More that You Can Do With Scales

class: center, middle, inverse, title-slide

# More that You Can Do With Scales
## Dates, log, labels, breaks, color palettes
### Peter Higgins
### 2021-10-30

---

### Customizing Plot Scales

- Date scales can be tricky
- you can use **scale_(x|y)_date()**
- then you can set date_breaks to an interval
- and format the dates with date_labels. These have specific codes

---

count: false
 
Demonstration 1: Select Variables, then Violin Plot
.panel1-demo1-auto[

```r
*mdeaths
```
]
 
.panel2-demo1-auto[

```
# A tibble: 72 × 5
   deaths month  year   day date      
    <dbl> <int> <dbl> <dbl> <date>    
 1   2134     1  1974     1 1974-01-01
 2   1863     2  1974     1 1974-02-01
 3   1877     3  1974     1 1974-03-01
 4   1877     4  1974     1 1974-04-01
 5   1492     5  1974     1 1974-05-01
 6   1249     6  1974     1 1974-06-01
 7   1280     7  1974     1 1974-07-01
 8   1131     8  1974     1 1974-08-01
 9   1209     9  1974     1 1974-09-01
10   1492    10  1974     1 1974-10-01
# … with 62 more rows
```
]

---
count: false
 
Demonstration 1: Select Variables, then Violin Plot
.panel1-demo1-auto[

```r
mdeaths %>%
* ggplot(aes(x = date, y = deaths))
```
]
 
.panel2-demo1-auto[
<img src="scales2_microflip_files/figure-html/demo1_auto_02_output-1.png" width="432" />
]

---
count: false
 
Demonstration 1: Select Variables, then Violin Plot
.panel1-demo1-auto[

```r
mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
* geom_line()
```
]
 
.panel2-demo1-auto[
<img src="scales2_microflip_files/figure-html/demo1_auto_03_output-1.png" width="432" />
]

---
count: false
 
Demonstration 1: Select Variables, then Violin Plot
.panel1-demo1-auto[

```r
mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line() +
* theme_linedraw(base_size = 14)
```
]
 
.panel2-demo1-auto[
<img src="scales2_microflip_files/figure-html/demo1_auto_04_output-1.png" width="432" />
]

---
count: false
 
Demonstration 1: Select Variables, then Violin Plot
.panel1-demo1-auto[

```r
mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line() +
  theme_linedraw(base_size = 14) +
* scale_x_date(date_breaks = "6 months")
```
]
 
.panel2-demo1-auto[
<img src="scales2_microflip_files/figure-html/demo1_auto_05_output-1.png" width="432" />
]

---
count: false
 
Demonstration 1: Select Variables, then Violin Plot
.panel1-demo1-auto[

```r
mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line() +
  theme_linedraw(base_size = 14) +
  scale_x_date(date_breaks = "6 months") +
* scale_x_date(date_labels = '%b\n%Y')
```
]
 
.panel2-demo1-auto[
<img src="scales2_microflip_files/figure-html/demo1_auto_06_output-1.png" width="432" />
]

<style>
.panel1-demo1-auto {
  color: black;
  width: 38.6060606060606%;
  hight: 32%;
  float: left;
  padding-left: 1%;
  font-size: 80%
}
.panel2-demo1-auto {
  color: black;
  width: 59.3939393939394%;
  hight: 32%;
  float: left;
  padding-left: 1%;
  font-size: 80%
}
.panel3-demo1-auto {
  color: black;
  width: NA%;
  hight: 33%;
  float: left;
  padding-left: 1%;
  font-size: 80%
}
</style>

---

### Date Formatting Codes

|Format Example |Unit                                     |Code |
|:--------------|:----------------------------------------|:----|
|Mon            |abbreviated day text                     |%a   |
|Monday         |full day text                            |%A   |
|09             |digit day of month                       |%d   |
|3 (0-6)        |digit day of week (Sunday = 0)           |%w   |
|24 (0-53)      |digit week of year (0-53) - Sunday start |%U   |
|44 (0-53)      |digit week of year (0-53) - Monday start |%W   |
|Oct            |Abbreviated Month                        |%b   |
|October        |Full Month                               |%B   |
|10             |Digit Month                              |%m   |
|12             |2-Digit Year                             |%y   |
|2012           |4-Digit Year                             |%Y   |