[Talk-gb-midanglia] New NPE Mapping
Rowland Shaw
rowland.shaw at gmail.com
Sat Dec 6 22:23:03 GMT 2008
I did take the precaution of comparing the registration with the NPE
website so it's now within a few metres -- as I say it was between 200
and 300 metres out previously...
Would be good if we could get some more GPS surveys in that area
(which at least agrees with the NPE, rather than the mapping in that
area)
2008/12/6 Peter Miller <peter.miller at itoworld.com>:
> I may be teaching my grandmother but if I am not ...
>
> Beware that NPE might be mis-registered, so be carefully moving loads of
> stuff because a 50 year old map got wet and distorted in the 1960's!
>
> Personally I like to become comfortable with the registration based on a
> bunch of existing GPS sourced content and then use the NPE if it passes that
> test.
>
> I found one NPE map tile in Wales a while back where the wrong map had been
> loaded!
>
> However other mappers have also found really distorted data where people
> appear not to have actually had a GPS unit and just sort of guessed! NPE
> will be great for those occasions.
>
>
>
> Regards,
>
>
> Peter
>
> On 6 Dec 2008, at 21:23, Rowland Shaw wrote:
>
>> Well, I think I've filled in most of the gaps East of the A12 & A130 in
>> Essex
>>
>> Looks like Southend needs a lot of work as some streets were out by up
>> to 1/8 mile, which meant some were just west of where the next road to
>> the west should've been (etc). I've re-jigged Prittewell, but Thorpe
>> Bay still needs fixing -- can't see many public GPS traces for the
>> area either, which makes it a bit more difficult.
>>
>>
>> 2008/12/4 Peter Miller <peter.miller at itoworld.com>:
>>>
>>> We now have NPE mapping through Potlatch for all of the South of England
>>> (including that bit of south Essex that was missing until now).
>>>
>>>
>>>
>>> http://potlatchosm.wordpress.com/2008/12/04/still-more-npe/
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Regards,
>>>
>>>
>>>
>>>
>>>
>>> Peter
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
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>>> http://lists.openstreetmap.org/listinfo/talk-gb-midanglia
>>>
>>>
>
>
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