inst/knitr_tests/knitr.md

In histry: Enhanced Command History Tracking for R Sessions and Dynamic Documents

A minimal R Markdown example

A quote:

Markdown is not LaTeX.

To compile me, run this in R:

library(knitr)
knit('001-minimal.Rmd')

See output here.

code chunks

A paragraph here. A code chunk below (remember the three backticks):

library(histry)

## Loading required package: evaluate

1+1

## [1] 2

.4-.7+.3 # what? it is not zero!

## [1] 5.551115e-17

graphics

It is easy.

plot(1:10)

hist(rnorm(1000))

inline code

Yes I know the value of pi is 3.1415927, and 2 times pi is 6.2831853.

math

Sigh. You cannot live without math equations. OK, here we go: $\alpha+\beta=\gamma$. Note this is not supported by native markdown. You probably want to try RStudio, or at least the R package markdown, or the function knitr::knit2html().

nested code chunks

You can write code within other elements, e.g. a list

1. foo is good

   r strsplit('hello indented world', ' ')[[1]]

   ```

   [1] "hello" "indented" "world"

   ``` 2. bar is better

Or inside blockquotes:

Here is a quote, followed by a code chunk:

r x = 1:10 rev(x^2)

```

[1] 100 81 64 49 36 25 16 9 4 1

```

conclusion

if(exists("histropts"))
    histropts$history$exprs

## [[1]]
## 1 + 1
## 
## [[2]]
## 0.4 - 0.7 + 0.3
## 
## [[3]]
## plot(1:10)
## 
## [[4]]
## hist(rnorm(1000))
## 
## [[5]]
## strsplit("hello indented world", " ")[[1]]
## 
## [[6]]
## x = 1:10
## 
## [[7]]
## rev(x^2)

Nothing fancy. You are ready to go. When you become picky, go to the knitr website.

histry documentation built on May 2, 2019, 8:51 a.m.