitizing
AdvancedDigitizing
MergeSelectedFeatures
seeAdvanceddigitizing
AdvancedDigitizing
MergeAttr.ofSelectedFeatures
seeAdvanceddigitizing
AdvancedDigitizing
NodeTool
seeDigitizinganexistinglayer
Digitizing
RotatePointSymbols
seeAdvanceddigitizing
AdvancedDigitizing
Afteractivating
Toggleediting
modeforalayer,youwillfindtheAdd FeatureiconintheEditmenudepend-
ingonthelayertype(point,lineorpolygon).
7.1.3 Edit(extra)
MenuOption
Shortcut
Reference
Toolbar
AddFeature
seeDigitizinganexistinglayer
Digitizing
AddFeature
seeDigitizinganexistinglayer
Digitizing
AddFeature
seeDigitizinganexistinglayer
Digitizing
7.1. MenuBar
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QGISUserGuide,Release2.2
7.1.4 View
MenuOption
Shortcut
Reference
Toolbar
PanMap
MapNavigation
PanMaptoSelection
MapNavigation
ZoomIn
Ctrl++
MapNavigation
ZoomOut
Ctrl+-
MapNavigation
Select
seeSelectanddeselectfeatures
Attributes
IdentifyFeatures
Ctrl+Shift+I
Attributes
Measure
seeMeasuring
Attributes
ZoomFull
Ctrl+Shift+F
MapNavigation
ZoomToLayer
MapNavigation
ZoomToSelection
Ctrl+J
MapNavigation
ZoomLast
MapNavigation
ZoomNext
MapNavigation
ZoomActualSize
MapNavigation
Decorations
seeDecorations
MapTips
Attributes
NewBookmark
Ctrl+B
seeSpatialBookmarks
Attributes
ShowBookmarks
Ctrl+Shift+B
seeSpatialBookmarks
Attributes
Refresh
Ctrl+R
MapNavigation
7.1.5 Layer
MenuOption
Shortcut
Reference
Toolbar
New
seeCreatingnewVectorlayers
ManageLayers
EmbedLayersandGroups...
seeNestingProjects
AddVectorLayer
Ctrl+Shift+V
seeWorkingwithVectorData
ManageLayers
AddRasterLayer
Ctrl+Shift+R
seeLoadingrasterdatainQGIS
ManageLayers
AddPostGISLayer
Ctrl+Shift+D
seePostGISLayers
ManageLayers
AddSpatiaLiteLayer
Ctrl+Shift+L
seeSpatiaLiteLayers
ManageLayers
AddMSSQLSpatialLayer
Ctrl+Shift+M
seelabel_mssql
ManageLayers
AddOracleGeoRasterLayer
seeOracleSpatialGeoRasterPlugin
ManageLayers
AddSQLAnywhereLayer
seeSQLAnywherePlugin
ManageLayers
AddWMS/WMTSLayer
Ctrl+Shift+W
seeWMS/WMTSClient
ManageLayers
AddWCSLayer
seeWCSClient
ManageLayers
AddWFSLayer
seeWFSandWFS-TClient
ManageLayers
AddDelimitedTextLayer
seelabel_dltext
ManageLayers
Copystyle
seeStyleMenu
Pastestyle
seeStyleMenu
Continuedonnextpage
26
Chapter7. QGISGUI
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QGISUserGuide,Release2.2
Table7.1–continuedfrompreviouspage
MenuOption
Shortcut
Reference
Toolbar
OpenAttributeTable
seeWorkingwiththeAttributeTable
Attributes
ToggleEditing
seeDigitizinganexistinglayer
Digitizing
SaveLayerEdits
seeDigitizinganexistinglayer
Digitizing
CurrentEdits
seeDigitizinganexistinglayer
Digitizing
Saveas...
Saveselectionasvectorfile...
SeeWorkingwiththeAttributeTable
RemoveLayer(s)
Ctrl+D
DuplicateLayers(s)
SetCRSofLayer(s)
Ctrl+Shift+C
SetprojectCRSfromLayer
Properties
Query...
