mattnixon
2011-Mar-04 16:18 UTC
[R] Reading in and manipulating multiple data sets from the same input file
Hi,
I am attempting to write code which will read in my data which is of this
form:
X1 Y1 X2 Y2 .... Xn Yn
0 0 0 0 0 0
1 0 1 255 1 0
2 255 2 0 2 255
3 0 3 0 3 0
4 0 4 0 4 0
5 0 5 0 5 255
6 125 6 125 6 0
7 0 7 0 7 0
8 0 8 0 8 125
.
.
.
With n~100. My current code deals with only 1 data set, n~1 (below):
profile<-read.table("datav1.txt",header=T)
attach(profile)
lines<-profile[Y>100,]
d<-lines$X
i<-1
l<-1:1:i
while(i<30){
l[i]<-(d[(i+1)]-d[i])
temp<-i+1
i<-temp
}
L<-l[l>22]
I want to extend this to accept n data sets to see how L varies between each
data set. The way I have been trying to do this is as follows:
profile<-read.table("datav2.txt",header=T)
j<-1
lines[j]<-profile[profile$Y[(2*j)]>100,]
etc.
However this returns the message "Error in profile$Y : object of type
'closure' is not subsettable". Does anybody know if there is any
way I can
read in a file containing many data sets and save each data set as an
element of some matrix before performing the calculations (above) on it? Or
some other method to achieve the same thing?
Any help or suggestions would be great! Thank you.
--
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Ista Zahn
2011-Mar-04 16:58 UTC
[R] Reading in and manipulating multiple data sets from the same input file
Hi, I'm afraid it's not clear to me what you are trying to do. Can you clarify what result you are trying to achieve? Best, Ista On Fri, Mar 4, 2011 at 11:18 AM, mattnixon <m.r.nixon at ex.ac.uk> wrote:> Hi, > > I am attempting to write code which will read in my data which is of this > form: > > X1 ? ? ? ?Y1 ? ? ? ?X2 ? ? ? Y2 ? ? ? ?.... ? ? ? Xn ? ? ? ?Yn > 0 ? ? ? ? ?0 ? ? ? ? ?0 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?0 ? ? ? ? ?0 > 1 ? ? ? ? ?0 ? ? ? ? ?1 ? ? ? ? 255 ? ? ? ? ? ? ? ? 1 ? ? ? ? ?0 > 2 ? ? ? ? ?255 ? ? ? 2 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?2 ? ? ? ? ?255 > 3 ? ? ? ? ?0 ? ? ? ? ?3 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?3 ? ? ? ? ?0 > 4 ? ? ? ? ?0 ? ? ? ? ?4 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?4 ? ? ? ? ?0 > 5 ? ? ? ? ?0 ? ? ? ? ?5 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?5 ? ? ? ? ?255 > 6 ? ? ? ? ?125 ? ? ? 6 ? ? ? ? 125 ? ? ? ? ? ? ? ? 6 ? ? ? ? 0 > 7 ? ? ? ? ?0 ? ? ? ? ?7 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?7 ? ? ? ? ?0 > 8 ? ? ? ? ?0 ? ? ? ? ?8 ? ? ? ? 0 ? ? ? ? ? ? ? ? ? ?8 ? ? ? ? ?125 > . > . > . > > With n~100. My current code deals with only 1 data set, n~1 (below): > > > profile<-read.table("datav1.txt",header=T) > attach(profile) > > lines<-profile[Y>100,] > d<-lines$X > i<-1 > l<-1:1:i > > while(i<30){ > l[i]<-(d[(i+1)]-d[i]) > temp<-i+1 > i<-temp > } > > L<-l[l>22] > > > I want to extend this to accept n data sets to see how L varies between each > data set. The way I have been trying to do this is as follows: > > profile<-read.table("datav2.txt",header=T) > j<-1 > lines[j]<-profile[profile$Y[(2*j)]>100,] > > etc. > > However this returns the message "Error in profile$Y : object of type > 'closure' is not subsettable". Does anybody know if there is any way I can > read in a file containing many data sets and save each data set as an > element of some matrix before performing the calculations (above) on it? Or > some other method to achieve the same thing? > > Any help or suggestions would be great! Thank you. > > > > > > -- > View this message in context: http://r.789695.n4.nabble.com/Reading-in-and-manipulating-multiple-data-sets-from-the-same-input-file-tp3335523p3335523.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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. >-- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org
Richard M. Heiberger
2011-Mar-04 17:55 UTC
[R] Reading in and manipulating multiple data sets from the same input file
The message "Error in profile$Y : object of type 'closure' is not subsettable" means R thinks you are attempting to subset the function profile. Pick a different name for your variable to avoid the name clash. On Fri, Mar 4, 2011 at 11:18 AM, mattnixon <m.r.nixon@ex.ac.uk> wrote:> Hi, > > I am attempting to write code which will read in my data which is of this > form: > > X1 Y1 X2 Y2 .... Xn Yn > 0 0 0 0 0 0 > 1 0 1 255 1 0 > 2 255 2 0 2 255 > 3 0 3 0 3 0 > 4 0 4 0 4 0 > 5 0 5 0 5 255 > 6 125 6 125 6 0 > 7 0 7 0 7 0 > 8 0 8 0 8 125 > . > . > . > > With n~100. My current code deals with only 1 data set, n~1 (below): > > > profile<-read.table("datav1.txt",header=T) > attach(profile) > > lines<-profile[Y>100,] > d<-lines$X > i<-1 > l<-1:1:i > > while(i<30){ > l[i]<-(d[(i+1)]-d[i]) > temp<-i+1 > i<-temp > } > > L<-l[l>22] > > > I want to extend this to accept n data sets to see how L varies between > each > data set. The way I have been trying to do this is as follows: > > profile<-read.table("datav2.txt",header=T) > j<-1 > lines[j]<-profile[profile$Y[(2*j)]>100,] > > etc. > > However this returns the message "Error in profile$Y : object of type > 'closure' is not subsettable". Does anybody know if there is any way I can > read in a file containing many data sets and save each data set as an > element of some matrix before performing the calculations (above) on it? Or > some other method to achieve the same thing? > > Any help or suggestions would be great! Thank you. > > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Reading-in-and-manipulating-multiple-data-sets-from-the-same-input-file-tp3335523p3335523.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. >[[alternative HTML version deleted]]