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Reference Guide
hist/doc/Hist.md
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1 \defgroup Hist Histogram Library
2 \brief A general description of the Histogram library is documented in the class TH1.
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4 ROOT supports the following histogram types:
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6 * 1-D histograms:
7  * TH1C : histograms with one byte per channel. Maximum bin content = 127
8  * TH1S : histograms with one short per channel. Maximum bin content = 32767
9  * TH1I : histograms with one int per channel. Maximum bin content = 2147483647
10  * TH1F : histograms with one float per channel. Maximum precision 7 digits
11  * TH1D : histograms with one double per channel. Maximum precision 14 digits
12 * 2-D histograms:
13  * TH2C : histograms with one byte per channel. Maximum bin content = 127
14  * TH2S : histograms with one short per channel. Maximum bin content = 32767
15  * TH2I : histograms with one int per channel. Maximum bin content = 2147483647
16  * TH2F : histograms with one float per channel. Maximum precision 7 digits
17  * TH2D : histograms with one double per channel. Maximum precision 14 digits
18 * 3-D histograms:
19  * TH3C : histograms with one byte per channel. Maximum bin content = 127
20  * TH3S : histograms with one short per channel. Maximum bin content = 32767
21  * TH3I : histograms with one int per channel. Maximum bin content = 2147483647
22  * TH3F : histograms with one float per channel. Maximum precision 7 digits
23  * TH3D : histograms with one double per channel. Maximum precision 14 digits
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25  See also:
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27  - [The Chapter about the Histogram classes in the Users Guide](ftp://root.cern.ch/root/doc/3Histograms.pdf)
28  - [The Chapter about Fitting Histogram in the Users Guide](ftp://root.cern.ch/root/doc/5FittingHistograms.pdf)
29  - [How to use the Histogram classes](http://root.cern.ch/drupal/content/how-use-histograms-classes)
30  - [How to Merge files with histograms and Trees](http://root.cern.ch/drupal/content/how-merge-histograms-files)
31  - [How to Fit Histograms](http://root.cern.ch/drupal/content/how-fit-histograms-or-data-points)
32  - [How to Fit find peaks in histograms](http://root.cern.ch/root/html/tutorials/spectrum/peaks.C.html)
33  - [How to convert Hbook/PAW files to ROOT](http://root.cern.ch/drupal/content/how-convert-hbookpaw-files-root-files)