Markdowndemo

My first knitr Document

library(knitr)

## Warning: package 'knitr' was built under R version 3.2.2

library(datasets) 
library(ggplot2)

## Warning: package 'ggplot2' was built under R version 3.2.2

str(mtcars)

## 'data.frame':    32 obs. of  11 variables:
##  $ mpg : num  21 21 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 ...
##  $ cyl : num  6 6 4 6 8 6 8 4 4 6 ...
##  $ disp: num  160 160 108 258 360 ...
##  $ hp  : num  110 110 93 110 175 105 245 62 95 123 ...
##  $ drat: num  3.9 3.9 3.85 3.08 3.15 2.76 3.21 3.69 3.92 3.92 ...
##  $ wt  : num  2.62 2.88 2.32 3.21 3.44 ...
##  $ qsec: num  16.5 17 18.6 19.4 17 ...
##  $ vs  : num  0 0 1 1 0 1 0 1 1 1 ...
##  $ am  : num  1 1 1 0 0 0 0 0 0 0 ...
##  $ gear: num  4 4 4 3 3 3 3 4 4 4 ...
##  $ carb: num  4 4 1 1 2 1 4 2 2 4 ...

#Ensure you have installed knitr and ggplot2 before hand

1. Introduction

Let’s try some quick markdown

## [1] 20.09062

2. Hands-on suppressing code or output. Use the code chunk in the Introduction Section to demonstrate this. Click on the Knit HTML button to produce your very first HTML document from a markdown file.

A.How do we suppress or prevent the code snippet from showing in the knitted document?

B.How do we suppress messages and warning from the R code?

C.How do we suppress warning messages, warning and output from the R code?

D.How do we perform in line computation?

E.How do we format a dataframe or matrix into a table format?