Hi Peter,
Thanks for your answer.
I made a mistake in the script I copied.... sorry !
The description of the object : listX has 3 column, listBy has 4 column, and
they have 9000 rows :
print(paste("ncol x ", length((listX))))
print(paste("ncol By ", length((listBy))))
print(paste("nrow ", length((listX[[1]]))))
[1];"ncol x 3"
[1];"ncol By 4"
[1];"nrow 9083"
It seems the "large" (=4) number of columns in listBy creates the
troubles...
Thanks,
Guillaume
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