Hello R Markdown!

1. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00
fit <- lm(dist ~ speed, data = cars)
fit
## 
## Call:
## lm(formula = dist ~ speed, data = cars)
## 
## Coefficients:
## (Intercept)        speed  
##     -17.579        3.932

2. Including Plots

You can also embed plots. See Figure 1 for example:

par(mar = c(0, 1, 0, 1))
pie(
  c(280, 60, 20),
  c('Sky', 'Sunny side of pyramid', 'Shady side of pyramid'),
  col = c('#0292D8', '#F7EA39', '#C4B632'),
  init.angle = -50, border = NA
)

Figure 1: A fancy pie chart.

• Referencing a image/figure.

# Define the tag after lagnuage notation such as `pie`
{r pie, fig.cap='A fancy pie chart.', tidy=FALSE}

Use \@ref(fig:pie) to refrence an image. 

3. Inline R Code

There were `r nrow(cars)` cars studied

There were 50 cars studied.

4. Use links in Rmarkdown

Use a plain http address or add a link to a phrase:

• http://example.com
• linked phrase

you can also use use a snippet predefined for Rmd file link (Shfit + Tab) to create a link.

5. Use local images or image URLs.

![Caption](http://example.com/logo.png)

![optional caption text](figures/img.png)

6. Tables in R markdown

1. Insert table use knitr::kable() function. Applicable for any 2D rectangular data(Data Frame, Matrix, etc.).

knitr::kable(head(iris[, 1:3]), "pipe")

2. Or create table with traditional markdown way.

7. LaTeX Equations

• Inline equation:

$equation$

\(\int\limits_{-\infty}^{\infty} e^{-x^{2}} \, dx = \sqrt{\pi}\)

• Display equation:

$$equation$$

\[\int\limits_{-\infty}^{\infty} e^{-x^{2}} \, dx = \sqrt{\pi}\]

8. Sub/Super scripts and others

superscript^2^   
subscript~2~   
~~strikethrough~~
<mark>This is a highlighted text</mark>

superscript²
subscript₂
strikethrough
This is a highlighted text

9. Use Bibliography

Citation in sentence @R-base or after the sentence [@casella2002statistical] 
and one more [-@king1974nonoperative]

Citation in sentence Brutsaert (2005) or after the sentence (Brath and Jonker 2015) and one more (2022)

This will automatically add the bibliography at the end of the documents. For more information see this

10. Links and footnotes

A sample phrase^[This is a footnote; bottom of the page]

A sample phrase¹