21125

library(ggplot2)
library(dplyr)

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

ggplot(data = mpg) + geom_point(mapping=aes(x=displ, y=hwy)) + facet_wrap(~drv,nrow=2)

ggplot(data = mpg) + geom_point(mapping=aes(x=displ, y=hwy)) + facet_wrap(drv~cyl)

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

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

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

ggplot(data = mpg) + geom_smooth(mapping=aes(x=displ, y=hwy, linetype = drv))

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

str(mpg)

## tibble [234 × 11] (S3: tbl_df/tbl/data.frame)
##  $ manufacturer: chr [1:234] "audi" "audi" "audi" "audi" ...
##  $ model       : chr [1:234] "a4" "a4" "a4" "a4" ...
##  $ displ       : num [1:234] 1.8 1.8 2 2 2.8 2.8 3.1 1.8 1.8 2 ...
##  $ year        : int [1:234] 1999 1999 2008 2008 1999 1999 2008 1999 1999 2008 ...
##  $ cyl         : int [1:234] 4 4 4 4 6 6 6 4 4 4 ...
##  $ trans       : chr [1:234] "auto(l5)" "manual(m5)" "manual(m6)" "auto(av)" ...
##  $ drv         : chr [1:234] "f" "f" "f" "f" ...
##  $ cty         : int [1:234] 18 21 20 21 16 18 18 18 16 20 ...
##  $ hwy         : int [1:234] 29 29 31 30 26 26 27 26 25 28 ...
##  $ fl          : chr [1:234] "p" "p" "p" "p" ...
##  $ class       : chr [1:234] "compact" "compact" "compact" "compact" ...

manif<-as.factor(mpg$cyl)
mpg$cf<-manif
str(mpg)

## tibble [234 × 12] (S3: tbl_df/tbl/data.frame)
##  $ manufacturer: chr [1:234] "audi" "audi" "audi" "audi" ...
##  $ model       : chr [1:234] "a4" "a4" "a4" "a4" ...
##  $ displ       : num [1:234] 1.8 1.8 2 2 2.8 2.8 3.1 1.8 1.8 2 ...
##  $ year        : int [1:234] 1999 1999 2008 2008 1999 1999 2008 1999 1999 2008 ...
##  $ cyl         : int [1:234] 4 4 4 4 6 6 6 4 4 4 ...
##  $ trans       : chr [1:234] "auto(l5)" "manual(m5)" "manual(m6)" "auto(av)" ...
##  $ drv         : chr [1:234] "f" "f" "f" "f" ...
##  $ cty         : int [1:234] 18 21 20 21 16 18 18 18 16 20 ...
##  $ hwy         : int [1:234] 29 29 31 30 26 26 27 26 25 28 ...
##  $ fl          : chr [1:234] "p" "p" "p" "p" ...
##  $ class       : chr [1:234] "compact" "compact" "compact" "compact" ...
##  $ cf          : Factor w/ 4 levels "4","5","6","8": 1 1 1 1 3 3 3 1 1 1 ...

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

ggplot(data = mpg) + geom_smooth(mapping=aes(x=displ, y=hwy, linetype = cf))

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

ggplot(data = mpg) + geom_smooth(mapping=aes(x=displ, y=hwy, color=drv))

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

ggplot(data = mpg) + geom_smooth(mapping=aes(x=displ, y=hwy, color=drv), show.legend = FALSE)

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

ggplot(data = mpg) + geom_smooth(mapping=aes(x=displ, y=hwy, group=drv))

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

ggplot(data=mpg,mapping=aes(x=displ,y=hwy)) + geom_point(mapping=aes(color=class)) + geom_smooth(data = filter(mpg, class=="subcompact"),se=FALSE)

## `geom_smooth()` using method = 'loess' and formula = 'y ~ x'

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