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ROOT 6.10/09 Reference Guide |
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ROOT 6.10/09 Reference Guide |
Class to manage histogram axis.
This class manages histogram axis. It is referenced by TH1 and TGraph. To make a graphical representation of an histogram axis, this class references the TGaxis class. TAxis supports axis with fixed or variable bin sizes. Labels may be associated to individual bins. See examples of various axis representations drawn by class TGaxis.
Public Types | |
| enum | { kDecimals = BIT(7), kTickPlus = BIT(9), kTickMinus = BIT(10), kAxisRange = BIT(11), kCenterTitle = BIT(12), kCenterLabels = BIT(14), kRotateTitle = BIT(15), kPalette = BIT(16), kNoExponent = BIT(17), kLabelsHori = BIT(18), kLabelsVert = BIT(19), kLabelsDown = BIT(20), kLabelsUp = BIT(21), kIsInteger = BIT(22), kMoreLogLabels = BIT(23) } |
 Public Types inherited from TObject | |
| enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
| enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
| enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
Public Member Functions | |
| TAxis () | |
| Default constructor. More... | |
| TAxis (Int_t nbins, Double_t xmin, Double_t xmax) | |
| Axis constructor for axis with fix bin size. More... | |
| TAxis (Int_t nbins, const Double_t *xbins) | |
| Axis constructor for variable bin size. More... | |
| TAxis (const TAxis &axis) | |
| Copy constructor. More... | |
| virtual | ~TAxis () |
| Destructor. More... | |
| Bool_t | CanBeAlphanumeric () |
| Bool_t | CanExtend () const |
| void | CenterLabels (Bool_t center=kTRUE) |
| Center axis labels. More... | |
| void | CenterTitle (Bool_t center=kTRUE) |
| Center axis title. More... | |
| void | ChangeLabel (Int_t labNum=0, Double_t labAngle=-1., Double_t labSize=-1., Int_t labAlign=-1, Int_t labColor=-1, Int_t labFont=-1, TString labText="") |
| Define new text attributes for the label number "labNum". More... | |
| const char * | ChooseTimeFormat (Double_t axislength=0) |
| Choose a reasonable time format from the coordinates in the active pad and the number of divisions in this axis If orientation = "X", the horizontal axis of the pad will be used for ref. More... | |
| virtual void | Copy (TObject &axis) const |
| Copy axis structure to another axis. More... | |
| virtual void | Delete (Option_t *="") |
| Delete this object. More... | |
| virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
| Compute distance from point px,py to an axis. More... | |
| virtual TObject * | DrawClone (Option_t *="") const |
Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More... | |
| virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
| Execute action corresponding to one event. More... | |
| virtual Int_t | FindBin (Double_t x) |
| Find bin number corresponding to abscissa x. More... | |
| virtual Int_t | FindBin (Double_t x) const |
| virtual Int_t | FindBin (const char *label) |
| Find bin number with label. More... | |
| virtual Int_t | FindFixBin (Double_t x) const |
| Find bin number corresponding to abscissa x. More... | |
| virtual Int_t | FindFixBin (const char *label) const |
| Find bin number with label. More... | |
| virtual Double_t | GetBinCenter (Int_t bin) const |
| Return center of bin. More... | |
| virtual Double_t | GetBinCenterLog (Int_t bin) const |
| Return center of bin in log With a log-equidistant binning for a bin with low and up edges, the mean is : 0.5*(ln low + ln up) i.e. More... | |
| const char * | GetBinLabel (Int_t bin) const |
| Return label for bin. More... | |
| virtual Double_t | GetBinLowEdge (Int_t bin) const |
| Return low edge of bin. More... | |
| virtual Double_t | GetBinUpEdge (Int_t bin) const |
| Return up edge of bin. More... | |
| virtual Double_t | GetBinWidth (Int_t bin) const |
| Return bin width. More... | |
| virtual void | GetCenter (Double_t *center) const |
| Return an array with the center of all bins. More... | |
| Bool_t | GetCenterLabels () const |
| Bool_t | GetCenterTitle () const |
| Bool_t | GetDecimals () const |
| Int_t | GetFirst () const |
| Return first bin on the axis i.e. More... | |
| THashList * | GetLabels () const |
| Int_t | GetLast () const |
| Return last bin on the axis i.e. More... | |
| virtual void | GetLowEdge (Double_t *edge) const |
