[R] coplot =? gannt chart + bargraph

[Jeff D. Hamann]

I would like to display some results from simulations in the form of a
Gantt chart (progress) with a barchart (production) of another variable
below (something very similar to coplot charts). I'm not sure if I should
attempt to build this from scratch (using grid or some of the basic
graphics features) or if there's a similar feature in one of the existing
packages.

I need to take the following (truncated) results,

unit,week,machine,volume,pdxratio
0,14,1,925.402525,1.000000
0,15,1,925.402525,1.000000
0,16,1,925.402525,1.000000
0,17,1,702.792425,0.759445
1,46,1,1007.664896,1.000000
1,47,1,1007.664896,1.000000
1,48,1,1007.664896,1.000000
1,49,1,563.005311,0.558723
2,33,1,1019.781108,1.000000
2,34,1,1019.781108,1.000000
2,35,1,1019.781108,1.000000
2,36,1,697.656677,0.684124
3,41,2,1043.451341,1.000000
3,42,2,1043.451341,1.000000
3,43,2,1043.451341,1.000000
3,44,2,741.645977,0.710762
4,7,2,1048.494508,1.000000
4,8,2,1048.494508,1.000000


and generate charts over unit and week (both as factors?) and think I
should be using aggregate, but wanted to find out if there's a better
method.

Thanks,
Jeff.


-- 
Jeff D. Hamann
Forest Informatics, Inc.
PO Box 1421
Corvallis, Oregon 97339-1421
phone 541-754-1428
fax 541-752-0288
jeff.hamann at forestinformatics.com
http://www.forestinformatics.com