[R] glm.fit: fitted probabilities numerically 0 or 1 occurred for a continuous variable?

I have gotten the this error before: "glm.fit: fitted probabilities numerically 0 or 1 occurred" and the problem was usually solved by combining one or more categories were there were no observations. I am now having this error show up for a variable that is continuous (not categorical). What co

[R] Package 'effects' plotting allEffects question

Is there a way to plot just the response function for one variable, instead of every variable on the same plot? my model has 13 variables and the plot produces a graph for each of these on the same plot, which is useless. -- View this message in context: http://r.789695.n4.nabble.com/Package-e

[R] Help with factor levels and reference level

I have a variable coded in Stata as follows: ** *gen sat_pm25cat_=. replace sat_pm25cat_= 1 if (sat_pm25>=4 & sat_pm25<=7.1 & sat_pm25!=.) replace sat_pm25cat_= 2 if (sat_pm25>=7.1 & sat_pm25<=10) replace sat_pm25cat_= 3 if (sat_pm25>=10.1 & sat_pm25<=11.3) replace sat_pm25cat_= 4 if (sat_pm25>=11.

[R] Package 'effects' plotting allEffects question

Is there a way to plot just the response function for one variable, instead of every variable on the same plot? my model has 13 variables and the plot produces a graph for each of these on the same plot, which is useless. -- View this message in context: http://r.789695.n4.nabble.com/Package-e