Re: [R] Problem storing lm() model in a list

2010-12-05 Thread Harold Pimentel
Hi Tal, That is correct. In the code, I actually call the same exact data.frame that was used to create the object. I understand I can call predict() without a data.frame to get this result, but I would like to predict other datasets as well. Thanks, Harold On Dec 5, 2010, at 7:18 AM, Tal

Re: [R] Problem storing lm() model in a list

2010-12-05 Thread William Dunlap
nlap tibco.com > -Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Harold Pimentel > Sent: Friday, December 03, 2010 11:31 PM > To: r-help@r-project.org > Subject: [R] Problem storing lm() model in a list > >

Re: [R] Problem storing lm() model in a list

2010-12-05 Thread Tal Galili
Hi Harold, I think the error stems from the data.frame you are entering into the predict function. Your data.frame must have the EXACT column name as the one used for the creation of the model object. Is that the case in your code? Best, Tal Contact Details:--

[R] Problem storing lm() model in a list

2010-12-04 Thread Harold Pimentel
Hi all, I recently wrote some code to store a number of polynomial models in a list and return this list. The model is returned fine, but when I make a subsequent call to predict(), I have an error. The code for polyModel selection is listed at the end of the email. Here is an example of the er