I am trying to open MUlti-sensor precipitation data from eumetsat in R. I can get these data only using GZIP compression method and data format type is GRIB. When I download data I get tar file.
How can I open these data in R?
I tried to use code 

```
> untar("1098496-1of1")

```

but got error message

```
Error in gzfile(path.expand(tarfile), "rb") : cannot open the connection
In addition: Warning message:
In gzfile(path.expand(tarfile), "rb") :
  cannot open compressed file '1098496-1of1', probable reason 'No such file or directory'

```

> 
> but I when I use next code:
> 
> 
> 

```
> dir.create("rainfalldataeumetstatR") 
> getwd() 
[1] "C:/Users/st/Documents" 
> untar("1098496-1of1.tar")
> untar("1098496-1of1.tar", files="rainfalldataeumetstatR")
> list.files("rainfalldataeumetstatR")

```

I don't get some files in my directory and get answer: 

```
character(0)

```

May be that error appears because files in tar zip are gz archives?