Labeling
AddtoOverview
Ctrl+Shift+O
ManageLayers
AddAllToOverview
RemoveAllFromOverview
ShowAllLayers
Ctrl+Shift+U
ManageLayers
HideAllLayers
Ctrl+Shift+H
ManageLayers
7.1.6 Settings
MenuOption
Shortcut
Reference
Toolbar
Panels
seePanelsandToolbars
Toolbars
seePanelsandToolbars
ToggleFullScreenMode
F 11
ProjectProperties...
Ctrl+Shift+P
seeProjects
CustomCRS...
seeCustomCoordinateReferenceSystem
StyleManager...
seevector_style_manager
Configureshortcuts...
Customization...
seeCustomization
Options...
seeOptions
SnappingOptions...
7.1.7 Plugins
MenuOption
Shortcut
Reference
Toolbar
ManageandInstallPlugins
seeThePluginsMenus
PythonConsole
WhenstartingQGISforthefirsttimenotallcorepluginsareloaded.
7.1. MenuBar
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QGISUserGuide,Release2.2
7.1.8 Vector
MenuOption
Shortcut
Reference
Toolbar
OpenStreetMap
seeLoadingOpenStreetMapVectors
AnalysisTools
seefToolsPlugin
ResearchTools
seefToolsPlugin
GeoprocessingTools
seefToolsPlugin
GeometryTools
seefToolsPlugin
DataManagementTools
seefToolsPlugin
WhenstartingQGISforthefirsttimenotallcorepluginsareloaded.
7.1.9 Raster
MenuOption
Shortcut
Reference
Toolbar
Rastercalculator...
seeRasterCalculator
WhenstartingQGISforthefirsttimenotallcorepluginsareloaded.
7.1.10 Processing
MenuOption
Shortcut
Reference
Toolbar
Toolbox
seeThetoolbox
GraphicalModeler
seeThegraphicalmodeler
Historyandlog
seeThehistorymanager
Optionsandconfiguration
seeConfiguringtheprocessingframework
Resultsviewer
seeConfiguringexternalapplications
Commander
Ctrl+Alt+M
seeTheSEXTANTECommander
WhenstartingQGISforthefirsttimenotallcorepluginsareloaded.
7.1.11 Help
MenuOption
Shortcut
Reference
Toolbar
HelpContents
F1
Help
What’sThis?
Shift+F1
Help
APIDocumentation
Needcommercialsupport?
QGISHomePage
Ctrl+H
CheckQGISVersion
About
QGISSponsors
PleasenotethatforLinux
,themenubaritemslistedabovearethedefaultonesintheKDEwindowmanager.
InGNOME,theSettingsmenuhasdifferentcontentanditsitemshavetobefoundhere:
28
Chapter7. QGISGUI
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QGISUserGuide,Release2.2
ProjectProperties
Project
Options
Edit
ConfigureShortcuts
Edit
StyleManager
Edit
CustomCRS
Edit
Panels
View
Toolbars
View
ToggleFullScreenMode
View
Tilescaleslider
View
LiveGPStracking
View
7.2 Toolbar
Thetoolbarprovidesaccesstomostofthesamefunctionsasthemenus,plusadditionaltoolsforinteractingwith
themap.Eachtoolbaritemhaspop-uphelpavailable. Holdyourmouseovertheitemandashortdescriptionof
thetool’spurposewillbedisplayed.
Everymenubarcanbemovedaroundaccordingtoyourneeds.Additionally,everymenubarcanbeswitchedoff
usingyourrightmousebuttoncontextmenu,holdingthemouseoverthetoolbars(readalsoPanelsandToolbars).
