User's Guide

List of Figures

1.1. ROOT framework directories

1.2. ROOT framework directories

1.3. ROOT libraries dependencies

2.1. A canvas with drawing

2.2. A context menu

2.3. The SaveAs... dialog

3.1. The class hierarchy of histogram classes

3.2. The "E1" bars' option

3.3. Different draw options

3.4. The TEXT option

3.5. Different contour options

3.6. The earth.C macro output

3.7. "LEGO" and "SURF" options

3.8. Different surface options

3.9. Vertical bar charts

3.10. Horizontal bar charts

3.11. The picture produced by spectrumpainter.C macro

3.12. The picture produced by fit2a.C macro

3.13. Superimposed histograms with different scales

3.14. Histograms with alphanumeric bin labels

3.15. Using a *char variable type in TTree::Draw

3.16. Stacked histograms

3.17. A TH2Poly histogram example

3.18. A profile histogram example

3.19. A TProfile2D histogram example

3.20. Iso surfaces

3.21. 3D implicit function

3.22. The picture generated by tutorial macro piechart.C

4.1. A graph drawn with axis, * markers and continuous line (option AC*)

4.2. A graph drawn with axis and bar (option AB)

4.3. A graph drawn with axis and fill (option AF)

4.4. Graph markers created in different ways

4.5. Superimposing two graphs

4.6. Graphs with different draw options of error bars

4.7. A graph with asymmetric error bars

4.8. A graph with asymmetric bent error bars

4.9. A polar graph

4.10. Graphs with exclusion zones

4.11. Examples of qq-plots of 2 datasets

4.12. Examples of qq-plots of 1 dataset

4.13. A multigraph example

4.14. Delaunay triangles and Voronoi diagram

4.15. Graph2D drawn with option "surfl" and "tril p0"

4.16. Output of macro graph2dfit.C

4.17. A graph with axis titles

4.18. A zoomed graph

5.1. The function x*sin(x)

5.2. Fitting a histogram with several Gaussian functions

5.3. The output of the FittingDemo() example

5.4. The neural net output

5.5. The original and the neural net for Br

7.1. ROOT object inspector of TFile

7.2. The object inspector of fKeys, the list of keys in the memory

8.1. The ROOT Object Browser

9.1. Context menus of different objects in a canvas

9.2. A histogram drawn in a pad

9.3. Pad coordinate systems

9.4. The status bar

9.5. Dividing a pad into 6 sub-pads

9.6. Different arrow formats

9.7. Different types of ellipses

9.8. A rectangle with a border

9.9. Markers

9.10. Different marker sizes

9.11. The use of non-symmetric markers

9.12. The picture generated by the tutorial macro feynman.C

9.13. The picture generated by the tutorial macro latex.C

9.14. The picture generated by the tutorial macro latex2.C

9.15. The picture generated by the tutorial macro latex3.C

9.16. PaveLabels drawn with different options

9.17. PaveText examples

9.18. A PaveText example

9.19. A TMathText example

9.20. Y-axis with and without exponent labels

9.21. Time axis examples

9.22. A histogram with time axis X

9.23. The first axis example

9.24. The second axis example

9.25. An axis example with time display

9.26. Font’s examples

9.27. The various patterns

9.28. The basic ROOT colors

9.29. Different draw options

9.30. A legend example

9.31. Invoking external 3D viewers from canvas menus

9.32. The GL 3D Viewer

9.33. GL Viewer camera interactions

9.34. GL Viewer draw styles

9.35. GL Viewer interactive box clipping

9.36. GL Viewer object manipulators

9.37. Overview of 3D viewer architecture

9.38. TBuffer3D class hierarchy

10.1. Tasks in the ROOT browser

11.1. The browser with 15 created histograms

11.2. ROOT File/Directory/Key description

11.3. The structure of TFile

11.4. The file before and after the call to Write

11.5. Compression and precision of Double32_t

11.6. A diagram of a streamed TH1F in the buffer

11.7. Streaming object pointers

11.8. The ROOT schema evolution

11.9. The schema evolution for objects written on disk and in memory

12.1. Activating the tree viewer

12.2. The TreeViewer

12.3. A couple of graphs

12.4. The TTree class

12.5. The tree1.root file and its tree in the browser

12.6. A leaf histogram

12.7. The tree viewer

12.8. The tree viewer with tree4 example

12.9. Using draw options in trees

13.1. Math libraries and packages

13.2. PDF, CDF and quantiles in the case of the normal distribution

14.1. Overview of matrix classes

14.2. Speed comparison between the different matrix packages

16.1. The inheritance hierarchy of the primary collection classes

16.2. The internal data structure of a TList

16.3. The internal data structure of a TObjArray

16.4. The internal data structure of a TClonesArray

18.1. Concentration of C14 derived elements

18.2. Concentracion of elements derived fromCa53+Sr78

18.3. Primitive Shapes - the general inheritance scheme

18.4. TGeoBBox class

18.5. TGeoPara class

18.6. TGeoTrd1 class

18.7. TGeoTrd2 class

18.8. TGeoTrap Class

18.9. TGeoGtra class

18.10. TGeoArb8 class

18.11. TGeoTube Class

18.12. TGeoTubeSeg Class

18.13. TGeoCtub Class

18.14. TGeoEltu Class

18.15. TGeoHype Class

18.16. TGeoCone Class

18.17. TGeoConeSeg Class

18.18. TGeoSphere Class

18.19. TGeoTorus Class

18.20. TGeoParaboloid Class

18.21. TGeoPcon Class

18.22. TGeoPgon Class

18.23. TGeoXtru Class

18.24. The composite shapes structure

18.25. Representation of A+B+C

18.26. Internal representation for composite shapes

18.27. A composite shape example

18.28. A geometry hierarchy in memory

18.29. Assemblies of volumes

18.30. Extruding volumes

18.31. Overlap checking

18.32. Safety computation checking

18.33. Random points

18.34. Random rays

18.35. Ray-traced view in a pad

18.36. Ray-tracing example with box-clipping

18.37. Navigation in the geometry hierarchy

18.38. Finding the location of a point in the geometry hierarchy

18.39. Finding the distance to the next crossed boundary

18.40. The geometry manager editor

18.41. Accessing/creating different categories of editable objects

18.42. Selection dialogs for different TGeo objects

18.43. Editors for shapes, materials, media, matrices

18.44. Setting volume properties and modifying volume hierarchy

18.45. Volume visualisation settings and division interface for volumes

20.1. Native GUI widgets

22.1. Server - Client setting-up and closing the connection

24.1. The Multi-tier structure of a PROOF cluster

25.1. Widgets created by ROOT GUI classes

25.2. The GUI classes hierarchy

25.3. The layout classes hierarchy

25.4. Histogram, pad and axis editors