Comments on: Using Microformats to populate Google Map

By: John C

John C — Sun, 04 Oct 2009 22:08:31 +0000

As Gabriel pointed out to me there an updated version of this article:

http://www.svennerberg.com/2008/11/populating-google-maps-with-microformats-revisited/

I managed to get this working despite being new to Web development.

By: John C

John C — Mon, 28 Sep 2009 19:42:00 +0000

A great example which inspired me to try and do the same.

Is it possible to see the php page?

I’m fairly new to Web development and have copied your example with my own data.

My version works fine in Firefox and Chrome but fails in I.E 8.
The markers do not display/are not visible.

Comparing my code to yours would be very helpful.

By: Gabriel Svennerberg

Gabriel Svennerberg — Sat, 14 Jun 2008 11:50:49 +0000

@Andy: I’m sorry I didn’t understand you at first but now I see what you mean. The end date should, for machines, be one day after what we humans consider the actual end day. So the example is in fact wrong. As they say on the microformat wiki:

Note 5: The difference between the DTEND ISO8601 date (2005-10-08) and the human readable date (7) is NOT a mistake. DTEND is exclusive (http://lists.osafoundation.org/pipermail/ietf-calsify/2005-September/000769.html), meaning, that the event ends just before the DTEND. Thus for events which start on one day and end on another day, the DTEND date must be specified as the day after the day that a human would say is the last day of the event.

Sorry about that mistake. I will update the example with the correct dates. Thanks Andy.

By: Gabriel Svennerberg

Gabriel Svennerberg — Thu, 12 Jun 2008 19:31:07 +0000

@Andy: Thanks for the information and for the link! I didn’t know that, though I have vaguely reflected over the use of to mark up microformats. Now, after reading haccessibility, I’ve come to the insight that besides the unfortunate effect to people using screen readers having to listen to a really long number, there’s very little point in providing a “machine adapted” explanation to the “human adapted” display of the dates. Therefor it should be better to use for example a to mark up dates.

Regarding the use of dtend in hEvent I think you are wrong. At least from what I can make out of it on http://microformats.org/wiki/hcalendar it seems perfectly valid.

By: Andy Mabbett

Andy Mabbett — Thu, 12 Jun 2008 18:38:06 +0000

That haccessibility link should be to http://www.webstandards.org/2007/04/27/haccessibility/

By: Andy Mabbett

Andy Mabbett — Thu, 12 Jun 2008 18:36:00 +0000

Your end date mark-up: 31 Maj is incorrect. End dates are exclusive in hcalendar, and that should be, blieve it or not: 31 Maj which is clearly an even greater abuse of the ABBR element than the start date markup. For more on the latter topic, see haccessibility.