prldb wrote:I have also encoutered this error message. Searches in the MARK book have not yielded any hits. I first took the error message to imply that the group data was incorrectly entered in the inp file but various checks revealed no errors. Does the error message mean that there is insufficient data to support the specified groups for the analysis? i.e., that the data is too sparse for the specified groups? Can anyone confirm this is the intended meaning of this error?
Two points:
1\ this has nothing to do with 'analysis', per se, so I'm moving it to the 'software problems' subcategory.
2\ MARK has no error messages that 'pass judgement' on sufficiency (or not) of your data (although I've suggested to Gary that it would be 'fun', if not useful, to introduce some). The error message you report reflects either (1) problem with your input file, (2) problem with how you're specifying groups in the setup, or (3) an interaction of (1) and (2). About all you can do is post a snippet of your .inp file (not the whole thing), and perhaps some obvious problem will emerge. It isn't discussed in the book because - quite simply - if you're input file is correct, and you setup the problem correctly, you'll never see this error message.