On Jun 12, 2014, at 5:11 AM, Pat-74100 wrote: > > Hi > > @Rolf Turner: So you're wrong, I can guaranty you this is not homework ... > but just for a graph I'm trying do plot. > > @Arun: Yes I've done a mistake, it is 1-100 , 101-200 etc .. or even > 1-50,51-100 etc. The range is not important. >
In that case, something along the lines of : sapply( seq(1, maxval, by=50), function (x) mean( some_object[x:(x+49)] ) ) Pretty basic. The advice to read more basic tutorials and play around with the common loop idioms on their help page examples might be worth your effort. -- david. > Thanks > > >> Date: Thu, 12 Jun 2014 02:04:26 -0700 >> From: smartpink...@yahoo.com >> Subject: Re: [R] Average value in a particular range of a matrix >> To: leonardsqual...@hotmail.com >> >> Hi Pat, >> Is it 1-100, 101-200, 201-300,.. or just the way you described? >> A.K. >> >> >> >> >> On Wednesday, June 11, 2014 11:45 PM, Pat-74100 >> <leonardsqual...@hotmail.com> wrote: >> Hi >> >> I have a matrix with values of size 1*500 i have to find the avg >> value of first 1 to 100 ,avg value of 100 - 200 and so on up to 400-500. >> is there any function to find the average of 1 -100 and 100 - 200, 200 - >> 300,300 - 400,400 - 500 ?? >> >> Thanks David Winsemius Alameda, CA, USA ______________________________________________ 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.
