TRUE if the file is valid, FALSE or error message otherwise
Arguments
file
path to the nexml file to validate
schema
URL of schema (for fallback method only, set by default).
local
logical, if TRUE we skip the online validator and rely only on pure XML-schema validation. This may fail to detect invalid use of some semantic elements.
Details
Requires an internet connection if local=FALSE. see http://www.nexml.org/nexml/phylows/validator for more information in debugging invalid files