On Sun, 20 Jun 2010, Erin Hodgess wrote:
Dear R People:
Here is a little section of a data frame:
zzz[1:10,]
DATE GENDER AGE Co DEATH1
3945 2009-04-16 M 24 Botulinic 23
3851 2009-04-16 M 35 Constitutional 23
8495 2009-04-16 F 49 Constitutional 27
10967 2009-04-16 F 47 Constitutional 28
11164 2009-04-16 F 26 Constitutional 28
15220 2009-04-16 M 49 Gastrointestinal 30
1207 2009-04-16 F 39 Other 20
1514 2009-04-16 F 39 Other 20
2548 2009-04-16 M 49 Other 22
3430 2009-04-16 F 54 Other 23
sometimes I want use the date and obtain the totals deaths, sometimes
I want to use the Co and obtain the total number of deaths, etc.
Like this?
xtabs(DEATH1~Co,dat)
Co
Botulinic Constitutional Gastrointestinal Other
23 106 30 85
If not, please say what the result should be.
HTH,
Chuck
I've tried "table" and "with" but am having no success.
Any help would be much appreciated.
thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodg...@gmail.com
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Charles C. Berry (858) 534-2098
Dept of Family/Preventive Medicine
E mailto:cbe...@tajo.ucsd.edu UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
