- From: David Woolley <forums@david-woolley.me.uk>
- Date: Thu, 28 Mar 2013 23:00:56 +0000
- To: "Mattingly, F Darrell" <darrell.mattingly@uky.edu>
- CC: WAI Interest Group <w3c-wai-ig@w3.org>, "Guettler, Karen M" <kmguet2@uky.edu>
Mattingly, F Darrell wrote: > > I’m working on a project to teach mathematical concepts. What is the > best manner to describe graphs, such as the one below Mathematics is about being precise. There is no such thing as an alt tag in HTML. I think you mean an alt attribute. I don't think it is possible to answer the question without knowing the educational point that is being made in the particular case, however, I suspect what you really needed was longdesc, except that it was never usefully supported by mainstream browsers and may well have been removed. Without longdesc, I think, as a minimum, you will need to include a link to a textual description in the main text. alt, in this case, can really only convey enough for someone already familiar with the concepts to know what the intention of the diagram is. I don't think it can cover enough for someone who is expected to learn those concepts. -- David Woolley Emails are not formal business letters, whatever businesses may want. RFC1855 says there should be an address here, but, in a world of spam, that is no longer good advice, as archive address hiding may not work.
Received on Thursday, 28 March 2013 23:01:30 UTC