Hi,
I have a matrix with about 3000 rows, and 1 column. The contents of the matrix
are stock symbols (IBM, AAPL, etc) for instance. I also have a function that
takes a single stock symbol as an argument, parses the text of Google Finance
and returns the related stock symbols that the page has listed into a CSV file.
For example, IBM would return the following in a CSV file:
rels
1 ORCL
2 HPQ
3 MSFT
4 CSCO
5 EMC
6 DELL
7 SAP
8 INTC
9 SY
10 CA
I'm trying to use sapply (or any of the apply functions) to loop through the
matrix of 3000 stock symbols and pass them through to my function. I get the
following errors when using sapply:
1: In file(con, "r") : only first element of 'description' argument used
2: In if (file == "") file <- stdout() else if (is.character(file)) { ... :
the condition has length > 1 and only the first element will be used
3: In file(file, ifelse(append, "a", "w")) :
only first element of 'description' argument used
I think it has something to do with the fact that I'm trying to pass a vector
as an argument into a function which only accepts a scalar argument. I've also
tried "do.call" but can't get any results. How do I loop through the matrix in
order to pass each individual stock symbol as an argument into the function?
Thanks so much for your help.
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