search for: pre_event_returns

...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...