| Return an array with the lod edge of all bins. More... | |
| TList * | GetModifiedLabels () const |
| Bool_t | GetMoreLogLabels () const |
| Int_t | GetNbins () const |
| Bool_t | GetNoExponent () const |
| virtual TObject * | GetParent () const |
| Bool_t | GetRotateTitle () const |
| virtual const char * | GetTicks () const |
| Return the ticks option (see SetTicks) More... | |
| virtual Bool_t | GetTimeDisplay () const |
| virtual const char * | GetTimeFormat () const |
| virtual const char * | GetTimeFormatOnly () const |
| Return only the time format from the string fTimeFormat. More... | |
| const char * | GetTitle () const |
| Returns title of object. More... | |
| const TArrayD * | GetXbins () const |
| Double_t | GetXmax () const |
| Double_t | GetXmin () const |
| virtual void | ImportAttributes (const TAxis *axis) |
| Copy axis attributes to this. More... | |
| Bool_t | IsAlphanumeric () |
| Bool_t | IsVariableBinSize () const |
| virtual void | LabelsOption (Option_t *option="h") |
| Set option(s) to draw axis with labels option can be: More... | |
| TAxis & | operator= (const TAxis &) |
| Assignment operator. More... | |
| void | RotateTitle (Bool_t rotate=kTRUE) |
| Rotate title by 180 degrees. More... | |
| virtual void | SaveAttributes (std::ostream &out, const char *name, const char *subname) |
| Save axis attributes as C++ statement(s) on output stream out. More... | |
| virtual void | Set (Int_t nbins, Double_t xmin, Double_t xmax) |
| Initialize axis with fix bins. More... | |
| virtual void | Set (Int_t nbins, const Float_t *xbins) |
| Initialize axis with variable bins. More... | |
| virtual void | Set (Int_t nbins, const Double_t *xbins) |
| Initialize axis with variable bins. More... | |
| void | SetAlphanumeric (Bool_t alphanumeric=kTRUE) |
| Set axis alphanumeric. More... | |
| virtual void | SetBinLabel (Int_t bin, const char *label) |
| Set label for bin. More... | |
| void | SetCanExtend (Bool_t canExtend) |
| void | SetDecimals (Bool_t dot=kTRUE) |
| Sets the decimals flag By default, blank characters are stripped, and then the label is correctly aligned. More... | |
| virtual void | SetDefaults () |
| Set axis default values (from TStyle) More... | |
| virtual void | SetDrawOption (Option_t *="") |
| Set drawing option for object. More... | |
| virtual void | SetLimits (Double_t xmin, Double_t xmax) |
| void | SetMoreLogLabels (Bool_t more=kTRUE) |
| Set the kMoreLogLabels bit flag When this option is selected more labels are drawn when in log scale and there is a small number of decades (<3). More... | |
| void | SetNoAlphanumeric (Bool_t noalpha=kTRUE) |
| void | SetNoExponent (Bool_t noExponent=kTRUE) |
| Set the NoExponent flag By default, an exponent of the form 10^N is used when the label value are either all very small or very large. More... | |
| virtual void | SetParent (TObject *obj) |
| virtual void | SetRange (Int_t first=0, Int_t last=0) |
| Set the viewing range for the axis from bin first to last. More... | |
| virtual void | SetRangeUser (Double_t ufirst, Double_t ulast) |
| Set the viewing range for the axis from ufirst to ulast (in user coordinates). More... | |
| virtual void | SetTicks (Option_t *option="+") |
| Set ticks orientation. More... | |
| virtual void | SetTimeDisplay (Int_t value) |
| virtual void | SetTimeFormat (const char *format="") |
| Change the format used for time plotting. More... | |
| virtual void | SetTimeOffset (Double_t toffset, Option_t *option="local") |
| Change the time offset If option = "gmt", set display mode to GMT. More... | |
| virtual void | UnZoom () |
| Reset first & last bin to the full range. More... | |
| virtual void | ZoomOut (Double_t factor=0, Double_t offset=0) |
| Zoom out by a factor of 'factor' (default =2) uses previous zoom factor by default Keep center defined by 'offset' fixed ie. More... | |
| Public Member Functions inherited from TNamed | |
| TNamed () | |
| TNamed (const char *name, const char *title) | |
| TNamed (const TString &name, const TString &title) | |
| TNamed (const TNamed &named) | |
| TNamed copy ctor. More... | |
| virtual | ~TNamed () |
| virtual void | Clear (Option_t *option="") |
| Set name and title to empty strings (""). More... | |
| virtual TObject * | Clone (const char *newname="") const |
| Make a clone of an object using the Streamer facility. More... | |
