RCaller DataFrame fails when passing data to R in Windows OS

[george-kakarontzas]

Running the test class in https://github.com/jbytecode/rcaller/blob/master/RCaller/src/test/java/com/github/rcaller/datatypes/DataFrameTest.java in windows 10 fails in two tests as shown below. My best guess is the way that the data frame data is transferred to R according to the manual (https://github.com/jbytecode/rcaller/blob/master/doc/rcaller3/rcaller3.pdf, page 6). There it mentions that "In order to obtain the best performance and avoid any data loss, RCaller exports the data contained in the DataFrame object as a csv file. The path of the file will be transferred to R and it will be imported using the function read.csv on the R side.". Maybe in the path that is transferred backslashes are not escaped properly for windows OS? Tests in error: writeBigDataFrame(usertests.DataFrameTest): R command failed with error. Reason: Error: '\d' is an unrecognized escape in character string starting ""c:\d" writeDataFrameToRAndGetMean(usertests.DataFrameTest): R command failed with error. Reason: Error: '\d' is an unrecognized escape in character string starting ""c:\d"

Tests run: 13, Failures: 0, Errors: 2, Skipped: 0