selectfit displays the fit specified in a dialog box for the data
selected from the active curve by drawing a lasso. Use the left mouse
button to draw the lasso. Use undofit or rmfit to remove the fit.
The default display settings are defined in the file fitparam.
*** Note: This function is not fully stable.
If you use Matlab >= 7.6, it is encouraged to use
showfit with the "Data Brushing" mode instead of selectfit.
selectfit will be removed in future releases of EzyFit.
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 selectfit.
selectfit(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.
selectfit(F) use the equation defined in the fit structure F.
selectfit(..., 'PropertyName','PropertyValue',...) specifies the
properties of the fit (e.g., fit colors, line width etc.). See the
default values in the file fitparam.
F = selectfit(...) 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, selectfit checks the Y-scale of the current figure to determine
whether Y or LOG(Y) has to be fitted.
Examples
plotsample power
selectfit('power; log');
plotsample poly2
f = selectfit('z(v) = poly3','fitcolor','red','fitlinestyle',':');
editcoeff(f);
See Also
showfit, ezfit, undofit, rmfit, plotsample, SELECTDATA, INTERP1.
Published output in the Help browser
showdemo selectfit