| virtual Int_t | Compare (const TObject *obj) const |
| Compare two TNamed objects. More... | |
| virtual void | FillBuffer (char *&buffer) |
| Encode TNamed into output buffer. More... | |
| virtual const char * | GetName () const |
| Returns name of object. More... | |
| virtual ULong_t | Hash () const |
| Return hash value for this object. More... | |
| virtual Bool_t | IsSortable () const |
| virtual void | ls (Option_t *option="") const |
| List TNamed name and title. More... | |
| TNamed & | operator= (const TNamed &rhs) |
| TNamed assignment operator. More... | |
| virtual void | Print (Option_t *option="") const |
| Print TNamed name and title. More... | |
| virtual void | SetName (const char *name) |
| Set the name of the TNamed. More... | |
| virtual void | SetNameTitle (const char *name, const char *title) |
| Set all the TNamed parameters (name and title). More... | |
| virtual void | SetTitle (const char *title="") |
| Set the title of the TNamed. More... | |
| virtual Int_t | Sizeof () const |
| Return size of the TNamed part of the TObject. More... | |
| Public Member Functions inherited from TObject | |
| TObject () | |
| TObject constructor. More... | |
| TObject (const TObject &object) | |
| TObject copy ctor. More... | |
| virtual | ~TObject () |
| TObject destructor. More... | |
| void | AbstractMethod (const char *method) const |
| Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
| virtual void | AppendPad (Option_t *option="") |
| Append graphics object to current pad. More... | |
| virtual void | Browse (TBrowser *b) |
| Browse object. May be overridden for another default action. More... | |
| virtual const char * | ClassName () const |
| Returns name of class to which the object belongs. More... | |
| virtual void | Draw (Option_t *option="") |
| Default Draw method for all objects. More... | |
| virtual void | DrawClass () const |
| Draw class inheritance tree of the class to which this object belongs. More... | |
| virtual void | Dump () const |
| Dump contents of object on stdout. More... | |
| virtual void | Error (const char *method, const char *msgfmt,...) const |
| Issue error message. More... | |
| virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
| Execute method on this object with the given parameter string, e.g. More... | |
| virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
| Execute method on this object with parameters stored in the TObjArray. More... | |
| virtual void | Fatal (const char *method, const char *msgfmt,...) const |
| Issue fatal error message. More... | |
| virtual TObject * | FindObject (const char *name) const |
| Must be redefined in derived classes. More... | |
| virtual TObject * | FindObject (const TObject *obj) const |
| Must be redefined in derived classes. More... | |
| virtual Option_t * | GetDrawOption () const |
| Get option used by the graphics system to draw this object. More... | |
| virtual const char * | GetIconName () const |
| Returns mime type name of object. More... | |
| virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
| Returns string containing info about the object at position (px,py). More... | |
| virtual Option_t * | GetOption () const |
| virtual UInt_t | GetUniqueID () const |
| Return the unique object id. More... | |
| virtual Bool_t | HandleTimer (TTimer *timer) |
| Execute action in response of a timer timing out. More... | |
| virtual void | Info (const char *method, const char *msgfmt,...) const |
| Issue info message. More... | |
| virtual Bool_t | InheritsFrom (const char *classname) const |
| Returns kTRUE if object inherits from class "classname". More... | |
| virtual Bool_t | InheritsFrom (const TClass *cl) const |
| Returns kTRUE if object inherits from TClass cl. More... | |
| virtual void | Inspect () const |
| Dump contents of this object in a graphics canvas. More... | |
| void | InvertBit (UInt_t f) |
| virtual Bool_t | IsEqual (const TObject *obj) const |
| Default equal comparison (objects are equal if they have the same address in memory). More... | |
| virtual Bool_t | IsFolder () const |
| Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
| Bool_t | IsOnHeap () const |
| Bool_t | IsZombie () const |
| void | MayNotUse (const char *method) const |
| Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More... | |
| virtual Bool_t | Notify () |
