CW2625

R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

library(ggplot2)
ggplot2::mpg

## # A tibble: 234 × 11
##    manufacturer model      displ  year   cyl trans drv     cty   hwy fl    class
##    <chr>        <chr>      <dbl> <int> <int> <chr> <chr> <int> <int> <chr> <chr>
##  1 audi         a4           1.8  1999     4 auto… f        18    29 p     comp…
##  2 audi         a4           1.8  1999     4 manu… f        21    29 p     comp…
##  3 audi         a4           2    2008     4 manu… f        20    31 p     comp…
##  4 audi         a4           2    2008     4 auto… f        21    30 p     comp…
##  5 audi         a4           2.8  1999     6 auto… f        16    26 p     comp…
##  6 audi         a4           2.8  1999     6 manu… f        18    26 p     comp…
##  7 audi         a4           3.1  2008     6 auto… f        18    27 p     comp…
##  8 audi         a4 quattro   1.8  1999     4 manu… 4        18    26 p     comp…
##  9 audi         a4 quattro   1.8  1999     4 auto… 4        16    25 p     comp…
## 10 audi         a4 quattro   2    2008     4 manu… 4        20    28 p     comp…
## # ℹ 224 more rows

ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy))

ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =cty))

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy, color = class))

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy, color = manufacturer))

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy, size = class))

## Warning: Using size for a discrete variable is not advised.

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy, size = class))

## Warning: Using size for a discrete variable is not advised.

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy, alpha = class))

## Warning: Using alpha for a discrete variable is not advised.

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy, shape = class))

## Warning: The shape palette can deal with a maximum of 6 discrete values because more
## than 6 becomes difficult to discriminate
## ℹ you have requested 7 values. Consider specifying shapes manually if you need
##   that many have them.

## Warning: Removed 62 rows containing missing values or values outside the scale range
## (`geom_point()`).

 ggplot(data= mpg)+ geom_point(mapping=aes(x=displ, y =hwy), color = "blue")

```

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.