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showfit
Show the fit for the active curve.
Description `

    showfit displays the fit specified in a dialog box for the active
    curve. Use undofit or rmfit to remove the fit. The display settings are
    defined in the file fitparam.

    By default, the first curve in the active figure is used (see fitparam
    to change this default behavior). To fit another curve, select it
    before calling showfit. Use selectfit to fit only a part of the data
    from the selected curve.

    showfit(FUN) specifies the fitting string FUN. FUN may be either a
    default fit (eg, 'exp', 'power'), a user-defined fit (see editfit),
    or directly a fit equation (eg, 'c+a*exp(-x/x0)'). See ezfit for the
    syntax of FUN. FUN may also be any valid interpolation method string
    (eg 'spline', 'cubic'... excepted 'linear'). See INTERP1 for the valid
    interpolation methods.

    showfit(F) displays the fit F defined from the fit structure returned
    by ezfit. See ezfit for the definition of F.

    showfit(..., 'PropertyName','PropertyValue',...) specifies the
    properties of the fit (e.g., fit colors, line width etc.). See the
    default values in the file fitparam.

    F = showfit(...) also returns the fit structure F. F has the same
    content as the fit structure returned by ezfit (see ezfit for details),
    and also contains a handle to the equation box and to the curve.

    Note that if the option 'lin' or 'log' is not specified in the string
    FUN, showfit checks the Y-scale to know if Y or LOG(Y) has to be
    fitted.

Examples

       type 'plotsample' and follow the instructions.

       plotsample power
       showfit('c*x^n; log');

       plotsample hist
       f = ezfit('gauss');
       showfit(f,'fitcolor','red','fitlinewidth',2);

       plotsample poly2
       f = showfit('z(v) = poly3','dispfitlegend','on');
       editcoeff(f);

See Also

    selectfit, ezfit, undofit, rmfit, plotsample, pickdata, INTERP1.

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