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Speaking Stata: Rowwise

Author

Listed:
  • Nicholas J. Cox

    (Durham University, UK)

Abstract

Stata’s main data model treats observations in rows and variables in columns quite differently, but rowwise problems also arise that require working against the grain. This column shows how to exploit existing functions and egen functions when they exist and apply to such problems. It offers advice on how to build your own loops, egen functions, or programs when needed. Mata provides especially convenient tools for constructing many such functions and programs, centered on putting selected data into matrices and then processing each observation as a separate vector. Two programs, rowsort and rowranks, are formally published with this column.

Suggested Citation

  • Nicholas J. Cox, 2009. "Speaking Stata: Rowwise," Stata Journal, StataCorp LP, vol. 9(1), pages 137-157, March.
    • Handle: RePEc:tsj:stataj:v:9:y:2009:i:1:p:137-157
    as

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    References listed on IDEAS

    as
    1. William Gould, 2005. "Mata Matters: Using views onto the data," Stata Journal, StataCorp LP, vol. 5(4), pages 567-573, December.
    2. Nicholas J. Cox, 2002. "Speaking Stata: How to face lists with fortitude," Stata Journal, StataCorp LP, vol. 2(2), pages 202-222, May.
    3. David Kantor & Nicholas J. Cox, 2005. "Depending on conditions: a tutorial on the cond() function," Stata Journal, StataCorp LP, vol. 5(3), pages 413-420, September.
    4. Nicholas J. Cox & Gary M. Longton, 2008. "Speaking Stata: Distinct observations," Stata Journal, StataCorp LP, vol. 8(4), pages 557-568, December.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Hildenbrand, Andreas & Soviana, Soviana, 2015. "Über die Kriterien bei und die Zufriedenheit mit der Wahl eines Master-Studiengangs am Beispiel der agrarwissenschaftlichen Master-Studiengänge der Justus-Liebig-Universität Gießen," German Journal of Agricultural Economics, Humboldt-Universitaet zu Berlin, Department for Agricultural Economics, vol. 64(01), March.
    2. Hildenbrand, A. & Soviana, S., 2015. "Über die Kriterien bei, die Motive für und die Zufriedenheit mit der Wahl eines Masterstudiengangs am Beispiel der agrarwissenschaftlichen Master- Studiengänge des Justus-Liebig-Universität Gießen," Proceedings “Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V.”, German Association of Agricultural Economists (GEWISOLA), vol. 50, March.

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