[R] "/" operator in model formula

;m not sure this is at all clear, but I am happy to try to clarify it. Thanks much in advance, Matt Landis R. Matthew Landis, Ph.D. Dept. Biology Middlebury College Middlebury VT 05753 [[alternative HTML version deleted]] __ [EMAI

[R] predicted values from rq

Dear statistics and R experts, I'm reposting the following message - I orginally posted it last Friday, and generated exactly no response. I assume it got lost over the weekend (either that or it is just unbelievably obvious!). I would like to plot the predicted values from a quantile regressi

[R] interpretation of contr.poly coefficients?

Hello everyone, I am trying to calculate predicted values for a fit from rq (quantreg; see my earlier post), but I am having trouble understanding how to interpret the coefficents in the summary.rq table generated by contr.poly. This probably applies equally to lm objects as well. I've checked

[R] predicted values from rq

t.rq doesn't turn up anything. Thanks for any help, Matt Landis R. Matthew Landis, Ph.D. Dept. Biology Middlebury College Middlebury VT 05753 tel. 802/443.3484 fax.802/443.2072 [[alternative HTML version deleted]] __ [E