I'm getting this: cvc-datatype-valid.1.2.1: 'p' is not a valid value for 'integer', regardless of what I try from the validator here: http://www.nexml.org/nexml/validator. This includes for files created from the translator here: http://129.237.138.234:5000/us2ml/index. Also- it would be really nice to provide some example files of full matrices in nexml in an immediately evident place, I had to dig for some time to find the translator.
Matt