The BrailleR package

Introduction

This vignette briefly demonstrates the functions of the BrailleR package. It is far from complete as it is currently a work in progress file for testing various aspects of vignette creation using the knitr package.

Histograms

The first and most commonly used example of the value of the BrailleR package to a blind user is the creation of a histogram.

x=rnorm(1000)
VI(hist(x))

## This is a histogram, with the title: Histogram of x 
##  x is marked on the x-axis.
## There are a total of 1000 elements for this variable.
## It has 13 bins with equal widths, starting at -3.5 and ending at 3 .
## The mids and counts for the bins are:
## mid = -3.25  count = 2 
## mid = -2.75  count = 3 
## mid = -2.25  count = 16 
## mid = -1.75  count = 47 
## mid = -1.25  count = 94 
## mid = -0.75  count = 144 
## mid = -0.25  count = 207 
## mid = 0.25  count = 180 
## mid = 0.75  count = 159 
## mid = 1.25  count = 88 
## mid = 1.75  count = 34 
## mid = 2.25  count = 22 
## mid = 2.75  count = 4

The mean \(\mu\) of this random sample is -0.0192 which of course should be near enough to zero.