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Modular Java Toolkit for Analysis of
HEP data |
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Data Format Independent |
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Experiment Independent |
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Supports arbitrarily complex analysis
modules written in Java |
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Rich Graphical User Interface (GUI)
with: |
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Data Explorer |
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Flexible Histogram + Scatterplot
display |
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Histogram manipulation+fitting |
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Built-in Editor/Compiler (for writing
analysis modules) |
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Extensible via plugins |
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User extensible via Object Orientated
API's |
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Written entirely in Java so will run on
any platform with a Java VM (JDK 1.1 or better) |
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Support: Windows 95/98/NT/2000 + Linux
+ Solaris |
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Works on: DEC + SGI + Mac |
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All source code now stored in CVS |
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Use any CVS client for anonymous
(read-only) access |
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We recommend jCVS (pure Java CVS
client) |
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Source code all web browsable |
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Implemented using jCVS servlet |
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Write access can be given to interested
developers |
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Intend to put entire code under LGPL |
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Platform independent build system |
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Uses jmk - pure java make-like tool |
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To build entire system on any platform
with CVS and Java |
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cvs co jas
cd jas
java -jar jmk.jar |
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1+2-D histograms and scatter plots |
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Scatter Plot display optimized for
1000’s of points |
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Overlaying of several histograms or
scatter plots |
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Interactive function fitting for 1-D
plots |
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Direct User Interaction by clicking and
dragging |
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Numeric or time axes, plus axes with
named bins |
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Many display styles that can be set
interactively or programmatically |
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Dynamic creation and display of slices
and projections of 2-D data. |
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Very efficient redrawing to support
rapidly changing data (handles over 100 updates/second). |
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Printing using both Java 1 and Java 2
printing models. High quality print output is available when using Java 2. |
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Saving plots as GIF images or as
XML. Support for encapsulated postscript and PDF is in progress. |
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Custom overlays which allow data to be
displayed using user defined plot routines for specialized plots. |
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XML specifies a generic syntax for a
markup language but no tags |
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Users specify tags to use for a
specific problem domain |
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HTML roughly an XML instance for web
pages |
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Tag set formally specified by a DTD. |
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Have defined tag set for markup of
plots |
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Tried to make it generic so it could be
used by other programs |
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JASHist bean directly supports
reading/writing XML |
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XML file can store |
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Display style + snapshot of current
data |
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Display style + reference to (live)
data |
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XML is ASCII file (like HTML) so can be
hand edited |
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Use as a replacement for TopDraw! |
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Example XML File: |
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JASHist can be used to create plots
from a Servlet |
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Example of using JASHist bean in
another application. |
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Servlet vaguely similar to Java Applet |
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Both could be used to but a
"live" plot on a web page |
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Sevlet runs on web server and sends GIF
to browser |
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No need for java support in browser |
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No worries about browser
version/functionality |
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No slow download of Java code |
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JASHist just requires data source to
provide simple interface |
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Easy to interface to many different
data sources |
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Many examples on our web site |
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Being used to display PingER from SLAC
network group |
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Earlier versions of JAS used custom
source code editor |
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Now replaced with JEdit Syntax
Highlighter/Editor Bean |
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Part of pure Java JEdit editor |
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Syntax Highlighting (Java + HTML + XML
etc) |
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Improved source code editing |
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Auto indent |
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Parenthesis matching |
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Customizable Syntax highlighting |
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Intending to incorporate more JEdit
features in future |
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Searching/Replacing/Macros/etc |
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Eventually to support JEdit plugin
architecture |
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Code completion |
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Interactive Fullscreen Debugging |
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Babar using for Online Monitoring |
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Using Online Monitoring API |
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HTML Pages with embedded plots |
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Custom Overlays |
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US Linear Collider Studies |
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Have an entire recon+analysis package
written in Java |
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Using JAS as analysis interface |
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Making use of remote data access using
repository at University of Pennsylvania |
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Other smaller scale users |
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All giving very valuable feedback |
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Helping to produce more reliable
solution |
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LCD Tutorial exists |
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Nice step by step tutorial for
beginners |
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Examples are all based on LCD but can
be used by anyone |
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Starts from very beginning |
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Slowly adding information to Users
Guide |
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Still nowhere near complete |
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How To being created to cover specific
topics |
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Servlets How To |
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HTML How To |
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XML How To |
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Online API How To |
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Working on Fitting How To |
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JavaDoc generated API documentation
available |
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Documentation remains weak link |
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We are aware of this and are working on
producing more documentation |
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Also need more design specs/internals
documentation to make open source model more effective |
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