which.q | R Documentation |
In many survey systems, sub-questions take the form "Q1_a", "Q1_b", with the main question and sub-question separated by an underscore. This function conveniently returns column index of matches found for a question id in a surveydata object. It does this by using the pattern attribute of the surveydata
object.
which.q(x, Q, ptn = pattern(x))
x |
Object to coerce to surveydata |
Q |
Character string with question number, e.g. "Q2" |
ptn |
A list with two elements, |
questions()
to return all questions matching the pattern()
Other Question functions:
question_text_common()
,
question_text_unique()
,
question_text()
,
questions()
,
split_common_unique()
# Basic operations on a surveydata object, illustrated with the example dataset membersurvey class(membersurvey) questions(membersurvey) which.q(membersurvey, "Q1") which.q(membersurvey, "Q3") which.q(membersurvey, c("Q1", "Q3")) question_text(membersurvey, "Q3") question_text_unique(membersurvey, "Q3") question_text_common(membersurvey, "Q3") # Extracting columns from a surveydata object head(membersurvey[, "Q1"]) head(membersurvey["Q1"]) head(membersurvey[, "Q3"]) head(membersurvey[, c("Q1", "Q3")]) # Note that the result is always a surveydata object, even if only one column is extracted head(membersurvey[, "id"]) str(membersurvey[, "id"])
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.