IDEAS home Printed from https://ideas.repec.org/c/boc/bocode/s458213.html
 

FTOOLS: Stata module to provide alternatives to common Stata commands optimized for large datasets

Author

Listed:
  • Sergio Correia

    (Board of Governors of the Federal Reserve System)

Programming Language

Stata

Abstract

ftools consists of a Mata file and several Stata commands: The Mata file creates identifiers (factors) from variables by using hash functions instead of sorting the data, so it runs in time O(N) and not in O(N log N). The Stata commands exploit this to avoid sort operations, at the cost of being slower for small datasets (mainly because of the cost involved in moving data from Stata to Mata). Implemented commands are fcollapse, fegen group, and fsort. Note that most of the capabilities of levels and contract are already supported by these commands. Possible commands include more egen functions and merge and reshape alternatives.

Suggested Citation

  • Sergio Correia, 2016. "FTOOLS: Stata module to provide alternatives to common Stata commands optimized for large datasets," Statistical Software Components S458213, Boston College Department of Economics, revised 21 Aug 2023.
    • Handle: RePEc:boc:bocode:s458213
    Note: This module should be installed from within Stata by typing "ssc install ftools". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fcollapse.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fcollapse.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fegen.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fegen_group.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fegen.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fisid.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fisid.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/flevelsof.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/flevelsof.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fmerge.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fmerge.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/freshape.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fsort.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fsort.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftab.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/j/join.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/j/join.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/l/local_inlist.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/l/local_inlist.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fcollapse_functions.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/fcollapse_main.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_type_aliases.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_common.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_hash1.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_main.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_experimental.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_plugin.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/f/ftools_type_aliases.mata
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_compile_mata.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_expand_varlist.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_fvstrip.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_fvstrip.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_fvunab.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_get_version.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_parse_absvars.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_parse_varlist.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_parse_vce.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_add_comma.ado
    File Function: program code
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:boc:bocode:s458213. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Christopher F Baum (email available below). General contact details of provider: https://edirc.repec.org/data/debocus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.