[uf-discuss] Geo Elevation Data

Andy Mabbett andy at pigsonthewing.org.uk
Tue Mar 13 00:01:16 PST 2007

In message <004001c76527$85ca0e10$bc08a8c0 at nzto22>, Paul Wilkins
<pmw57 at xtra.co.nz> writes

>> My first question is whether elevation has been proposed as part of
>> the geo draft specification?  Adding the third dimension would seem
>> natural and would add additional precision when adopted.
>Unfortunately the third dimension is being rejected at this time.

How very two dimensional!

> However, if the vCard spec is updated to include an altitude
>component, then it will definately become a part of the hCard spec too.

I have yet to see any good reason why hCard (and Geo) cannot have extra
fields, which are simply dropped when generating vCards (likewise
hCalendar - see the "date of death" debate)

>> My second question is whether or not, for line data, it is acceptable
>> to include multiple latitude and longitude classes, in sequence, which
>> make up the line in sequence or if there is a better way to do it?
>What kind of use do you envisage web tools being able to use that line
>sequence information for?

Route mapping?

Boundary description?

>This may be a case where something greater than the Geo microformat
>(which is point specific) is required.

There is no reason why this could not be an extension of Geo.

Note also:


Andy Mabbett
            *  Say "NO!" to compulsory ID Cards:  <http://www.no2id.net/>
            *  Free Our Data:  <http://www.freeourdata.org.uk>
            *  Are you using Microformats, yet: <http://microformats.org/> ?

More information about the microformats-discuss mailing list