[Talk-us] FCC Antenna Structure Import

Mike Thompson miketho16 at gmail.com
Tue Feb 9 15:39:10 GMT 2010


NAD83 and WGS84 are only horizontal datums.  Here is some information
about the most current vertical datum in the U.S.
http://www.ngs.noaa.gov/faq.shtml#GeodeticVSTide

On Mon, Feb 8, 2010 at 2:35 PM, Jeffrey Ollie <jeff at ocjtech.us> wrote:
> On Mon, Feb 8, 2010 at 3:25 PM, Anthony <osm at inbox.org> wrote:
>> On Mon, Feb 8, 2010 at 12:47 PM, Jeffrey Ollie <jeff at ocjtech.us> wrote:
>>>
>>>    <tag k="ele" v="278.9"/>
>>
>> By the way, what is the datum for the elevation figure?
>
> I don't believe that it is specified explicitly, but the latitude and
> longitude are in NAD83 so I'm guessing that the elevation is the same.
>  I convert the latitude and longitude to WGS84 using the GDAL Python
> bindings, I should probably figure out if converting the elevation is
> as easy as adding a Z component when I do the conversion.
>
> --
> Jeff Ollie
>
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