Description
B = mnrfit(X,Y) returns a matrix, B, of coefficient estimates for a multinomial logistic regression of the nominal responses in Y on the predictors in X.
load fisheriris
% The column vector, species, consists of iris flowers of three different species, setosa, versicolor, virginica. The double matrix meas consists of four types of measurements on the flowers, the length and width of sepals and petals in centimeters, respectively.
% Define the nominal response variable using a categorical array.
sp = categorical(species);
% Fit a multinomial regression model to predict the species using the measurements.
[B,dev,stats] = mnrfit(meas,sp);
B
