# cutoff: A function to calculate thresholds of cumulative sums in a... In eeptools: Convenience Functions for Education Data

## Description

This function tells us how far we have to go before reaching a cutoff in a variable by sorting the vector, then finding how far to go. Note that the cutoff is expressed in percentage terms (fixed cumulative sum)

## Usage

 `1` ```cutoff(x, cutoff, na.rm = TRUE) ```

## Arguments

 `x` a numeric vector, missing values are allowed `cutoff` a user defined numeric value to stop the cutoff specified as a proportion 0 to 1 `na.rm` logical, should missing values be excluded?

## Details

Calculates the distance through a numeric vector before a certain proportion of the sum is reached by sorting the vector and calculating the cumulative proportion of each element

## Value

An integer for the minimum number of elements necessary to reach cutoff

Jared E. Knowles

## Examples

 ```1 2 3``` ```# for vector a <- rnorm(100, mean=6, sd=1) cutoff(a, .7) #return minimum number of elements to account 70 percent of total ```

eeptools documentation built on May 3, 2020, 1:05 a.m.