library(tseries)
sie - get.hist.quote(instrument=SIE.DE, start=2010-01-01, quote=AdjClose)
vow - get.hist.quote(instrument=VOW.DE, start=2010-01-01, quote=AdjClose)
lin - get.hist.quote(instrument=LIN.DE, start=2010-01-01, quote=AdjClose)
dax - get.hist.quote(instrument=^GDAXI, start=2010-01-01,
Dear useRs,
I am stuck with a piece of code and hope you could give me some pointers.
My aim is to calculate the lm-regression coefficients of individual stocks
against an index. I am interested in both the coefficient and the pval. While I
could do this manually for a select hand full, I hope
Hi!
I've tried it, but the problem is that each element has a different
size, with makes rbind() useless.
Is there then a function/package that allows appending data in an Excel
sheet?
I've searched already for a few packages, but none (except, in theory,
RODBC) can append.
Any suggestion?
Ivan Calandra wrote:
I've tried it, but the problem is that each element has a different
size, with makes rbind() useless.
Assuming that size means different number of columns, then appending is
not valid, because it would change the structure of the table, and with ODBC
we are in the
What if size means both columns and rows?
Here is one of such lists:
test - structure(list(m = structure(c(0.090909090909091,
0.181818181818182,
0.272727272727273, 0.363636363636364, 0.454545454545455, 0.545454545454545,
0.636363636363636, 0.727272727272727, 0.818181818181818,
Ivan Calandra wrote:
What if size means both columns and rows?
Then you are not longer in the database world, and should use one of the
half dozen other methods to write to Excel, either native, via Perl
(portable) or RCOM. Search R-search for write Excel.
Dieter
--
View this message
As I said earlier, none of the packages I have found (dataframes2xls,
WriteXLS, xlsReadWrite, xlsx) to export to xls allow appending on the
same sheet.
So at the end, write.csv() is more flexible for my use.
Do you know if the RExcel add-on would be useful in my case? I took a
look at the
Ivan Calandra wrote:
As I said earlier, none of the packages I have found (dataframes2xls,
WriteXLS, xlsReadWrite, xlsx) to export to xls allow appending on the
same sheet.
Please check again. WriteXLS has a parameter where to start writing.
D
--
View this message in context:
I've checked in the package WriteXLS and couldn't find such parameter (I
hope I didn't overlook anything!).
However write.xls() in xlsReadWrite package has such parameter.
I've tried it and the problem is that, even though I can make the
writing start at the last line, it will overwrite the
Just to confirm, WriteXLS() does not have such a parameter, but write.xls() in
the xlsReadWRite package does. As you have noted however, none of these
approaches are really designed to enable flexible appending to an existing
Excel file.
As I believe Dieter noted in an earlier post, your best
Dear R users,
I have a follow-up question on sqlSave().
Since most of the output from the tests I use are lists, I would like to
loop to export each element of the list and append it to the sheet.
Here is what I do:
library(RODBC)
test - structure(list(m = structure(c(0.090909090909091,
Ivan Calandra wrote:
...
for (i in 1:4){
sqlSave(xlsFile, as.data.frame(test[[i]]), tablename=test, rownames=F,
addPK=T, append=T)
}
Error in odbcUpdate(channel, query, mydata, coldata[m, ], test = test,
: missing columns in 'data'
odbcCloseAll()
I have never managed to
Hello,
Sometimes the looping (using for) seems to skip some iterations.
An example:
arg - matrix(NA,length(seq(.30,.5,.01)),1)
for (i in seq(.30,.5,.01)) {
arg[i*100-29] - i
}
arg
What is the problem with this coding, please?
Thank you so much,
--
Bruno Cara Giovannetti, PhD Candidate
it doesn't skip...
think about why:
seq(.30,.5,.01) * 100 - 29 == 1:21
isn't always TRUE.
b
On Nov 17, 2009, at 9:17 PM, Bruno Giovannetti wrote:
Hello,
Sometimes the looping (using for) seems to skip some iterations.
An example:
arg - matrix(NA,length(seq(.30,.5,.01)),1)
for (i in
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Bruno Giovannetti
Sent: Tuesday, November 17, 2009 3:18 PM
To: r-help@r-project.org
Subject: [R] :Problem with Looping
Hello,
Sometimes the looping (using for) seems to skip
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