[R] Variable Combinations in Regression

2010-01-08 Thread Richardson, Patrick
Let's say I have 8 variables and I want to generate all combinations of those variables (In pairs, threes fours, etc) to run in multiple linear regression. Is there a built-in function to do that in R? Or at a minimum, how could I take those variables and generate all possible combinations.

Re: [R] Variable Combinations in Regression

2010-01-08 Thread Whit Armstrong
?expand.grid On Fri, Jan 8, 2010 at 3:26 PM, Richardson, Patrick patrick.richard...@vai.org wrote: Let's say I have 8 variables and I want to generate all combinations of those variables (In pairs, threes fours, etc) to run in multiple linear regression. Is there a built-in function to do

Re: [R] Variable Combinations in Regression

2010-01-08 Thread David Winsemius
On Jan 8, 2010, at 3:26 PM, Richardson, Patrick wrote: Let's say I have 8 variables and I want to generate all combinations of those variables (In pairs, threes fours, etc) to run in multiple linear regression. Is there a built-in function to do that in R? The formula syntax allows that.