When using the option 2 above, new labels are added by doubling the current number of bins in case one label does not exist yet.
"d" draw labels down (start of label left adjusted)."u" draw labels up (end of label right adjusted).The reordering can be triggered via the TAxis context menu by selecting the menu item "LabelsOption" or by calling directly TH1::LabelsOption(option, axis) where By default, an axis is drawn with the order of bins corresponding to the filling sequence. When using the options 2 or 3 above, the labels are automatically added to the list ( THashList) of labels for a given axis. The inheritance hierarchy looks as follows:ĭefinition: tree.py:1 where "Nation" and "Division" are two branches of a Tree. (*) INT_MAX = 2147483647 is the maximum value for a variable of type int. Profile histograms are in many cases an elegant replacement of two-dimensional histograms : the inter-relation of two measured quantities X and Y can always be visualized by a two-dimensional histogram or scatter-plot If Y is an unknown (but single-valued) approximate function of X, this function is displayed by a profile histogram with much better precision than by a scatter-plot. Profile histograms are used to display the mean value of Y and its standard deviation for each bin in X. Profile histograms: See classes TProfile, TProfile2D and TProfile3D.TH3D : histograms with one double per channel.TH3F : histograms with one float per channel.TH3I : histograms with one int per channel.TH3S : histograms with one short per channel.TH3C : histograms with one byte per channel.TH2D : histograms with one double per channel.TH2F : histograms with one float per channel.TH2I : histograms with one int per channel.TH2S : histograms with one short per channel.TH2C : histograms with one byte per channel.TH1D : histograms with one double per channel.TH1F : histograms with one float per channel.TH1I : histograms with one int per channel.TH1S : histograms with one short per channel.TH1C : histograms with one byte per channel.ROOT supports the following histogram types: Saving/reading histograms to/from a ROOT file.Setting Drawing histogram contour levels (2-D hists only).
It provides the common interface for operations such as binning, filling, drawing, which will be detailed below. TH1 is the base class of all histogram classes in ROOT.
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