Hi Bert, I should have phrased my question differently.
I actually want to do two things. First is to make a step plot. The "s"/"S" is a typo on my part. The second is to write a script that when I ask the program for Response of time == 4, I want it to return "6", or if I ask for response of time == 12, it will return "4", and so on. Pharavee -----Original Message----- From: Bert Gunter [mailto:gunter.ber...@gene.com] Sent: Thursday, August 14, 2014 11:27 AM To: Jaiprasart, Pharavee (HSC) Cc: r-help@r-project.org Subject: Re: [R] Operating on the value from row i and row i+1 Your query is a bit unclear, but I suspect ?plot and a **careful read** about types "s" and "S" therein would address your problem. Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." Clifford Stoll On Thu, Aug 14, 2014 at 8:07 AM, Jaiprasart, Pharavee (HSC) <pharavee-jaipras...@ouhsc.edu> wrote: > Hi all, > > > > I'd like to make a step plot of Time vs Response graph. > > This is the example of my data frame - the real data frame has more than a > thousand rows. > > > > Time Duration of infusion Infusion Rate > Response Subtype > > 0 3 > 2 5 0 > > 3 6 > 3 6 0 > > 9 6 > 4 4 0 > > > > I cannot just use type = c("s") for this because I also want to use the value > of the in between time for further calculation too (If I ask the program for > Response of time == 4, I want it to return "6"). > > > > The way I think the script should work is that: > > > > For all rows that has subtype ==0, if time is between the value of row > /i/ and /i+1/ (e.g. row 1 and 2 which is 0-3), make a new column > "Dummy" and return the value of row /i/ from the Response column (e.g. > 5 in this > > example) , and do these for all rows (e.g. any time between row 2 and > 3 which is 3-9, make a new column and return 6). Then I can say if > Time>0 (value in column1) and <3 (value from column 1+2), y = value in > Dummy > > > > Is there any way to do this in R? > > > > Thanks! > > Pharavee > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://urldefense.proofpoint.com/v1/url?u=https://stat.ethz.ch/mailma > n/listinfo/r-help&k=7DHVT22D9IhC0F3WohFMBA%3D%3D%0A&r=s1Xjgqw9bK2MQxns > spJiRNsjZKIq%2B8%2Fhu084PPVY11o%3D%0A&m=wxyqWjigDlACZVtOk8tgsAt8iaUOs0 > k79BnWO1L%2FRUs%3D%0A&s=8d0ca7ccfe0e7c4bac733aa2e8fe9a7068ffcf501cb181 > e4261e95efc1b0e31a PLEASE do read the posting guide > https://urldefense.proofpoint.com/v1/url?u=http://www.r-project.org/po > sting-guide.html&k=7DHVT22D9IhC0F3WohFMBA%3D%3D%0A&r=s1Xjgqw9bK2MQxnss > pJiRNsjZKIq%2B8%2Fhu084PPVY11o%3D%0A&m=wxyqWjigDlACZVtOk8tgsAt8iaUOs0k > 79BnWO1L%2FRUs%3D%0A&s=7ca8e5a21aa512fa8bc5669fb6f4ea587d530d4a20146fd > 526148d17a3d198bc and provide commented, minimal, self-contained, > reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
