In 12.5 of this textbook (["R Programming for Data Science" by Roger D. Peng](https://bookdown.org/rdpeng/rprogdatascience/managing-data-frames-with-the-dplyr-package.html)) , it tells me to download the city of Chicago database ( a link is provided. Then it says "After unzipping the archive, you can load the data into R using the readRDS() function.

```
chicago <- readRDS("chicago.rds")"

```

And I unzipped the file in my downloads folder and then typed in the code (`chicago <- readRDS("chicago.rds")`) just like it says. Yet it is not working and I keep getting an error message saying: 

> 
> Error in gzfile(file, "rb") : cannot open the connection
>  In addition: Warning message:
>  In gzfile(file, "rb") :
>  cannot open compressed file 'chicago.rds', probable reason 'No such file or directory'
> 
> 
> 

So how do I actually load this data in/unzip it?
I am brand new to R and really need to get this file unzipped and loaded so I can continue with my work!