Git commit ae93642039bc564f6406504c4380739ea9aee011 by Stefan Gerlach. Committed on 02/07/2016 at 10:13. Pushed by sgerlach into branch 'analysis_playground'.
DFT docu added M +19 -5 doc/index.docbook http://commits.kde.org/labplot/ae93642039bc564f6406504c4380739ea9aee011 diff --git a/doc/index.docbook b/doc/index.docbook index 98f5f22..5585285 100644 --- a/doc/index.docbook +++ b/doc/index.docbook @@ -51,8 +51,8 @@ </copyright> <legalnotice>&FDLNotice;</legalnotice> -<date>2016-06-17</date> -<releaseinfo>3.2.1</releaseinfo> +<date>2016-07-02</date> +<releaseinfo>3.2.2</releaseinfo> <abstract> <para> @@ -88,8 +88,8 @@ Features: <listitem><para>Great variety of editing capabilities for properties of worksheet and its objects</para></listitem> <listitem><para>Cartesian plots, created either from imported or manually created data sets or via mathematical equation</para></listitem> <listitem><para>Definition of mathematical formulas is supported by syntax-highlighting and completion and by the list of thematicaly grouped mathematical and physical constants and functions</para></listitem> -<listitem><para>Analysis of plotted data is supported by many zooming and navigation features</para></listitem> -<listitem><para>Several interpolation, smoothing and Fourier filter methods for filtering data</para></listitem> +<listitem><para>Investigation of plotted data is supported by many zooming and navigation features</para></listitem> +<listitem><para>Several analysis functions and methods for interpolation, smoothing, (nonlinear) fitting, Fourier filter and Fourier transform</para></listitem> <listitem><para>Linear and non-linear fits to data, several fit-models are predefined and custom models with arbitrary number of parameters can be provided</para></listitem> <listitem><para>Datapicker for manual or (semi-)automatic data extraction from imported images containing plots and curves.</para></listitem> </itemizedlist> @@ -838,7 +838,6 @@ The menu is only available when a datapicker object is selected on the <guilabel which can be selected to weight the selected data points depending on their distance. </para> </sect1> - <sect1 id="fitting"> <title>Curve fitting</title> @@ -876,6 +875,21 @@ The menu is only available when a datapicker object is selected on the <guilabel of the data points. </para> </sect1> + + <sect1 id="dft"> + <title>Fourier transform</title> + <para> + To convert a signal from time to frequency domain or to change between other conjugate variables like + position and momentum (k-space) a discrete Fourier transform can be applied. + Following options can be used to suite one needs: + </para> + <itemizedlist> + <listitem><para>window function (Welch, Hann, Hamming, etc.) to avoid leakage effects</para></listitem> + <listitem><para>output (magnitude, amplitude, phase, dB, etc.)</para></listitem> + <listitem><para>one or two sided spectrum with or without shifting</para></listitem> + <listitem><para>x axis scaling to frequency, index or period</para></listitem> + </itemizedlist> + </sect1> </chapter> <chapter id="digitization"> _______________________________________________ kde-doc-english mailing list [email protected] https://mail.kde.org/mailman/listinfo/kde-doc-english
