Transparency layer with embedded R

I probably badly misunderstand the ORE transparency layer - as demonstrated on the following example.
I have a table X, that can be accessed from R client.
> summary(X)
       X                Y
Min.   : 1.00   Min.   :0.000
1st Qu.: 25.75   1st Qu.:4.686
Median : 50.50   Median :5.658
Mean   : 50.50   Mean   :5.248
3rd Qu.: 75.25   3rd Qu.:6.234
Max.   :100.00   Max.   :6.644
However using ore.doEval leads to Error: object 'X' not found
Note that the language setting is only to get message in English and has no other effect.
> ore.doEval(function() {Sys.setenv(LANG = "en"); summary(X)}, ore.connect= TRUE)
Error in .oci.GetQuery(conn, statement, data = data, prefetch = prefetch, :
ORA-20000: RQuery error
Error in summary(X) :
error in evaluating the argument 'object' in selecting a method for function 'summary': Error: object 'X' not found
ORA-06512: in "RQSYS.RQEVALIMPL", Zeile 104
ORA-06512: in "RQSYS.RQEVALIMPL", Zeile 101
How can I access data from a table in embedded function? Do I have to use ore.tableApply()?
any help appreciated.
thx,
Jaromir D.B. Nemec

To access a table directory, use ore.tableApply. Although ore.doEval does not explicitly accept data from a dedicated input argument, it's possible to retrieve data from the database using ore.sync and ore.pull within the function:
ore.doEval(function() {
library(ORE)
ore.sync(table = "X")
dat <- ore.pull(ore.get("X"))
summary(dat)}, ore.connect = TRUE)
Another approach is to pass the data (table) as an argument to the ore.doEval function:
ore.doEval(function(dat) {
library(ORE)
summary(dat)}, dat = X, ore.connect = TRUE)
Check out this blog post for more information and best practices on the use of ore.doEval and ore.tableApply.
Sherry

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How do i take one layer with multiple selections...

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Message was edited by: SSteele

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