Tip: Restoringtoolbars
Ifyouhaveaccidentallyhiddenallyourtoolbars,youcangetthembackbychoosingmenuoptionSettings
Toolbars→.IfatoolbardisappearsunderWindows,whichseemstobeaprobleminQGISfromtimetotime,you
havetoremovekey\HKEY_CURRENT_USER\Software\QGIS\qgis\UI\stateintheregistry. When
yourestartQGIS,thekeyiswrittenagainwiththedefaultstate,andalltoolbarsarevisibleagain.
7.3 MapLegend
Themaplegendarealistsallthelayersintheproject.Thecheckboxineachlegendentrycanbeusedtoshowor
hidethelayer.
AlayercanbeselectedanddraggedupordowninthelegendtochangetheZ-ordering. Z-orderingmeansthat
layerslistednearerthetopofthelegendaredrawnoverlayerslistedlowerdowninthelegend.
Note: Thisbehaviourcanbeoverriddenbythe‘Layerorder’panel.
Layersinthelegendwindowcanbeorganisedintogroups.Therearetwowaystodothis:
1. RightclickinthelegendwindowandchooseAddNewGroup. Typeinanameforthegroupandpress
Enter.Nowclickonanexistinglayeranddragitontothegroup.
2. Selectsomelayers,rightclickinthelegendwindowandchooseGroupSelected. Theselectedlayerswill
automaticallybeplacedinanewgroup.
Tobringalayeroutofagroup,youcandragitout,orrightclickonitandchooseMaketotoplevelitem.Groups
canalsobenestedinsideothergroups.
Thecheckboxforagroupwillshoworhideallthelayersinthegroupwithoneclick.
Thecontentoftherightmousebuttoncontextmenudependsonwhethertheselectedlegenditemisarasteror
avectorlayer. ForGRASSvectorlayers,
Toggleediting
isnotavailable. SeesectionDigitizingandeditinga
GRASSvectorlayerforinformationoneditingGRASSvectorlayers.
Rightmousebuttonmenuforrasterlayers
• Zoomtolayerextent
7.2. Toolbar
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QGISUserGuide,Release2.2
• ZoomtoBestScale(100%)
• StretchUsingCurrentExtent
• Showinoverview
• Remove
• Duplicate
• SetLayerCRS
• SetProjectCRSfromLayer
• Saveas...
• Properties
• Rename
• CopyStyle
• AddNewGroup
• Expandall
• Collapseall
• UpdateDrawingOrder
Additionally,accordingtolayerpositionandselection
• Maketotoplevelitem
• GroupSelected
Rightmousebuttonmenuforvectorlayers
• ZoomtoLayerExtent
• ShowinOverview
• Remove
• Duplicate
• SetLayerCRS
• SetProjectCRSfromLayer
• OpenAttributeTable
• ToggleEditing(notavailableforGRASSlayers)
• SaveAs...
• SaveSelectionAs
• Filter
• ShowFeatureCount
• Properties
• Rename
• CopyStyle
• AddNewGroup
• Expandall
• Collapseall
• UpdateDrawingOrder
Additionally,accordingtolayerpositionandselection
30
Chapter7. QGISGUI
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QGISUserGuide,Release2.2
• Maketotoplevelitem
• GroupSelected
Rightmousebuttonmenuforlayergroups
• ZoomtoGroup
• Remove
• SetGroupCRS
• Rename
• AddNewGroup
• Expandall
• Collapseall
• UpdateDrawingOrder
ItispossibletoselectmorethanonelayerorgroupatthesametimebyholdingdowntheCtrlkeywhileselecting
thelayerswiththeleftmousebutton.Youcanthenmoveallselectedlayerstoanewgroupatthesametime.
YoumayalsodeletemorethanonelayerorgroupatoncebyselectingseverallayerswiththeCtrlkeyand
pressingCtrl+Dafterwards.Thisway,allselectedlayersorgroupswillberemovedfromthelayerslist.
