Before proceeding make sure you have carried out the video section of the
Pete Border and Bernie Becker have assembled the following videos that
introduce ROOT examination and analysis of our data.
Please note, the videos were made with ROOT version 3.10.
In ROOT version 4 the graphics interface to the graphical style has changed,
although the functionality remains the same.
There is also a tutorial
to accompany these videos.
- Root 1 (11 mins, 30MB), available in
Features starting Root, starting a browser and looking at a histogram
- Starting ROOT with a data file name.
- The TBrowser.
- Creating a histogram by double clicking an ntuple leaf
- Adding axis label. Changing to log scale. Switching on grid. Changing the Stats box.
- Fitting and displaying results.
- Cutting on an axis
- Changing a plot appearance. Printing a plot.
- Root 2 (14 mins, 34MB), available in
space. More on the browser
- Tour of ntuple records.
- Calculating the reconstruction fraction.
- Sorting ntuple entries.
- Looking at track parameters.
- Looking at Cosmic Ray headers.
- Command line scanning. Using TBrowser to recall names.
- Drawing and cutting.
- Root 3 (13 mins, 25MB), available in
space. Two-dimensional histograms and cuts
- Creating a 1D histogram to control binning. Histogram filling.
- 2D plotting. Chaining a plot's appearance.
- Creating a 2D histogram.
- Applying multiple cuts.
- Root 4 (19 mins, 21MB), available in
space. Using a script file
- Creating macros.
- Defining cuts (TCut).
- Defining chains (TChain). Wildcarding.
- Creating and dividing a canvas.
- Setting style.
- Limiting Y axis. Setting axis title.
- Executing macros.
See also Standard N-tuples
and the video on
using the event display.
Note to Maintainers: When making changes please follow the maintenance rules