The PAST4 software package contains everything you need to start your dendrochronological research.

PAST4 is a fully Microsoft Windows compliant application, supporting all 32 and 64 bit Microsoft operating systems (Windows 2000, Windows XP, Windows Vista and Windows 7).

The PAST software was the first Windows based graphical software package for dendrochronological research purposes. The current version is the result of 12 years of continuous improvements based on customer demands.

Fast statistical tests together with the constant availability of graphical information (3-way graphs allow the simultaneous display of YT-, Stacked- and Bar Graphs) present a unique concept for synchronization and chronology building.

The hierarchical group concept allows for the easy handling of huge amounts of records.

Dynamic mean values are a  valuable aid when working with problematic samples. Mean values can easily be altered, combined or enhanced with simple mouse operations.

The newly designed fully customizable Project management window holds together all project based information and has built in sorting and editing functions.

By using XML for project file storage PAST4 offers a unique total recall system for project handling. Multiple records and mean values are stored in monolithic files that can easily be copied, pasted and transported in the Internet.

Various import and export filters to the most important file formats used in dendrochronology (Format Heidelberg, Format Hemmenhofen, Tucson, Catras, ITRDB) allow data handling at a high level.

PAST4.5 is able to process the new VDAQ project files created with the VIASDAQ data aquisition software and OSM4 project files.  

If you use different file formats that you would like to see processed in PAST4 please contact us. The development of the program is in constant progress!

Generating graphical data for publishing purposes is made easy with the built in printing function or by copying/pasting screen contents as vector graphs. For example, placing scalable graphs into a Word file is a simple copy/paste process.

PAST4 supports Windows EMF files, the Microsoft standard Vector based file format that will be understood by most if not all vector based graphical software packages.

PAST4 has built in support for the VIAS TimeTable and VideoTimeTable measuring device series

Compatibility note
RS-232 based ParSer interfaces are no longer supported in PAST 4.5. If you use a RS-232 based ParSer interface you will need to upgrade your measuring device to a VIAS µParSer interface) in order to use your hardware with PAST4.5.