Interpolation is a method of estimating values between known data points. Use interpolation to smooth observed data, fill in missing data, and make predictions. Curve Fitting Toolbox™ functions allow you to perform interpolation by fitting a curve or surface to the data. For more information, see About Interpolation Methods.
To fit an interpolating curve or surface, use the Curve Fitting app. Fit an
interpolating curve or surface at the command line by using the fit function. For
information on choosing an interpolant fit, see Selecting an Interpolant Fit.
| Curve Fitting | Fit curves and surfaces to data |
excludedata | Exclude data from fit |
fit | Fit curve or surface to data |
fittype | Fit type for curve and surface fitting |
fitoptions | Create or modify fit options object |
get | Get fit options structure property names and values |
set | Assign values in fit options structure |
feval | Evaluate cfit, sfit, or
fittype object |
prepareCurveData | Prepare data inputs for curve fitting |
prepareSurfaceData | Prepare data inputs for surface fitting |
Fit interpolant models in Curve Fitting app or with
the fit function.
Interpolation methods for estimating values between known data points for curves and surfaces.
Nonparametric fitting to create smooth curves or surfaces through your data with interpolants and smoothing splines.