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Average Login based on date
3 messages · Mohan L, jim holtman, David Winsemius
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On May 1, 2010, at 2:07 PM, Mohan L wrote:
Hi All, I have the data like this :
sample <- read.csv(file="sample.csv",sep=",",header=TRUE) sample
stdate Domain sex age Login
1 01/11/09 xxx FeMale 25 2
2 01/11/09 xxx FeMale 35 4
3 01/11/09 xxx Male 18 30
4 01/11/09 xxx Male 31 3
5 02/11/09 xxx Male 32 11
6 02/11/09 xxx Male 31 1
7 02/11/09 xxx FeMale 29 1
8 02/11/09 xxx FeMale 23 5
9 03/11/09 xxx FeMale 25 9
10 03/11/09 xxx FeMale 35 6
11 03/11/09 xxx Male 18 3
12 03/11/09 xxx Male 31 0
13 04/11/09 xxx Male 32 25
14 04/11/09 xxx Male 31 1
15 04/11/09 xxx FeMale 29 0
16 01/11/09 yyy FeMale 25 2
17 01/11/09 yyy FeMale 35 4
18 01/11/09 yyy Male 18 30
19 01/11/09 yyy Male 31 3
20 02/11/09 yyy Male 32 11
21 02/11/09 yyy Male 31 1
22 02/11/09 yyy FeMale 29 1
23 02/11/09 yyy FeMale 23 5
24 03/11/09 yyy FeMale 25 9
25 03/11/09 yyy FeMale 35 6
26 03/11/09 yyy Male 18 3
27 03/11/09 yyy Male 31 0
28 04/11/09 yyy Male 32 25
29 04/11/09 yyy Male 31 1
30 04/11/09 yyy FeMale 29 0
I need to fine the average login on 01/11/09 and 02/11/09 etc...
like below
avglog <- with(sample, tapply(Login, stdate, mean) )
stdate AverageLogin 01/11/09 9.75 02/11/09 ..... 03/11/09 ....... How do I find the average Login based on date? Thanks for your time. Mohan L [[alternative HTML version deleted]]
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David Winsemius, MD West Hartford, CT