fetch_var: Fetches values from a melted data frame.

In peterhurford/surveytools: Surveytools is a collection of R functions that, together, create a lightweight and modern workflow for analyzing survey data.

Description

Fetches values from a melted data frame.

Usage

fetch_var(var_name, compare = "==", select = NULL, by_id = -1, col = 3,
  na.rm = TRUE, data = get_data())

Arguments

var_name	character. The name of the variable within the data frame to select values from.
compare	character. An operator to compare to the select parameter, if chosen (e.g., "==", ">", ">=", etc.). == by default if select is chosen.
select	character. Returns only values that match this value. Useful for counting. Off by default. the ids, or 'all' to grab the entire data frame for that variable.
by_id	character. The ID of a particular person, if you only want data from that one person. Off by default.
na.rm	logical. Remove all the NA, "N/A", or "" values. On by default.
data.	The data to grap values from. This is assumed to be a three column melted dataframe, using reshape2 <http://cran.r-project.org/web/packages/reshape2/index.html>. The first column should contain IDs, the second column should contain variable names, and the third column should contain variable values.
col.	3 (default) to grap values, 2 to grab the variable name, 1 to grab

peterhurford/surveytools documentation built on May 25, 2019, 1:51 a.m.