@Schouwenaars2016Importing2

>
how to import data from relational databases and how to import and work with data coming from the web. Finally, you'll get hands-on experience with importing data from statistical software packages such SAS, STATA and SPSS.

第一部分比较重要。


https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch1.pdf
https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch2.pdf
https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch3.pdf
https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch4.pdf
https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch5.pdf

```{r}
download.file(
    "https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch5.pdf"
    ,"slides/importing_data_in_r_2_ch5.pdf"
)
```

下载出来是报错的。

```
trying URL 'https://s3.amazonaws.com/assets.datacamp.com/production/course_1478/slides/importing_data_in_r_2_ch5.pdf'
Content type '' length 573618 bytes (560 KB)
downloaded 84 KB

downloaded length 86016 != reported length 573618
```

