Changelog Period04 Version 1.2.0

  • Interoperability with applications of the Virtual Observatory:

    In the new version of Period04 the PLASTIC protocol was replaced with the SAMP protocol.

  • Period04 now includes a tool to check for combination frequencies and harmonics:

    You can activate this tool in Menu 'Configure > Fourier Settings'. The acceptable offset in frequency is chosen by the user taking into account the frequency resolution in the given data set.

  • Batch processing introduced

    Since version 1.2.0 Period04 also supports batch processing. So you can start Period04 from the command line and do different operations defined a batch file. The following batch file is an example that shows you the options that can be currently invoked from a batch file:
    import tou data.dat
    #
    # import  
    #
    # file-format string should be composed from the following letters:
    #    t ... time
    #    o ... observed
    #    a ... adjusted
    #    c ... calculated
    #    w ... point weight 
    #    u ... point error
    #    r ... residuals(observed)
    #    R ... residuals(adjusted)
    #    1 ... attribute #1
    #    2 ... attribute #2
    #    3 ... attribute #3
    #    4 ... attribute #4
    #    5 ... weight(attribute #1)
    #    6 ... weight(attribute #2)
    #    7 ... weight(attribute #3)
    #    8 ... weight(attribute #4)
    #    i ... ignore
    #
    # note: 
    #    if you import point errors/weights ('u', 'w') the weights 
    #    will be automatically activated for use in calculations!
    #
    
    fourier 0 nyq o y
    #
    # fourier    
    #         
    #      ... any number
    #        ... any number or 'nyq' (=computes spectrum up to Nyquist freq)
    #      ... choose one of these letters:
    #                o ... observed
    #                a ... adjusted
    #                r ... residuals(observed)
    #                R ... residuals(adjusted)
    #                1 ... spectral window 1
    #                2 ... spectral window 2
    #      ... choose y or n
    #
    
    fit o 1
    fit o 2
    #
    # fit  
    #
    #      ... choose one of these letters:
    #                o ... observed
    #                a ... adjusted
    #      ... calculation mode
    #     	     	 1 ... improve amplitudes & phases
    #     	     	 2 ... improve frequencies, amplitudes & phases
    #
    
    # find and prewhiten second frequency:
    fourier 0 nyq r y
    fit o 1
    fit o 2
    
    # find and prewhiten third frequency:
    fourier 0 nyq r y
    fit o 1
    fit o 2
    

    To start Period04 using a batch file 'batch.bat', type
    period04 -batch=batch.bat
    More options will become available upon request.