WritingVectorList < Main < Vanderbilt Biostatistics Wiki

---+ Writing a list of vectors to a file

Suppose you have a list whose components are vectors of different length, such as:
<highlight>
a <- list(comp1 = 1:2, comp2 = 3:6, comp3 = 7:9)
</highlight>

Here's how you can write the list to a file such that each component occupies a _row_ of the output file --- therefore, the output file has a different number of columns for each row.
<highlight>
cat(sapply(a, paste, collapse = "\t"), sep = "\n", file = "filename.txt")
</highlight>
In the previous code, we first collapse the elements of each vector to be tab delited (="\t"=), and then we write each vector to the file as separate rows (="\n"=).

This topic: Main > WebHome > Seminars > RClinic > WritingVectorList
Topic revision: 21 Nov 2006, TheresaScott (raw view)

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