[R] Gantt Chart Using Plotrix

[bbb_@@@ m@ili@g off verizo@@@et]

Hi

I am trying to generate a complex Gantt chart using the gantt.chart function in the plotrix package.

Ideally I would like to use a spreadsheet to populate the activities (tasks) and start and end dates that this function expects and then export the spreadsheet file as a .CSV text file so I can read in this file to generate the gantt chart. Reading through the help file I have not been able to see what exactly this spreadsheet should like. The example provided with the "gantt.chart" function seems to indicate all the information needs to be hand coded. Because of the complexity of my chart this is not only very error prone but also is impractical. 

Can anyone help me with this? There is also a "get.gantt.info" function for creating a gantt object but the help on this is almost next to nothing !

Any help you can provide on this would be great.

There is another R package called "plan" which is very user friendly but for my purpose this doesn't have all the functionality I am looking for.

Thanks
indr