Hello José, This is a much convenient way of looking at the components!
Thanks very much! Cheers, Rebecca -----Original Message----- From: Jose Iparraguirre [mailto:jose.iparragui...@ageuk.org.uk] Sent: Friday, March 22, 2013 11:25 AM To: Yuan, Rebecca; R help Subject: RE: error while extracting the p-value from adf.test Yes, it should be $p.value Have a look at the components here: > names(ht) José José Iparraguirre Chief Economist Age UK T 020 303 31482 E jose.iparragui...@ageuk.org.uk Twitter @jose.iparraguirre@ageuk Tavis House, 1- 6 Tavistock Square London, WC1H 9NB www.ageuk.org.uk | ageukblog.org.uk | @ageukcampaigns -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Yuan, Rebecca Sent: 22 March 2013 14:03 To: R help Subject: [R] error while extracting the p-value from adf.test Hello all, I tried to extract the p-value from adf.test in tseries; however, I got the error message such as > ht=adf.test(list.var$aa) > ht$p-value Error in ht$p - value : non-numeric argument to binary operator > ht Augmented Dickey-Fuller Test data: list.var$aa Dickey-Fuller = -2.3147, Lag order = 4, p-value = 0.4461 alternative hypothesis: stationary > ht$data [1] "list.var$aa" > ht$p-value Error in ht$p - value : non-numeric argument to binary operator > ht$p NULL I do not have problem extracting the data in ht, but why not p-value? 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