Software for contour maps of moving least-squares spectra

S. Nintcheu-Fata, Germaine G Cornelissen-Guillaume, G. Katinas, F. Halberg, B. Fišer, J. Siegelová, M. Mašek, J. Dušek

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


This paper reports on software developed to compute least-squares spectra over a specified interval. This approach facilitates the viewing of a changing time structure in non-stationary time series, smaller than the observation span. The programme is illustrated by a case of solar activity, gauged by yearly Wolf numbers, for the 1700-1999 span that shows the presence of a very unstable component with a period of around-100 years and an about-11-year solar cycle. This method, although demostrated here on a geophysical example, has a broad scope of applications in biology and medicine.

Original languageEnglish (US)
Pages (from-to)279-284
Number of pages6
JournalScripta Medica Facultatis Medicae Universitatis Brunensis Masarykianae
Issue number5
StatePublished - Dec 1 2003


  • Least-squares spectra
  • Rhythm analysis
  • Software


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