No announcement yet.

Summary: GCVSPL in Matlab 6.0

This topic is closed.
  • Filter
  • Time
  • Show
Clear All
new posts

  • Summary: GCVSPL in Matlab 6.0

    The original posting...

    I am presently implementing GCVSPL for Matlab 6.0 (Windows NT), with
    the source files downloaded from the ISB site (Tony Reina's versions).
    I have modified the mat_files from those used for version 5.1 due to
    the apparent change in memory management by Matlab as outlined in the
    Matlab help files. However, this solution seems to be unstable and
    erratic. While the code will run multiple times in Matlab (sometimes),
    it will often crash out when I attempt to plot any of the smoothed
    data. In addition, the code will only run once when called in Matlab
    from within LabVIEW.

    My assessment is that I may have problems with my gateway modifications!
    Has anyone run across a similar issue when implementing the GCVSPL-code
    in Matlab 6.0 or earlier? Alternatively, has anyone implemented Woltring's
    algorithm in LabVIEW?

    ************************************************** **************************

    Thanks to Ty Hedrick, Trey Crisco and Tony Reina for their replies.

    Ty's build of Tony's code has been running on NT4 and Matlab 6.0 for him
    with no problems. Interestingly, it worked the first time for me, but
    thereafter gave me the same memory errors. (A strange southern hemisphere
    effect perhaps, although Trey reported similar Matlab problems compiling
    other code).

    The smoothing solution: I only wanted to use a quintic spline (e.g. Reinsch,
    1967), and the university had a license for the spline toolbox...."spaps"
    works a treat!

    I remain curious about the memory problem, and any solutions or suggestions
    are most welcome.

    Rachel Skoss

    Department of Human Movement and Exercise Science
    The University of Western Australia
    Crawley, WA, 6009, Australia
    Ph: +61 8 9380 7355
    Fax: +61 8 9380 1039

    To unsubscribe send SIGNOFF BIOMCH-L to
    For information and archives: