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Then try it on an example file that contains a weighted mix of Earth's orbital eccentricity, obliquity and climatic precession.
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A prototype (alpha) version of this tool via a WebApp is available at https://paloz.marum.de/hpNaffWeb/index.html Please drag and drop a tab-separated textfile onto the area, adjust the time/depth step, and press compute. |
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Usage:
% ./hpnaff -v
Welcome to hpNAFF Analysis. ©2015-2021 Heiko Pälike. 3rd party licenses: see --licenses option
Please provide exactly one file name argument
Usage: hpnaff [options] file
file format: tab separated columns, data must be equidistantly spaced. Instead of file can specify '-' for stdin.
-h, --help:
Displays help message.
-r, --fracRMSChangeLimit:
fracRMSChangeLimit. Default: 0.000002
-f, --fracFreqAccuracyLimit:
fracFreqAccuracyLimit. Default: 0.00000001
-m, --maxFrequencies:
maxFrequencies. Default: 30
-c, --freqCycleLimit:
freqCycleLimit. Default: 100
-l, --lowerFreqLimit:
lowerFreqLimit. Default: 0.0
-u, --upperFreqLimit:
upperFreqLimit. Default: 0.5 (NYQUIST)
-d, --detrendingOrder:
Order for polynomial detrending. 0 removes DC only. >0 removes a polynomial fit. Default: not set
-dC, --detrendChunks:
Option to apply detrending (-d) to individual chunks. Default: false
-fAL, --filterAbscissaLower:
filter on Abscissa (x-axis) data greater or equal than value specified.
-fAU, --filterAbscissaUpper:
filter on Abscissa (x-axis) data lesser or equal than value specified.
-s, --chunkSize:
Split the input file into chunks of this size. Default: not set, no chunking
-w, --window_offsets:
Specify windowing offset for evolutive analysis. Default: chunkSize if set, or None.
-z, --columnSeparator:
Use this as columns separtor for input file instead of default tab \t. Default: \t
-k, --skipHeaderLines:
Specify number of (header)lines to be skipped. Default: 0
-n, --decimate:
Specify decimation of input data. Default: 1 (take every value)
-a, --abscissaColumn:
Specify column number for abscissa (time or depth). Default: 1
-o, --ordinateColumn:
Specify column number for ordinate (data). Default: 2
-C, --complex:
Compute spectra for complex input. Default: false. If true, by default takes values from abscissa column + 1.
-Co, --ComplexOrdinateColumn:
Specify column number for ordinate (data), complex part. Default: 3 (if C option used)
-t, --deltaT:
Specify time/depth offset between data. Default: 1.0
-x, --ratios:
Compute and output frequency ratio matrix. Default: false.
--ratio_list:
If ratio_option is set, provides comma separated list of frequency ratios to highlight in output.
--output_detrended_data:
Output detrended data to this filename. Not implemented yet.
--version:
Shows current version and build of this software
-v, --verbose:
Print verbose messages. Specify multiple times to increase verbosity.
--references:
Shows references to papers and sources.
--licenses:
Shows licenses of code components used in this software.
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