search for: vplot

A general problem i run into, i know there must be a simple solution. I like to create a variable by appending a 1 for example, (i need to loop later on from 1 to X, thus the reason for this). So i assign the variable vplot with this value, however it has quotes and when i use it in a barplot, it throws an error. but the tcenter$X1 does exist, its an element of a data frame. So if i type directly it works, but i like to do this programmatically, as i have to generate a bunch of these plots and need to loop. So how...

I don't know much about GLM in general or glm in R. Can anyone tell me how to do the following (in R or some other stat system) or refer me to a textbook discussion? Two factor ANOVA repeated measures design. Each subject gives a percent correct. I am assuming the correct way to proceed is to fit a generalized linear model with binomial responses and logistic link. But I have not found a