Suppose we have data under an open license and in some standard machine readable format. What has to be considered on top of that with respect to making the data accessible to people with disabilities, or their tools? Do any standards or best practice guidelines exist for that?
I am roughly aware of WCAG and ISO/IEC TR 29138-X:2009 as well as some key accessibility regulations and intiatives in the US and Europe (see my notes here), but none of them seem to really cover data.
Update: I am especially interested in scientific data, much of which can not usefully be displayed in tabular form – think Magnetic Resonance images or spectra, genome sequences and their annotations, or phylogenetic trees.