Curve Fitting Toolbox

Importing, Viewing, and Preprocessing Data

This chapter describes how to import, view, and preprocess data with the Curve Fitting Toolbox. You import data with the Data GUI, and view data graphically as a scatter plot using the Curve Fitting Tool. The main preprocessing steps are smoothing, and excluding and sectioning data. You smooth data with the Data GUI, and exclude and section data with the Exclude GUI. The sections are as follows.

Importing Data Sets	Select workspace variables that compose the data set, list all imported and generated data sets, and delete one or more data sets.
Viewing Data	View the data graphically as a scatter plot.
Smoothing Data	Reduce noise in a data set using moving average filtering, lowess or robust lowess, loess or robust loess, or Savitzky-Golay filtering.
Excluding and Sectioning Data	Mark individual data points (outliers) to be excluded from a fit, or mark a range of data points (sectioning) to be excluded from a fit.
Additional Preprocessing Steps	Additional preprocessing steps not available through the Data GUI, such as transforming the response data and removing `Inf`s, `NaN`s, and outliers from a data set.
Selected Bibliography	Resources for additional information.

Saving Your Work Importing Data Sets