| This method must be overridden to handle object notification. More... | |
| void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
| Use this method to declare a method obsolete. More... | |
| void | operator delete (void *ptr) |
| Operator delete. More... | |
| void | operator delete[] (void *ptr) |
| Operator delete []. More... | |
| void * | operator new (size_t sz) |
| void * | operator new (size_t sz, void *vp) |
| void * | operator new[] (size_t sz) |
| void * | operator new[] (size_t sz, void *vp) |
| TObject & | operator= (const TObject &rhs) |
| TObject assignment operator. More... | |
| virtual void | Paint (Option_t *option="") |
| This method must be overridden if a class wants to paint itself. More... | |
| virtual void | Pop () |
| Pop on object drawn in a pad to the top of the display list. More... | |
| virtual Int_t | Read (const char *name) |
| Read contents of object with specified name from the current directory. More... | |
| virtual void | RecursiveRemove (TObject *obj) |
| Recursively remove this object from a list. More... | |
| void | ResetBit (UInt_t f) |
| virtual void | SaveAs (const char *filename="", Option_t *option="") const |
| Save this object in the file specified by filename. More... | |
| virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
| Save a primitive as a C++ statement(s) on output stream "out". More... | |
| void | SetBit (UInt_t f, Bool_t set) |
| Set or unset the user status bits as specified in f. More... | |
| void | SetBit (UInt_t f) |
| virtual void | SetUniqueID (UInt_t uid) |
| Set the unique object id. More... | |
| virtual void | SysError (const char *method, const char *msgfmt,...) const |
| Issue system error message. More... | |
| Bool_t | TestBit (UInt_t f) const |
| Int_t | TestBits (UInt_t f) const |
| virtual void | UseCurrentStyle () |
| Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More... | |
| virtual void | Warning (const char *method, const char *msgfmt,...) const |
| Issue warning message. More... | |
| virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
| Write this object to the current directory. More... | |
| virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
| Write this object to the current directory. More... | |
| Public Member Functions inherited from TAttAxis | |
| TAttAxis () | |
| virtual | ~TAttAxis () |
| Destructor. More... | |
| void | Copy (TAttAxis &attaxis) const |
| Copy of the object. More... | |
| virtual Color_t | GetAxisColor () const |
| virtual Color_t | GetLabelColor () const |
| virtual Style_t | GetLabelFont () const |
| virtual Float_t | GetLabelOffset () const |
| virtual Float_t | GetLabelSize () const |
| virtual Int_t | GetNdivisions () const |
| virtual Float_t | GetTickLength () const |
| virtual Color_t | GetTitleColor () const |
| virtual Style_t | GetTitleFont () const |
| virtual Float_t | GetTitleOffset () const |
| virtual Float_t | GetTitleSize () const |
| virtual void | ResetAttAxis (Option_t *option="") |
| Reset axis attributes. More... | |
| virtual void | SetAxisColor (Color_t color=1, Float_t alpha=1.) |
| Set color of the line axis and tick marks. More... | |
| virtual void | SetLabelColor (Color_t color=1, Float_t alpha=1.) |
| Set color of labels. More... | |
| virtual void | SetLabelFont (Style_t font=62) |
| Set labels' font. More... | |
| virtual void | SetLabelOffset (Float_t offset=0.005) |
| Set distance between the axis and the labels The distance is expressed in per cent of the pad width. More... | |
| virtual void | SetLabelSize (Float_t size=0.04) |
| Set size of axis labels The size is expressed in per cent of the pad width. More... | |
| virtual void | SetNdivisions (Int_t n=510, Bool_t optim=kTRUE) |
| Set the number of divisions for this axis. More... | |
| virtual void | SetNdivisions (Int_t n1, Int_t n2, Int_t n3, Bool_t optim=kTRUE) |
| see function above More... | |
| virtual void | SetTickLength (Float_t length=0.03) |
| Set tick mark length The length is expressed in per cent of the pad width. More... | |
| virtual void | SetTickSize (Float_t size=0.03) |
| virtual void | SetTitleColor (Color_t color=1) |
| Set color of axis title. More... | |
| virtual void | SetTitleFont (Style_t font=62) |
| Set the title font. More... | |
| virtual void | SetTitleOffset (Float_t offset=1) |
