I'm using the readBin function to save a file as MySQL BLOB as described in this article ( <http://www.r-bloggers.com/save-r-plot-as-a-blob/> )

```
plot_binary <- paste(readBin("temp.png", what="raw", n=1e6), collapse="")

```

My question is :
Once this is in the database how do I dump it back into a file ? 

```
> f = file ( "backIntoFile.png", "wb")
> writeBin(object = plot_binary, con = f ) 
> close(f)

```

This does not work ; the file does not seem to be a valid png ; 

CHeers!