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dattrial
2012 Sep 17
6
count NAs per week
Even though I work with R since a year or so I still struggle with simple
problems. I hope someone can help me with this. Been trying for days and am
a little frustrated now.
I have a data frame somewhat like the one bellow:
dattrial<-data.frame(a=c(1,NA,rnorm(4,10)), Week=c(3,3,3,4,4,4))
I want to know how many NAs I have in week 3 and in week 4.
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2012 Jun 16
3
count data without NA in certain time intervals and plot it
Hello,
I'm quite new to R and still spend hours trying to figure out single things
so I hope nobody rolls his eyes over my question.
I have a data set over time and converted it to the POSTIXct format. I added
a column in the data set for the week and the month.
I try to get a plot which shows the weeks on the x-axis and the number of
datasets without NAs on the y-axis. That doesn't