Hi R,
I am examining the mean returns 10 days before and 10 days after a
event. Now I have several events the corresponding pre and post event 10
day mean returns... something like this
Pre_Start Pre_End Pre_Mean Pre_SD
Post_Start Post_End Post_Mean
Post_SD
1 2002-02-22 2002-03-08 0.004968027
0.017443954 2002-03-12 2002-03-25 0.0004099697
0.012529438
2 2002-04-25 2002-05-08 -0.006371706
0.011008257 2002-05-10 2002-05-23 -0.0022429404
0.007736497
3 2002-07-24 2002-08-06 0.005083225
0.015508255 2002-08-08 2002-08-21 0.0048237816
0.008116529
4 2002-07-24 2002-08-06 0.005083225
0.015508255 2002-08-08 2002-08-21 0.0048237816
0.008116529
5 2003-01-08 2003-01-21 0.004439480
0.012310963 2003-01-23 2003-02-05 -0.0064620002
0.012731789
I obtained a barplot using the below
layout(matrix(c(1,1,2,2),ncol=2,byrow=T))
barplot(rnorm(10),main="Pre_Event_Returns",col="red")
barplot(rnorm(10),main="Post_Event_Returns",col="blue")
However I would like to know if it is possible to do the following-
merge the two barplots i.e. a single barplot which will include both the
pre and post event returns
Any suggestions would be appreciated
Ravi
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