Interactive nonlinear regression
a graphical user interface to the
and uses the same input arguments. The interface displays plots of
the fitted response against each predictor, with the other predictors
held fixed. The fixed values are in the text boxes below each predictor
axis. Change the fixed values by typing in a new value or by dragging
the vertical lines in the plots to new positions. When you change
the value of a predictor, all plots update to display the model at
the new point in predictor space. Dashed red curves show 95% simultaneous
confidence bands for the function.
confidence bands. These are simultaneous confidence bounds for the
function value. Using the Bounds menu you
can switch between simultaneous and non-simultaneous bounds, and between
bounds on the function and bounds for predicting a new observation.
the plots using the character matrix
the predictors and the character vector
The data in
reaction.mat are partial pressures
of three chemical reactants and the corresponding reaction rates.
the nonlinear Hougen-Watson model for reaction rates. The following
fits the model to the data:
load reaction nlintool(reactants,rate,@hougen,beta,0.01,xn,yn)