I have end of semester teaching evaluation data of the following form: > head(evaluations) Course Prefix Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 1 2330301 2 4 3 3 3 4 4 1 2 5 4 1 1 1 1 2 2330301 2 3 3 3 3 3 5 1 2 5 8 1 1 1 1 3 2330301 2 4 4 3 3 4 4 2 2 5 9 1 1 1 1 4 2330301 2 2 1 1 3 4 5 1 2 5 8 1 1 1 1 5 2330301 2 4 3 4 4 4 3 1 3 5 8 1 3 1 1 6 2330301 2 3 4 2 2 4 2 2 2 5 9 1 1 1 1
There are 90 levels, representing each of the courses taught in my college. I have figured out how to process by level using: # Read in raw data files setwd("College\\Evals") evaluations <- read.csv(file="spring2012.csv",head=TRUE,sep=",") # Determine and display factors courses = factor(evaluations$Course) table(courses) # Get summary statistics by factor by(evaluations, courses, summary) What I would like to do is create a separate printed page for each course so that I can hand them out to the faculty. I would like each page to contain a title, the number of respondents, some summary statistics, and a histogram. I need to be able to use a second dataframe containing the course (id), course title, and faculty member name. Despite a few hours of searching on Google and pecking away at the keyboard, I have been unable to figure out how to replace "summary" in the above "by" statement with a function that will accept and process the necessary data. Am I even on the right track? Any pointers will be greatly appreciated, this is my first foray into R. Tom -- Thomas A. Ottaway, Ph.D. Interim Dean Professor of Computer Information Systems College of Business Idaho State University 921 South 8th Street Pocatello, ID 83209-8020 (208) 282-2601 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.