Hi everyone,
My database has 3 columns : the x coordinates, the y coordinates and the value
of G for every individual (20 in total). I would like to have the x,y
coordinates of individuals, Under these conditions : the distance to the
reference coordinates must be under or equal to 50 meters + the value of G must
be bigger or equal to 16.
Here’s what I’ve done first :
> kk<- function(x, y)
+ {
+ coordx<-data$x.Koordinate[data$G==24]
+ coordy<-data$y.Koordinate[data$G==24]
+ x <- ifelse(data$x.Koordinate>coordx-51 & data$G>15,data$x.Koordinate,0)
+ y<-ifelse(data$y.Koordinate>coordy-51 & data$G>15,data$y.Koordinate,0)
+ return(c(x,y))
+ }
> kk(data$x.Koordinate, data$y.Koordinate)
[1] 0 0 0 0 0 205550 205550 0 205600 205600
0 0 0 0 0 0 0
[18] 604100 0 604150 604100 0
The problem here is that we can not clearly see the difference between the
coordinates for x and the ones for y.
Then I tried this :
> kk<- function(x, y)
+ {
+ coordx<-data$x.Koordinate[data$G==24]
+ coordy<-data$y.Koordinate[data$G==24]
+ x <- ifelse(data$x.Koordinate>coordx-51 & data$G>15,data$x.Koordinate," ")
+ y<-ifelse(data$y.Koordinate>coordy-51 & data$G>15,data$y.Koordinate," ")
+ return(list(x,y))
+ }
> kk(data$x.Koordinate, data$y.Koordinate)
[[1]]
[1] " " " " " " " " " " "205550" "205550" " "
"205600" "205600" " "
[[2]]
[1] " " " " " " " " " " " " "604100" " "
"604150" "604100" " "
>
Where we can see better the two levels related to the x and y coordinates.
My question is simple : Is it possible for this function to return the values
in a form like x,y or x y ? (without any 0, or « », or space) Or should I use
another R function to obtain this result ?
Thank you for your help, and sorry for the English mistakes,
C.
Gesendet von Mail für Windows 10
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
