Alexander Kowarik

In the group x[x$d1=="R1","x"] no observation is >2, so the error is correct. But the error message is not really easy to get.

1. macOS 12.1 2. for me only test_xgboost.R fails (test_crossValidatiion.R runs without error or warning) 3. no, this only changes the numerical values in the error message 4. 1.5.0.2 yes,...

@jentjr this is related to your pull request https://github.com/alexkowa/EnvStats/pull/1

Steve, yes please. Implement it.

Great. Thank you.

You can simply write in the description of the pull request closes #X where X is in this case 28. See https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue

Good idea to sample. Yes, let's do that for XGBoost too if someone has time to implement it.

Sure. But is there a strong argument to remove them. I mean some of them are merged and implement a certain functionality or method, fix a certain issue, some come...

The error is unfortunately not very specific. Try changing the working directory to a directory where you are sure you can write.