% PURPOSE: An example of using pftest%          to print VAR model F-test%          for Granger-causality                                               %---------------------------------------------------% USAGE: pftest_d%---------------------------------------------------load test.dat; % a test data set containing               % monthly mining employment for               % il,in,ky,mi,oh,pa,tn,wv% data covers 1982,1 to 1996,5y = test;     nlag = 2;  % number of lags in var-model% estimate the modelresults = var(y,nlag);vnames =  ['illinois     ',           'indiana      ',               'kentucky     ',               'michigan     ',               'ohio         ',               'pennsylvania ',               'tennessee    ',               'west virginia'];     pftest(results,vnames);