Hi,
I try to get the interactive R nodes working. Im using Knime 2.9.2 and R 3.0.3 on a Linux 64bit system.
Whenever editing an interactive R node, I get the following error on the node's R console:
Error in identical(simplify, FALSE) : 7 arguments passed to .Internal(identical) which requires 5
This error is repeated 4 times when opening an interactive R node for editing the R code.
When I run any R command within this node, I get this same error again, together with a reference to the functions "png" and "dev.off" that could not be found:
Error: could not find function "png" > sin(0) [1] 0 Error: could not find function "dev.off" Error in identical(simplify, FALSE) : 7 arguments passed to .Internal(identical) which requires 5 Error in identical(simplify, FALSE) : 7 arguments passed to .Internal(identical) which requires 5
Moreover, no package except "base" seems to be available to R:
Error: could not find function "png" > median(c(1,10)) Error in identical(simplify, FALSE) : 7 arguments passed to .Internal(identical) which requires 5 Error: could not find function "median" Error: could not find function "dev.off" Error in identical(simplify, FALSE) : 7 arguments passed to .Internal(identical) which requires 5 Error in identical(simplify, FALSE) : 7 arguments passed to .Internal(identical) which requires 5
(The sin() function is from the "base" package, while median() is from the "stats" package.)
Running R directly on the shell is no problem, everything works just fine.
Has anybody else encountered this problem before? Any hints how to solve it?
Best, Andreas
Edit:
Just compared the interactive R Snippet with the old R Snippet and surprisingly found that the old node seems to work well!
I pointed both plugins to the same R installation in the Knime preferences. When using the same R code for both nodes, the old one runs perfectly, while the interactive one shows the above described problem.
My test code was just
R <- sin(0)
for the old node and
knime.out <- sin(0)
for the interactive one, respectively. The old one returns the following (correct) table:
| Row id | x |
|---|---|
| 1 | 0 |
In contrast, when evaluating this script within the interactive one, the mentioned error messages show up in the R console. When trying to execute the node, I get the following error on the Knime console:
ERROR R Snippet java.lang.IllegalStateException: Execution of R script failed: leere (Null Bytes) Eingabedatei ERROR R Snippet Execute failed: Execution of R script failed: leere (Null Bytes) Eingabedatei
where "leere Eingabedatei" means "empty input file".