On 01.08.2013 10:36, Zhang Weiwu wrote:
Hello. readBin is designed to read a batch of data with the same spec,
e.g. read 10000 floats into a vector. In practise I read into data
frame, not vector. For each data frame, I need to read a integer and a
float.
for (i in 1:1000) {
dataframe$int[i] <- readBin(con, integer(), size=2)
dataframe$float[i] <- readBin(con, numeric(), size=4)
}
Ideally one would read bunches of identical types within R. This seems
not to be possible here, hence I'd suggest to read it via some C code.
Best,
Uwe Ligges
And I need to read 100 such data files, ending up with a for loop in a
for loop. Something feels wrong here, as it is being said if you use
double-FOR you are not speaking R.
What is the R way of doing this? I can think of writing the content of
the loop into a function, and vectorize it -- But, the result would be a
list of list, not exactly data-frame, and the list grows incrementally,
which is inefficient, since I know the size of my data frame at the
outset. I am a new learner, not speaking half of R vocabulary, kindly
provide some hint please:)
Best.
______________________________________________
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
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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
and provide commented, minimal, self-contained, reproducible code.
