a STAR Visualization and plotting tools

STAR visualization and plotting

Introduction

Visualization (eg, looking at tracks).
Plotting (eg, graphs and histograms).
Presentation (eg, decoration of the Web pages and GUI with math formulas).

Visualization

Offline Event Display
Online Event Pool Display
STAR Geometry Browser (see PowerPoint file also)
Simple C++ classes (StuDraw3DEvent) to render 3D points, lines, tracks. hits etc against of the detector geometry

Plotting

Helix Browser
XY scanner is a tool for scientist in the need to extract data points, i.e. numeric values, from a plot.
xyplot - ROOT macro to plot data in the tabulated form

Math Formulas

To use the math formulas embedded into your Web pages MathML language can be used. ( Check "Presentation Markup")
According to http://www.mathmlcentral.com "... Wolfram Research's Mathematical Functions website now features more than 87'000 MathML formulas. . . . "
The same language can used to embed the formulas described by MathML into the ROOT pictures with QtMmlWidget plugin (included into STAR QtRoot sub-package)
To create the MathML formula files the OpenOffice or Formula Editor can be downloaded and used (for Windows) from HermiTech lab"
You may want to install techexplorer Hypermedia Browser and Integre MathML Equation Editor( ( free for personal use ) to get the high quality formula rendering with your Internet Browser
$C (x) = d \sqrt{\frac{2}{λ D}} \int_{0}^{x} \cos (\frac{π}{2} t^{2}) dt$

STAR Animations

(new) Au-Au collision
See another page that illustrates the technique used to render this movie
Au-Au collision

Qt-layer for ROOT (ROOT layer for Qt) - the unique technology creating the complex data-analysis and the computer simulation interactive software packages and problem-oriented applications based on Qt and ROOT frameworks

Click here to install Root 5.24.00 with Qt layer on Windows Desktop

The installation script allows "one click" Web installation of the ROOT with Qt-layer on Windows XP/2000/9x. It contains the ROOT file with the complete It includes the STAR geometry

and Geometry viewer to navigate it.

Useful links

Gifsicle is a command-line tool for creating, editing, and getting information about GIF images and animations
ImageMagick - is a free software suite to create, edit, and compose bitmap images.
CyberWit - data analysis, animation, and graphing software package (for Windows only)
GNUPlot - is a portable command-line driven interactive data and function plotting utility.
PLplot - is a software package for creating scientific plots.
FreeCAD - FreeCAD is an OpenSource CAD/CAE, based on OpenCascade, Qt, Coin3D and Python. It can read and process the files generated by STAR St_geom_Maker from GEANT3 STAR geometry definition.
Open Inventor™ Nodes. Quick Reference

As Seen on the Web

http://www.nature.com

Under construction!

STAR Image Library

A collection of general graphics showing STAR event-data visualizations and hardware representations. The image library includes event-visualizer images.

DSV - a general data visualizer (Duncan Prindle)

DSV is a general graphics package for data visualization and browsing. DSV stands for Data Set Viewer. A data set is generally any homogeneous collection o f objects, such as the reconstructed space points in the STAR detector or particle information from an event generator, and is often a rather complex entity. Reconstructed space points may have x, y and z positions, correlations between these, deposited ionization, and chi^2 as well as errors on these quantities. Standard event displays pick out a few of these quantities for display. Histograming packages usually let you choose what quantities to plot or histogra m but have limited capabilities for interacting with the data. DSV permits rather general on-the-fly definition of data elements and function al combinations for representation in a 3D space projected to a 2D screen. Object definitions can be by drag-and-drop or command-line entry. Interaction with the displayed data is very comprehensive, involving zooms, rotates, translates and picks to display associated data structures in table widgets. There is extensive capability for color editing, flagging and data marking and hiding. DSV currently consists of a hierarchical tree for browsing the structure of a data file, an event display (qcd) for 3D representations of data sets, and scrollable table widgets (2D grids of numbers) to present subsets of the data set in tabula r form.

Pages of related interest

Pagemaster: Valeri Fine