Message-ID: <1364413775.34599.YahooMailNeo@web142601.mail.bf1.yahoo.com>
Date: 2013-03-27T19:49:35Z
From: arun
Subject: conditional Dataframe filling
In-Reply-To: <20130327162733.15293otr8nq87ias@wm1.dal.ca>
Dear Camilo,
How do you want to deal with the NAs?
If I remove the NAs:
dat1 <- structure(list(
w = c(TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE,FALSE,FALSE,TRUE,TRUE,TRUE,TRUE),
x = c(NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA),
y = c(FALSE,FALSE,FALSE,FALSE,FALSE,TRUE,TRUE,FALSE,FALSE,TRUE,TRUE,TRUE,FALSE),
z = c(TRUE,TRUE,TRUE,TRUE,FALSE,TRUE,TRUE,TRUE,FALSE,TRUE,TRUE,TRUE,FALSE)),
row.names = c(NA, -13L),
class = "data.frame")
dat1<-t(dat1)
colnames(dat1)<-c("a","b","c","d","e","f","g","h","i","j","k", "l","m")
dat1<- as.data.frame(na.omit(dat1))
dat2<-dat1
dat2[]<-t(apply(!dat1,1,function(x) unlist(lapply(split(x,cumsum(c(0,abs(diff(x))))),cumsum))))
?dat2
#? a b c d e f g h i j k l m
#w 0 0 0 0 0 1 2 3 4 0 0 0 0
#y 1 2 3 4 5 0 0 1 2 0 0 0 1
#z 0 0 0 0 1 0 0 0 1 0 0 0 1
?dat1
#????? a???? b???? c???? d???? e???? f???? g???? h???? i??? j??? k??? l???? m
#w? TRUE? TRUE? TRUE? TRUE? TRUE FALSE FALSE FALSE FALSE TRUE TRUE TRUE? TRUE
#y FALSE FALSE FALSE FALSE FALSE? TRUE? TRUE FALSE FALSE TRUE TRUE TRUE FALSE
#z? TRUE? TRUE? TRUE? TRUE FALSE? TRUE? TRUE? TRUE FALSE TRUE TRUE TRUE FALSE
A.K.
----- Original Message -----
From: Camilo Mora <cmora at dal.ca>
To: arun <smartpink111 at yahoo.com>
Cc: R help <r-help at r-project.org>
Sent: Wednesday, March 27, 2013 3:27 PM
Subject: Re: [R] conditional Dataframe filling
Dear Arun,
Thank you very? much for your help with this.I did not know where to start looking to solve that problem, so I truly appreciate your input.
The line of code you sent seems to work but it duplicates the results. Do you know why that may happen?
Below is a larger database, to which I apply your line of code.
Thank you very much again,
Camilo
dat1 <- structure(list(
w = c(TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE,FALSE,FALSE,TRUE,TRUE,TRUE,TRUE),
x = c(NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA,NA),
y = c(FALSE,FALSE,FALSE,FALSE,FALSE,TRUE,TRUE,FALSE,FALSE,TRUE,TRUE,TRUE,FALSE),
z = c(TRUE,TRUE,TRUE,TRUE,FALSE,TRUE,TRUE,TRUE,FALSE,TRUE,TRUE,TRUE,FALSE)),
row.names = c(NA, -13L),
class = "data.frame")
dat1<-t(dat1)
colnames(dat1)<-c("a","b","c","d","e","f","g","h","i","j","k", "l","m")
dat2<-dat1
dat2[]<-t(apply(!dat1,1,function(x) unlist(lapply(split(x,cumsum(c(0,abs(diff(x))))),cumsum))))
Camilo Mora, Ph.D.
Department of Geography, University of Hawaii
Currently available in Colombia
Phone:? Country code: 57
? ? ? ? Provider code: 313
? ? ? ? Phone 776 2282
? ? ? ? From the USA or Canada you have to dial 011 57 313 776 2282
http://www.soc.hawaii.edu/mora/
Quoting arun <smartpink111 at yahoo.com>:
> HI,
>
> Just a correction:
>
> :
>
> dat2[]<-t(apply(!dat1,1,function(x) unlist(lapply(split(x,cumsum(c(0,abs(diff(x))))),cumsum))))? #should also work
> A.K.
>
>
>
> ----- Original Message -----
> From: arun <smartpink111 at yahoo.com>
> To: Camilo Mora <cmora at dal.ca>
> Cc: R help <r-help at r-project.org>
> Sent: Wednesday, March 27, 2013 9:09 AM
> Subject: Re: [R] conditional Dataframe filling
>
>
>
> Hi,
> You could try:
> dat1<- read.table(text="
> a??? b??? c??? d
> TRUE? TRUE? TRUE? TRUE
> FALSE FALSE FALSE TRUE
> FALSE? TRUE? FALSE? FALSE
> ",sep="",header=TRUE)
> dat2<-dat1
> ?dat2[]<-t(apply(1*!dat1,1,function(x) unlist(lapply(split(x,cumsum(c(0,abs(diff(x))))),cumsum))))
> ?dat2
> #? a b c d
> #1 0 0 0 0
> #2 1 2 3 0
> #3 1 0 1 2
> A.K.
>
>
> ----- Original Message -----
> From: Camilo Mora <cmora at dal.ca>
> To: r-help at r-project.org
> Cc:
> Sent: Wednesday, March 27, 2013 4:31 AM
> Subject: [R] conditional Dataframe filling
>
> Hi everyone:
>
> This may be trivial but I just have not been able to figure it out.
>
> Imagine the following dataframe:
> a? ?? b? ?? c? ?? d
> TRUE? TRUE? TRUE? TRUE
> FALSE FALSE FALSE TRUE
> FALSE? TRUE? FALSE? FALSE
>
> I would like to create a new dataframe, in which TRUE gets 0 but if false then add 1 to the cell to the left. So the results for the example above should be something like:
>
> a? ?? b? ?? c? ?? d
> 0? ?? 0? ?? 0? ?? 0
> 1? ?? 2? ?? 3? ?? 0
> 1? ?? 0? ?? 1? ?? 2
>
> I wonder if you may know?.
>
> Thanks,
>
> Camilo
>
>
>
>
> Camilo Mora, Ph.D.
> Department of Geography, University of Hawaii
> Currently available in Colombia
> Phone:?? Country code: 57
> ? ? ? ?? Provider code: 313
> ? ? ? ?? Phone 776 2282
> ? ? ? ?? From the USA or Canada you have to dial 011 57 313 776 2282
> http://www.soc.hawaii.edu/mora/
>
> ______________________________________________
> 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.
>
>