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@pont-us pont-us released this Jun 30, 2019 · 35 commits to master since this release

PuffinPlot 1.4 release notes

The release numbering scheme changed with the 1.4 release: 1.4 is the immediate successor of 1.03.

Installation requirements

  • PuffinPlot now requires Java 8 or higher.

Data manipulation

  • "Discrete to continuous" feature implemented, allowing conversion of discrete suites to continuous suites using a supplementary CSV file containing a sample-to-depth map.
  • Automatic realignment of declination data, allowing reconstruction of a continuous declination record for continuous suites in which the core sections are not azimuthally oriented with respected to each other.
  • Allow user to remove samples outside a specified depth range.
  • Allow user to remove samples with a specified treatment type.


  • RPI calculation implemented, using normalization to ARM, IRM, or magnetic susceptibility.
  • Arason-Levi inclination-only statistics implemented, but currently only accessible via the API, not the GUI.


  • The Jython package is no longer bundled as part of PuffinPlot, dramatically reducing the download size. PuffinPlot still retains Python support: Jython is downloaded and installed automatically if and when it is required.
  • PuffinPlot now supports scripting in JavaScript as well as Python.
  • The user-defined great circle validity check now uses Javascript rather than Python. In practice, this only means a slight change in syntax.
  • Some classes and methods in the PuffinPlot API have been renamed to be clearer and more descriptive. This has no effect on users who only use the graphical interface, but scripts written for older PuffinPlot versions may have to be updated to work with the new API.

User interface

  • Files can now be opened by dragging them to the main window.
  • Current suite name and "unsaved" indicator added to the title bar.
  • When saving files, PuffinPlot now defaults to the last-used folder.
  • Status bar added to main window. When the mouse pointer is over a data point representing a demagnetization step, the status bar shows details of this step.
  • The "Edit" menu has been divided into more submenus to more conveniently accommodate the newly added functions.

Graphing and data display

  • Per-sample Fisher statistics are now shown in the sample parameters legend.
  • R parameter now shown to 4 decimal places in site and suite parameter tables.

Data import

  • PuffinPlot can now import the text-based PMD format developed by R. Enkin and supported by several palaeomagnetic programs including PMGSC, Paleomac, and Remasoft.
  • PuffinPlot can now import the JR6 format developed by AGICO and supported by programs including REMA6W, Remasoft, and Paleomac.
  • When importing from a custom file format, PuffinPlot now sets default values for the sample and formation corrections if these are not specified in the file.
  • When importing AMS data from an Agico ASC file, PuffinPlot can now read a formation correction from the file. All possible orientation conventions are now supported on ASC file import; if necessary, orientations are converted to PuffinPlot's conventions using the orientation parameters stored in the file. Optionally, existing sample and formation corrections can be overwritten with values read from the ASC file.
  • Import from Caltech (CIT) files has been improved: demagnetization levels for thermal treatment are now read correctly, as is the "NRM" treatment code.

Data export

  • Degree signs in exported data replaced with "deg", to accommodate software that has trouble with non-ASCII character sets.
  • Precision of exported parameters increased to four decimal places.
  • PuffinPlot can now export a bundle containing both data and a processing script, allowing analyses to be reproduced automatically.
  • In exported site data, field strengths for minimum and maximum great-circle steps are written in millitesla rather than tesla.

Miscellaneous bug fixes

  • Custom flags and notes are now included in exported sample data.
  • PDF export no longer produces an extra page.
  • Display is now updated automatically when sites are edited.
  • Formatting of PCA equations in exported CSV files is now locale-independent, so will always use "." rather than "," as the decimal separator.
  • Custom file import used to ignore the sample volume field; it now makes use of it if present, and defaults to a volume of 1 cm³ if it is not present.
  • In demagnetization / intensity plots with AF treatment type, data points for magnetic susceptibility measurements (if present) could sometimes be plotted with an incorrect x position. This has now been corrected.

Developer notes

  • The build process now uses the Ivy dependency manager to download required libraries automatically.
  • Several hundred unit tests have been added, mainly for the data and calculation classes. This helps to verify the correctness of PuffinPlot's data processing, and to avoid the introduction of bugs during future development.
  • PuffinPlot's version control has been migrated from Mercurcial to Git, and the main repository from Bitbucket to GitHub. (The Bitbucket repository has been retained as a mirror.)
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