Dear all,
I have a data.frame xy that contains numeric data and data_qual which contains
qualitative data which I want to include in a for loop with an if statement
(commented out in the code below).
The if statement should be applied if the ID in data_qual$ID is the same than
in xy$ID.
I am trying to make it independent by doing this:
if(i$ID %in% data_qual[data_qual$ID %in% i$ID,]$ID){...}
but it doesn't work when I incorporate it in the for loop. The logical result
is correct but it only works for the first element when implemented in the for
loop. Can anyone see what I am doing wrong here?
#######################
Here is my code:
xy
<-data.frame(NAME=c("NAME1","NAME1","NAME1","NAME2","NAME2","NAME2","NAME3","NAME3"),ID=c(87,87,87,199,199,199,233,233),X_START_YEAR=c(1950,1988,1994,1899,1909,1924,1945,1948),Y_START_VALUE=c(75,25,-90,-8,-55,-10,-9,12),X_END_YEAR=c(1985,1994,1999,1904,1924,1987,1946,1949),
Y_END_VALUE=c(20,50,-15,-70,-80,-100,24,59))
data_qual <-
data.frame(NAME=c("NAME2","NAME3"),ID=c(199,233),X_START_YEAR=c(1986,1905),
Y_START_VALUE=c("-X","ST"),X_END_YEAR=c(1987,1907),Y_END_VALUE=c("-X","ST"))
# split xy by group as defined by ID
ind <- split(xy,xy$ID)
for (i in ind){xx = unlist(i[,grep('X_',colnames(i))])
yy = unlist(i[,grep('Y_',colnames(i))])
fname <- paste0(i[1, 'ID'], '.png')
png(fname, width=1679, height=1165, res=150)
if(any(xx < 1946)) {my_x_lim <- c(min(xx), 2014)} else {my_x_lim <- c(1946,
2014)}
par(mar=c(6,8,6,5))
plot(xx, yy,main=unique(i[,1]),xlab="Time [Years]",ylab="Value
[m]",pch=21,xlim = my_x_lim,font.lab=2, cex.lab=1.2, cex.axis=1.1)
i <- i[,-1]
segments(i[,2],i[,3],i[,4],i[,5],lwd=2)
# if(i$ID %in% data_qual[data_qual$ID %in% i$ID,]$ID){
# rel_data_qual <- data_qual[data_qual$ID %in% i$ID,]
# text(x = rel_data_qual$X_END_YEAR,
# y = min(i$Y_END_VALUE + 3),
# labels = rel_data_qual$Y_END_VALUE)
# }
dev.off()
}
Thanks, Kurt
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