7.3.1 WorkingwiththeLegendindependentlayerorder
Thereisapanelthatallowsyoutodefineanindependentdrawingorderforthemaplegend. Youcanactivate
itinthemenuSettingsPanelsLayerorder. Thisfeatureallowsyouto,forinstance,orderyourlayersin
orderofimportance,butstilldisplaytheminthecorrectorder(seefigure_layer_order).Checkingthe
Control
renderingorderboxunderneaththelistoflayerswillcauseareverttodefaultbehavior.
Figure7.2:Definealegendindependentlayerorder
7.3. MapLegend
31
QGISUserGuide,Release2.2
7.4 MapView
Thisisthe“businessend”ofQGIS—mapsaredisplayedinthisarea! Themapdisplayedinthiswindowwill
dependonthevectorandrasterlayersyouhavechosentoload(seesectionsthatfollowformoreinformationon
howtoloadlayers). Themapviewcanbepanned,shiftingthefocusofthemapdisplaytoanotherregion,and
itcanbezoomedinandout. Variousotheroperationscanbeperformedonthemapasdescribedinthetoolbar
descriptionabove. Themapviewandthelegendaretightlyboundtoeachother—themapsinviewreflect
changesyoumakeinthelegendarea.
Tip: ZoomingtheMapwiththeMouseWheel
Youcanusethemousewheeltozoominandoutonthemap.Placethemousecursorinsidethemapareaandroll
thewheelforward(awayfromyou)tozoominandbackwards(towardsyou)tozoomout.Thezoomiscentered
onthemousecursorposition.YoucancustomizethebehaviorofthemousewheelzoomusingtheMaptoolstab
undertheSettingsOptionsmenu.
Tip: PanningtheMapwiththeArrowKeysandSpaceBar
Youcanusethearrowkeystopanthemap. Placethemousecursorinsidethemapareaandclickontheright
arrowkeytopaneast,leftarrowkeytopanwest,uparrowkeytopannorthanddownarrowkeytopansouth.You
canalsopanthemapusingthespacebarortheclickonmousewheel:justmovethemousewhileholdingdown
spacebarorclickonmousewheel.
7.5 StatusBar
Thestatusbarshowsyouyourcurrentpositioninmapcoordinates(e.g.,metersordecimaldegrees)asthemouse
pointerismovedacrossthemapview.Totheleftofthecoordinatedisplayinthestatusbarisasmallbuttonthat
willtogglebetweenshowingcoordinatepositionortheviewextentsofthemapviewasyoupanandzoominand
out.
Nexttothecoordinatedisplayyouwillfindthescaledisplay.Itshowsthescaleofthemapview.Ifyouzoominor
out,QGISshowsyouthecurrentscale.Thereisascaleselector,whichallowsyoutochoosebetweenpredefined
scalesfrom1:500to1:1000000.
Aprogressbarinthestatusbarshowstheprogressofrenderingaseachlayerisdrawntothemapview.Insome
cases,suchasthegatheringofstatisticsinrasterlayers,theprogressbarwillbeusedtoshowthestatusoflengthy
operations.
Ifanewpluginorapluginupdateisavailable,youwillseeamessageatthefarleftofthestatusbar.Ontheright
sideofthestatusbar,thereisasmallcheckboxwhichcanbeusedtotemporarilypreventlayersbeingrenderedto
themapview(seesectionRenderingbelow).Theicon
immediatelystopsthecurrentmaprenderingprocess.
Totherightoftherenderfunctions,youfindtheEPSGcodeofthecurrentprojectCRSandaprojectoricon.
Clickingonthisopenstheprojectionpropertiesforthecurrentproject.
Tip: CalculatingtheCorrectScaleofYourMapCanvas
WhenyoustartQGIS,thedefaultunitsaredegrees,andthismeansthatQGISwillinterpretanycoordinateinyour
layerasspecifiedindegrees.Togetcorrectscalevalues,youcaneitherchangethissettingtometersmanuallyin
theGeneraltabunderSettingsProjectProperties,oryoucanselectaprojectCRSclickingonthe
CRSstatus
iconinthelowerright-handcornerofthestatusbar.Inthelastcase,theunitsaresettowhattheprojectprojection
specifies(e.g.,‘+units=m’).
