ADMD vs PPL - what is criteria for distinguishing

[pmolzer]

Hi,
I have been working with US and GB data and have noticed that what I
would term 'towns' categorized as either ADMD or PPL feature codes.
For example, id 5213361 or 2657557 are categorized as PPL, but I would
have put them as ADMD.

Also, I notice that admin1 codes are not always applied. For example,
id 2657557 (Aldeburgh) has admin1 code 00, but I know that it lies in
Surrey, which has admin1_code=N5 (suffolk). Is this intentional, or
missing data?

If is spot errors in the data, how can I fix them? Is there a system
for submitting/proposing corrections?

thanks,
Phil

[Marc]

Hi Phil

The data for the US is from the official source United States Geological
Survey (USGS). For "Spring Hill" (5213361) they use the type "populated
place". I would prefer to stick with the official designation whenever
possible.

A different thing is Aldeburgh in the UK (2657557). Ordnance Survey the
national mapping agency classifies it as 'Parish', which corresponds to
ADM3.

Admin codes for the UK are unfortunately missing quite often. See also
this recent forum thread :
http://forum.geonames.org/gforum/posts/list/414.page
Aldeburgh lies in the district "Suffolk Coastal", in the county
"Suffolk". You can correct errors and add missing data directly on the
webinterface :
http://www.geonames.org/2657557/aldeburgh.html or you can send me a file
for a batch update if you have many corrections.

Cheers

Marc

[pmolzer]

Thanks Marc,
I'll keep a running list of errors and submit them if/when they
accumulate.

Are GB districts such as Suffolk Coastal at the ADM1 level?

I see that County of Suffolk is ADM1. Shouldn't it be ADM2?

I can't find 'Suffolk Coastal' in the GB dump (I work offline most of
the time and thus use the dumps rather than the webservice).

If Aldeburgh is ADM3, why doesn't it have that feature_class? Is it
an issue with the software for parsing the ordnance data?

regards,
Phil

On May 15, 1:38 am, Marc <m...@geonames.org> wrote:
> Hi Phil
>
> The data for the US is from the official source United States Geological
> Survey (USGS). For "Spring Hill" (5213361) they use the type "populated
> place". I would prefer to stick with the official designation whenever
> possible.
>
> A different thing is Aldeburgh in the UK (2657557). Ordnance Survey the
> national mapping agency classifies it as 'Parish', which corresponds to
> ADM3.
>
> Admin codes for the UK are unfortunately missing quite often. See also
> this recent forum thread :http://forum.geonames.org/gforum/posts/list/414.page
> Aldeburgh lies in the district "Suffolk Coastal", in the county
> "Suffolk". You can correct errors and add missing data directly on the

> webinterface :http://www.geonames.org/2657557/aldeburgh.htmlor you can send me a file

> for a batch update if you have many corrections.
>
> Cheers
>
> Marc
>
>
>
> pmolzer wrote:
> > Hi,
> > I have been working with US and GB data and have noticed that what I
> > would term 'towns' categorized as either ADMD or PPL feature codes.
> > For example, id 5213361 or 2657557 are categorized as PPL, but I would
> > have put them as ADMD.
>
> > Also, I notice that admin1 codes are not always applied. For example,
> > id 2657557 (Aldeburgh) has admin1 code 00, but I know that it lies in
> > Surrey, which has admin1_code=N5 (suffolk). Is this intentional, or
> > missing data?
>
> > If is spot errors in the data, how can I fix them? Is there a system
> > for submitting/proposing corrections?
>
> > thanks,

> > Phil- Hide quoted text -
>
> - Show quoted text -

[Marc]

Hi Phil

Districts are in the ADM2 level. There is a graphical illustration here :
http://geonames.wordpress.com/2007/04/11/ordnance-survey-administrative-divisons/

ADM1 = counties
ADM2 = districts
ADM3 = parishes

It could make sense to use GOV as ADM1 and shift everything else
downwards. Tough I am not sure whether GOVs are commonly used or not.

'Suffolk Coastal' is not in the dump because nobody has inserted it up
till now.

Regards

Marc