Displaying 3 results from an estimated 3 matches for "tradetim".
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tradetime
2013 Sep 18
1
Design for classes with database connection
...gard to the other variables. Something like this:
.mmstruct <- setClass('mmstruct', representation(
name = "character",
index = "array",
N = "integer",
K = "integer",
compiD = "array",
secID = "array",
tradetime = "POSIXlt",
flag = "array",
price = "array",
vol = "array",
other = "data.frame"))
2. To enable a lightweight ordering function, the class should basically create an SQLite database on construction and delete it if 'rm()' is...
2011 Nov 10
1
Help: sqlSave Error
...E, rownames=FALSE)
Error: sqlSave(con, highVol, "jrgchis.dbo.futuresHighVol", append = TRUE, :
42S01 2714 [Microsoft][ODBC SQL Server Driver][SQL Server]
'futuresHighVol' already exist
[RODBC] ERROR: Could not SQLExecDirect 'CREATE TABLE
jrgchis.dbo.futuresHighVol ("TradeTime" varchar(255), "vol" float)'
Please Help!!!
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2011 Dec 14
1
A Question Re ISOdatetime
Dear all,
I am using the ISOdatetime function like this:
test.info$TradeTime = with(test.info, mapply(FUN = ISOdatetime, Year, Month, Day, Hour, Minute, 60, "EST"))
Where Year, Month etc are all numeric.
I think ISOdatetime should return a POSIXct object. However, the result I obtained from the line above is all numeric. Could you please advise? I wish to get...