Loading required package: gtools
Loading required package: gdata
gdata: read.xls support for 'XLS' (Excel 97-2004) files ENABLED.

gdata: Unable to load perl libaries needed by read.xls()
gdata: to support 'XLSX' (Excel 2007+) files.

gdata: Run the function 'installXLSXsupport()'
gdata: to automatically download and install the perl
gdata: libaries needed to support Excel XLS and XLSX formats.

Attaching package: 'gdata'

The following object(s) are masked from 'package:stats':

    nobs

The following object(s) are masked from 'package:utils':

    object.size

Loading required package: caTools
Loading required package: grid

Attaching package: 'gplots'

The following object(s) are masked from 'package:stats':

    lowess

