[SOLVED] What does "argument to 'which' is not logical" mean in FactoMineR MCA?

What does "argument to 'which' is not logical" mean in FactoMineR MCA?

I'm trying to run an MCA on a datatable using FactoMineR. It contains only 0/1 numerical columns, and its size is 200.000 * 20.

require(FactoMineR)
result <- MCA(data[, colnames, with=F], ncp = 3)

I get the following error :

Error in which(unlist(lapply(listModa, is.numeric))) : argument to 'which' is not logical

I didn't really know what to do with this error. Then I tried to turn every column to character, and everything worked. I thought it could be useful to someone else, and that maybe someone would be able to explain the error to me ;)

Cheers

Solution

It's difficult to tell without further input, but what you can do is:

Find the function where the error occurred (via traceback()),
Set a breakpoint and debug it:
```
trace(tab.disjonctif, browser)
```

I did the following (offline) to find the name of tab.disjonctif:

Found the package on the CRAN mirror on GitHub
Search for that particular expression that gives the error