| Set distance between the axis and the axis title Offset is a correction factor with respect to the "standard" value. More... | |
| virtual void | SetTitleSize (Float_t size=0.04) |
| Set size of axis title The size is expressed in per cent of the pad width. More... | |
Private Types | |
| enum | { kAlphanumeric = BIT(0), kCanExtend = BIT(1), kNotAlpha = BIT(2) } |
Private Member Functions | |
| Bool_t | HasBinWithoutLabel () const |
| this helper function checks if there is a bin without a label if all bins have labels, the axis can / will become alphanumeric More... | |
Private Attributes | |
| UShort_t | fBits2 |
| Int_t | fFirst |
| THashList * | fLabels |
| Object owning this axis. More... | |
| Int_t | fLast |
| TList * | fModLabs |
| Int_t | fNbins |
| TObject * | fParent |
| Bool_t | fTimeDisplay |
| TString | fTimeFormat |
| TArrayD | fXbins |
| Double_t | fXmax |
| Double_t | fXmin |
Additional Inherited Members | |
| Static Public Member Functions inherited from TObject | |
| static Long_t | GetDtorOnly () |
| Return destructor only flag. More... | |
| static Bool_t | GetObjectStat () |
| Get status of object stat flag. More... | |
| static void | SetDtorOnly (void *obj) |
| Set destructor only flag. More... | |
| static void | SetObjectStat (Bool_t stat) |
| Turn on/off tracking of objects in the TObjectTable. More... | |
| Protected Member Functions inherited from TObject | |
| virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
| Interface to ErrorHandler (protected). More... | |
| void | MakeZombie () |
| Protected Attributes inherited from TNamed | |
| TString | fName |
| TString | fTitle |
| Protected Attributes inherited from TAttAxis | |
| Color_t | fAxisColor |
| Color of the line axis. More... | |
| Color_t | fLabelColor |
| Color of labels. More... | |
| Style_t | fLabelFont |
| Font for labels. More... | |
| Float_t | fLabelOffset |
| Offset of labels. More... | |
| Float_t | fLabelSize |
| Size of labels. More... | |
| Int_t | fNdivisions |
| Number of divisions(10000*n3 + 100*n2 + n1) More... | |
| Float_t | fTickLength |
| Length of tick marks. More... | |
| Color_t | fTitleColor |
| Color of axis title. More... | |
| Style_t | fTitleFont |
| Font for axis title. More... | |
| Float_t | fTitleOffset |
| Offset of axis title. More... | |
| Float_t | fTitleSize |
| Size of axis title. More... | |
#include <TAxis.h>
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private |
| anonymous enum |
| void TAxis::ChangeLabel | ( | Int_t | labNum = 0, |
| Double_t | labAngle = -1., |
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| Double_t | labSize = -1., |
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| Int_t | labAlign = -1, |
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| Int_t | labColor = -1, |
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| Int_t | labFont = -1, |
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| TString | labText = "" |
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| ) |
Define new text attributes for the label number "labNum".
It allows to do a fine tuning of the labels. All the attributes can be changed, even the label text itself.
| [in] | labNum | Number of the label to be changed, negative numbers start from the end |
| [in] | labAngle | New angle value |
| [in] | labSize | New size (0 erase the label) |
| [in] | labAlign | New alignment value |
| [in] | labColor | New label color |
| [in] | labFont | New label font |
| [in] | labText | New label text |
If an attribute should not be changed just give the value "-1".
If labnum=0 the list of modified labels is reset.
| const char * TAxis::ChooseTimeFormat | ( | Double_t | axislength = 0 | ) |
Choose a reasonable time format from the coordinates in the active pad and the number of divisions in this axis If orientation = "X", the horizontal axis of the pad will be used for ref.
If orientation = "Y", the vertical axis of the pad will be used for ref.
Execute action corresponding to one event.
This member function is called when an axis is clicked with the locator. The axis range is set between the position where the mouse is pressed and the position where it is released. If the mouse position is outside the current axis range when it is released the axis is unzoomed with the corresponding proportions. Note that the mouse does not need to be in the pad or even canvas when it is released.
