jHepWork

jHepWork is a full-featured cross-platform and open source data-analysis framework written in Java.

jHepWork works on Linux, Mac OS X and Windows, and can do data visualization, data analysis, and scientific computation.

Features:

• Color syntax highlighting
• Multiple clipboards
• Multiple Eclipse-like bookmarks
• File browser
• Multi-document support
• Extensive LaTeX support
• Extensive configurability
• Enhanced console
• Data structures and data manipulation methods
• Extensive configurability

What is new in this release:

• This version adds a tool to convert units and measures [Tools]->[Unit conversion], with examples of how to do the conversions in Java/Jython code. JScience is included as system library.
• HChart plots/charts can be saved to vector format (EPS/PDF/SVG).
• A Plot class for simple plots has been added.
• A spreadsheet has been added to the tool bar [Tool]->[Spreadsheet].
• The HBook class to store all data objects in an XML file has been extended, and XML tags have changed to reflect these changes.
• It was also moved to the hplot.io package. HBook has the same methods to store data as HFile and PFile.

What is new in version 3.7:

• Input and error streams are redirected to an extra tab, "system console". One can disable the auto-update feature.
• A class called "SymRegression" has been added, which can be used to perform symbolic regression.
• Reading and exporting time series and tables in different formats is now supported, including ASCII, Gauss, Matlab, and Excel 97.
• Time series analysis was implemented (PRO version).
• It includes auto-correlation analysis, cross-correlation analysis, peak finder, and Gaussian filtering.
• The toTable() method was reimplemented and added to PND.

What is new in version 3.6:

• Based on version 3.5, but contains auto-updating of separate jar libraries (see the menu [Help]-[Update]).
• jMathLab was moved to v1.2.

What is new in version 3.5:

• All source code was recompiled using Java 7.
• The JMathLab (Octave/Matlab) computational environment was added as a "jMathLab Shell", and about 20 bugs were fixed.

What is new in version 3.4:

• This version corrected H2D classes (fill methods) and the installs.sh script for Macs.
• The JRuby language was integrated along with syntax for the JRuby editor and an integrated JRubyShell.
• Mouse wheel scrolling is now supported in the text area of the IDE. Jython 2.7a2 is supported.
• All system Java system messages are redirected to a pop-up window.
• HChart was rewritten and now has same methods as any other canvases and is supported by the Android version of jHepWork.

What is new in version 3.3:

• This version has a complete rewrite of data collections (speeds up the code by a factor of 3-5 compared to the previous releases).

What is new in version 3.1:

• All FreeHEP libraries are recompiled
• JSci libraries are incorporated
• F1D and F2D functions can be converted to histograms (H1D,H2D).
• isParsed() function is added. F1D function has 2 methods to extract X and Y
• arrays.
• Bug in positions of HLabel, HKey, HMLabel when using log scales
• Positions of HLabel, HKey, HMLabel were corrected when using USER
• coordinated system
• Canvas shows pixel positions (middle mouse click), in addition to USER, NDC
• Fixed positions of Y-labels (spacing for 1, 10 in non-log scales)
• Positions of HLabel, HKey, HMLabel were corrected when using USER
• coordinated system
• HKey class was rewritten. Now you can set key for data (H1D,P1D,F1D) just using these objects as input for HKey construction
• Bug in vectorgraphics was corrected. It is safe to run using Java7 (under
• Linux)
• Bug in setting tic axis for HPlot to a fixed number is fixed
• Labels for ticks can be replaced by custom strings (like time)
• HPlotJa has exactly the same constructors as HPlot.
• New jhplot.utils package. Currently a static class for integration of IJ package with hplot classes for image manipulation.

What is new in version 3.0:

• System.gc() was removed from the clearData() method in HPlot to speed up execution.
• The HChart class has several methods to set fonts. setNameX() and setNameY() were fixed.
• A memory leak in all canvases based on Graph.java was fixed.
• A new version of Protocol Buffers 2.4.1 is now used for jHepWork I/O.
• This will affect several classes from jhplot.io, such as PFile and PEventFile.
• A new Interplator class was added in jhplot.stat.
• This can be used to smooth data using spline and Loess (Lowess) Local Regression Algorithm.
• It can be applied to data P1D and histograms.
• FileRoot from jhplot.io was redone.
• One can navigate inside ROOT files using the standard method cd(dir1/dir).
• The getStat() methods of P1D, H1D, and P0D return a map/dictionary with detailed statistical information for these containers.

What is new in version 2.9:

• Bugs:
• Fixed all bugs in HPlotJa canvas discussed in the thread http://jwork.org/jhepwork/forum/viewtopic.php?id=6
• Fixed a allignment of "0" in the log scale of HPlot
• P0D and P0I cannot be serialized. Using transient for a private class.
• Some improvements:
• P0D, P0I, P1D, PND, PNI data containers have additional "read" methods to read data from URL
• HFile and Serialized method can accept URL file locations
• HPlot3D has white box by default
• HChart: default background is white
• PND container to keep multidimensional data have several methods to project data into 1D, 2D, 3D container for visualisation.