Displaying 2 results from an estimated 2 matches for "adatafram".
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datafram
2005 Aug 17
1
RODBC and sqlColumns
...LABLE REMARKS COLUMN_DEF SQL_DATA_TYPE
SQL_DATETIME_SUB
[16] CHAR_OCTET_LENGTH ORDINAL_POSITION IS_NULLABLE DISPLAY_SIZE
FIELD_TYPE
<0 rows> (or 0-length row.names)
But there is no test table defined anywhere else but the X schema. If I
do sqlSave(db,aDataFrame,"X.test",T,F), it says test already defined. If
I change the aDataFrame to be different than the fields actually in the
data, then R starts to create a new table but returns
Error in sqlColumns(db, "X.test") : 'X.test': table not found on channel
It seems to be havin...
2007 Jul 06
2
access to 'formula' terms in a user function
...y for some
multidimensional windowing - but this question is on scripting basics). For
purposes of figuring out my needs, lets just consider writing a function
that takes a formula and a dataset, and outputs the mean of each variable in
the formula model. So:
MyFunction <- function(AFormula, ADataFrame) {
...
}
>MyFunction(Y ~ A + B, TheData)
would give results something like:
Mean of MyData$Y is 5.3
Mean of MyData$A is 3.4
Mean of MyData$B is 8.2
QUESTION 1:
How do I determine the terms in the formula within the function?
QUESTION 2:
How do I use one of those terms to get to the...