TRPOFILE= transposing the data matrix

To transpose the rows and columns of the data matrix, select Transpose on the Output Files menu or include TRPOFILE= in your control file. Details are given at Transpose file specifications.


TRPOFILE= file name. This is the name of the transposed file.

This operates in association with TRPOTYPE= control characters. This controls what is written to the transposed file.


TRPOFILE=? opens a Browse window


Example 1: You want to "rack" the data in exam12lo.txt and exam12hi.txt, so that each person record contains the ratings from both files:


1. Analyze exam12.txt with data=exam12lo.txt

Transpose the data file only to exam12lod.txt

The "lo" items are now rows


2. Analyze exam12.txt with data=exam12hi.txt

Transpose the data only to exam12hid.txt

The "hi" items are now rows

Transpose the control file only to exam12tran.txt

The person labels are now shown as item labels


3. Analyze exam12tran.txt with data=exam12lod.txt+exam12hid.txt

The columns are the original persons. The rows are all the original items, "lo" and "hi".

Transpose the control and data file to exam12rack.txt

The persons return to the rows.

The columns are now all the original items, "lo" and "hi".


4. Analyze exam12rack.txt with Winsteps. This is the desired control and data file.


Example 2: We want to see if one group of persons have a different response "style" than another group of persons on a 6-category rating scale. To do this,
1. Transpose the Winsteps control-and-data file so that the rows become columns: Winsteps output file menu: Transpose.
2. In the transposed Winsteps control-and-data file,
GROUPS = 12112111.... to match the person groups.
3. Save the transposed file and analyze it with Winsteps.
4. Look at Table 3.2. There will be one rating scale for Group 1 and another rating scale for Group 2.

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Rasch Publications
Rasch Measurement Transactions (free, online) Rasch Measurement research papers (free, online) Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Applying the Rasch Model 3rd. Ed., Bond & Fox Best Test Design, Wright & Stone
Rating Scale Analysis, Wright & Masters Introduction to Rasch Measurement, E. Smith & R. Smith Introduction to Many-Facet Rasch Measurement, Thomas Eckes Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments, George Engelhard, Jr. & Stefanie Wind Statistical Analyses for Language Testers, Rita Green
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Journal of Applied Measurement Rasch models for measurement, David Andrich Constructing Measures, Mark Wilson Rasch Analysis in the Human Sciences, Boone, Stave, Yale
in Spanish: Análisis de Rasch para todos, Agustín Tristán Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez
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Coming Rasch-related Events
April 10-12, 2018, Tues.-Thurs. Rasch Conference: IOMW, New York, NY,
April 13-17, 2018, Fri.-Tues. AERA, New York, NY,
May 22 - 24, 2018, Tues.-Thur. EALTA 2018 pre-conference workshop (Introduction to Rasch measurement using WINSTEPS and FACETS, Thomas Eckes & Frank Weiss-Motz),
May 25 - June 22, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),
June 27 - 29, 2018, Wed.-Fri. Measurement at the Crossroads: History, philosophy and sociology of measurement, Paris, France.,
June 29 - July 27, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps),
July 25 - July 27, 2018, Wed.-Fri. Pacific-Rim Objective Measurement Symposium (PROMS), (Preconference workshops July 23-24, 2018) Fudan University, Shanghai, China "Applying Rasch Measurement in Language Assessment and across the Human Sciences"
Aug. 10 - Sept. 7, 2018, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets),
Sept. 3 - 6, 2018, Mon.-Thurs. IMEKO World Congress, Belfast, Northern Ireland
Oct. 12 - Nov. 9, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),



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