Multivariate Data Analysis Using PC‑ORD

Short-courses on analyzing species community data, demonstrated using the PC‑ORD software package.

Upcoming Trainings:

    • Live webinar 10-12 + 13-15 Eastern Daylight Time, 8-12 April 2019
    • Live webinar on Eastern Daylight Time, September 2019 if requested
    • Live webinar 10-12 + 13-15 Eastern Standard Time, November 2019
    • Live webinar 10-12 + 13-15 Eastern Standard Time, November 2020

    IMPORTANT:  I will be on sabbatical 1/20-10/20 so NO webinars will be offered during that time.

    Note that the registration deadline is usually 2 weeks in advance of a course to allow for sufficient shipping time for the required book.  Visit the Workshops or Webinars pages for more details.

    About the Trainings

    Workshops for novices in the use of PC‑ORD and in multivariate analyses in general have been developed to provide training in three areas:

    1. a 10-step analysis process for defensible analysis and interpretation
    2. the PC‑ORD software (through version 7), to understand how to use these tools properly
    3. multivariate community analyses, to know what tools are available and generally what they do


    Tools are introduced, explained, and demonstrated in the order in which you would use them while conducting an analysis. Topics include:

    • importing, screening, and restructuring your data prior to analysis
    • exploring and preparing the data for analysis and selecting the appropriate tools
    • guided ordination tools (weighted averaging, polar ordination, CCA, RDA, fuzzy set ordination)
    • free ordination tools (PCA, NMS)
    • classification tools (cluster analysis, two-way cluster analysis)
    • group-testing tools (MRPP, PerMANOVA, Indicator Species Analysis)
    • association assessment tools (Mantel Test, Fourth Corner Analysis)
    • interpretation, manipulation, and communication of graphs

    Training Options

    • Workshops allow you to attend in person, providing the opportunity to make inquiries about your own data and analyses.

    • Webinars allow you to attend via the Internet, eliminating travel costs, but are only available if you have high bandwidth.


    Trainings are taught by Dr. JeriLynn Peck, who studied with the author of the software (Dr. Bruce McCune) at Oregon State University and has been offering workshops since 1997. Dr. Eric K. Zenner, with a background in applied univariate statistics, sometimes provides assistance.


    Registration fees for most trainings are in the $400-$450 range, with lower fees for students (~$225) and workshop hosts. This fee does not include the software or companion book, which must be ordered from the software distributor. Payment for the workshop fee is accepted in the form of checks made out to "Penn State" or by credit card. Certificates of completion are available upon request.

    About PC‑ORD

    There are few statistical packages specifically designed for community analyses; PC‑ORD brings together in one place many relevant analyses that are otherwise only found scattered among different software packages. Further, because PC‑ORD was written with community ecologists in mind, it includes several procedures and options that are best suited for species data yet found nowhere else. Current trainings cover procedures available in PC‑ORD version 7. Because later versions of PC‑ORD build on previous versions, everything in version 6 will be covered during the training, plus additional features in version 7. Thus, if you have not updated to version 7, everything in versions 5 and 6 will be covered plus there will be some new tools introduced that you don't yet have.

    If you are curious, have questions, or perhaps advice you'd like to share with the PC‑ORD community, consider joining the PC‑ORD GoogleGroup.

    Past Trainings

    Over 70 trainings have been held throughout the United States and abroad. Past workshop hosts have included:

    • Northern Alberta Institute of Technology, Canada
    • Estonian Institute of Life Sciences, Estonia
    • Institute of Technology, Sligo, Ireland
    • National University of Ireland, Galway, Ireland
    • Technical University of Dresden, Germany
    • University of Kaiserslautern, Germany
    • University of Cape Town, South Africa
    • University of Ljubljana, Slovenia
    • University of Alaska International Arctic Research Center, Fairbanks, AK
    • Alaska Pacific University, Anchorage, AK
    • California State University, Sacramento, CA
    • University of Florida, Gainesville, FL
    • Florida Atlantic University, Boca Raton, FL
    • University of Hawaii, Honolulu, HI
    • University of Massachusetts Cranberry Biological Station, East Wareham, MA
    • Oregon State University, Corvallis, OR
    • Antioch New England Graduate School, Keene, NH
    • Clemson State University, Clemson, SC
    • Universidad del Turabo, Gurabo, Puerto Rico
    • US Geological Survey, Flagstaff, AZ
    • US Geological Survey, Davis, CA
    • USGS Utah Water Science Center, Salt Lake City, UT
    • National Oceanic and Atmospheric Administration, Newport, OR
    • US Park Service, Fairbanks, AK
    • US Park Service Santa Monica Mountains NRA, Thousand Oaks, CA
    • US Park Service, Minneapolis, MN
    • Western Fisheries Research Center, Seattle, WA
    • US Bureau of Reclamation, Denver, CO
    • USDA Mt. Hood National Forest, Sandy, OR
    • USDA Forest Service, Davis, CA
    • USDA Forest Service at Research Triangle Park, Raleigh, NC
    • USDA Southern Research Station, Knoxville, TN
    • Aquatic Ecology Limited, Christchurch, New Zealand
    • Missouri Department of Conservation, Columbia, MO
    • NatureServe, Blaine, WA


    Average evaluation scores, based on 2016-2017 participants (N = 80) on a scale from 1 (worst) to 7 (best):

    course:  6.3

    instructor:  6.7