.
32
Chapter7. QGISGUI
CHAPTER
8
GeneralTools
8.1 Keyboardshortcuts
QGISprovidesdefaultkeyboardshortcutsformanyfeatures.YoucanfindtheminsectionMenuBar.Addition-
ally,themenuoptionSettingsConfigureShortcuts.. allowsyoutochangethedefaultkeyboardshortcutsand
toaddnewkeyboardshortcutstoQGISfeatures.
Figure8.1:Defineshortcutoptions
(Gnome)
Configurationisverysimple.Justselectafeaturefromthelistandclickon[Change],[Setnone]or[Setdefault].
Onceyouhavefinishedyourconfiguration,youcansaveitasanXMLfileandloadittoanotherQGISinstallation.
8.2 Contexthelp
Whenyouneedhelponaspecifictopic,youcanaccesscontexthelpviathe[Help]buttonavailableinmost
dialogs—pleasenotethatthird-partypluginscanpointtodedicatedwebpages.
8.3 Rendering
Bydefault,QGISrendersallvisiblelayerswheneverthemapcanvasisrefreshed.Theeventsthattriggerarefresh
ofthemapcanvasinclude:
• Addingalayer
• Panningorzooming
33
QGISUserGuide,Release2.2
• ResizingtheQGISwindow
• Changingthevisibilityofalayerorlayers
QGISallowsyoutocontroltherenderingprocessinanumberofways.
8.3.1 ScaleDependentRendering
Scale-dependentrenderingallowsyoutospecifytheminimumandmaximumscalesatwhichalayerwillbe
visible. Tosetscale-dependentrendering, , openthePropertiesdialogbydouble-clickingonthelayerinthe
legend. OntheGeneraltab,clickonthe
Scaledependentvisibilitycheckboxtoactivatethefeature,thenset
theminimumandmaximumscalevalues.
Youcandeterminethescalevaluesbyfirstzoomingtothelevelyouwanttouseandnotingthescalevalueinthe
QGISstatusbar.
8.3.2 ControllingMapRendering
Maprenderingcanbecontrolledinthevariousways,asdescribedbelow.
SuspendingRendering
Tosuspendrendering,clickthe
Rendercheckboxinthelowerrightcornerofthestatusbar. Whenthe
Rendercheckboxisnotchecked,QGISdoesnotredrawthecanvasinresponsetoanyoftheeventsdescribedin
sectionRendering.Examplesofwhenyoumightwanttosuspendrenderinginclude:
• Addingmanylayersandsymbolizingthempriortodrawing
• Addingoneormorelargelayersandsettingscaledependencybeforedrawing
• Addingoneormorelargelayersandzoomingtoaspecificviewbeforedrawing
• Anycombinationoftheabove
Checkingthe
Rendercheckboxenablesrenderingandcausesanimmediaterefreshofthemapcanvas.
SettingLayerAddOption
Youcansetanoptiontoalwaysloadnewlayerswithoutdrawingthem. Thismeansthelayerwillbeaddedto
themap,butitsvisibilitycheckboxinthelegendwillbeuncheckedbydefault. Tosetthisoption,choosemenu
optionSettingsOptionsandclickontheRenderingtab. Uncheckthe
Bydefaultnewlayersaddedtothe
mapshouldbedisplayedcheckbox.Anylayersubsequentlyaddedtothemapwillbeoff(invisible)bydefault.
StoppingRendering
Tostopthemapdrawing,presstheESCkey. Thiswillhalttherefreshofthemapcanvasandleavethemap
partiallydrawn.ItmaytakeabitoftimebetweenpressingESCandthetimethemapdrawingishalted.
Note: Itiscurrentlynotpossibletostoprendering—thiswasdisabledintheQt4portbecauseofUserInterface
(UI)problemsandcrashes.
34
Chapter8. GeneralTools
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