Reimplemented from TObject.
Find bin number corresponding to abscissa x.
NOTE: this method does not work with alphanumeric bins !!!
If x is underflow or overflow, attempt to extend the axis if TAxis::kCanExtend is true. Otherwise, return 0 or fNbins+1.
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virtual |
Find bin number with label.
If the List of labels does not exist create it and make the axis alphanumeric If one wants just to add a single label- just call TAxis::SetBinLabel If label is not in the list of labels do the following depending on the bit TAxis::kCanExtend; of the axis.
-1 is returned only when the Axis has no parent histogram
Find bin number corresponding to abscissa x.
Identical to TAxis::FindBin except that if x is an underflow/overflow no attempt is made to extend the axis.
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virtual |
Return center of bin in log With a log-equidistant binning for a bin with low and up edges, the mean is : 0.5*(ln low + ln up) i.e.
sqrt(low*up) in logx (e.g. sqrt(10^0*10^2) = 10). Imagine a bin with low=1 and up=100 :
NB: if the low edge of the bin is negative, the function returns the bin center as computed by TAxis::GetBinCenter
| const char * TAxis::GetBinLabel | ( | Int_t | bin | ) | const |
| Int_t TAxis::GetFirst | ( | ) | const |
Return first bin on the axis i.e.
1 if no range defined NOTE: in some cases a zero is returned (see TAxis::SetRange)
| Int_t TAxis::GetLast | ( | ) | const |
Return last bin on the axis i.e.
fNbins if no range defined NOTE: in some cases a zero is returned (see TAxis::SetRange)
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virtual |
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inlinevirtual |
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inlinevirtual |
|
virtual |
|
inlinevirtual |
|
private |
Set option(s) to draw axis with labels option can be:
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virtual |
Set label for bin.
If no label list exists, it is created. If all the bins have labels, the axis becomes alphanumeric and extendable. New labels will not be added with the Fill method but will end-up in the underflow bin. See documentation of TAxis::FindBin(const char*)
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virtual |
Set drawing option for object.
This option only affects the drawing style and is stored in the option field of the TObjOptLink supporting a TPad's primitive list (TList). Note that it does not make sense to call object.SetDrawOption(option) before having called object.Draw().
Reimplemented from TObject.
Set the kMoreLogLabels bit flag When this option is selected more labels are drawn when in log scale and there is a small number of decades (<3).
The flag (in fBits) is passed to the drawing function TGaxis::PaintAxis
Set the NoExponent flag By default, an exponent of the form 10^N is used when the label value are either all very small or very large.
The flag (in fBits) is passed to the drawing function TGaxis::PaintAxis
Set the viewing range for the axis from bin first to last.
To set a range using the axis coordinates, use TAxis::SetRangeUser.
Set the viewing range for the axis from ufirst to ulast (in user coordinates).
To set a range using the axis bin numbers, use TAxis::SetRange.
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virtual |
Change the format used for time plotting.
The format string for date and time use the same options as the one used in the standard strftime C function, i.e. : for date :
%a abbreviated weekday name
%b abbreviated month name
%d day of the month (01-31)
%m month (01-12)
%y year without century
for time :
%H hour (24-hour clock)
%I hour (12-hour clock)
%p local equivalent of AM or PM
%M minute (00-59)
%S seconds (00-61)
%% %
This function allows also to define the time offset. It is done via F which should be appended at the end of the format string. The time offset has the following format: 'yyyy-mm-dd hh:mm:ss' Example:
h = new TH1F("Test","h",3000,0.,200000.);
h->GetXaxis()->SetTimeDisplay(1);
h->GetXaxis()->SetTimeFormat("%d\/%m\/%y%F2000-02-28 13:00:01");
This defines the time format being "dd/mm/yy" and the time offset as the February 28th 2003 at 13:00:01
If F is not specified, the time offset used will be the one defined by: gStyle->SetTimeOffset. For example like that:
TDatime da(2003,02,28,12,00,00);
gStyle->SetTimeOffset(da.Convert());
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ROOT 6.10/09 - Reference Guide Generated on Thu May 31 2018 12:14:10 using Doxygen 1.8.13.