[HOT] Fwd: 2011-10-23 10:41:21 (M 7.3) EASTERN TURKEY 38.6 43.5(378fb)

maning sambale emmanuel.sambale at gmail.com
Tue Oct 25 04:56:00 BST 2011


+1

> I think we need some cooperation to fix these complexed situation.
>
> How about these steps?
>
> 1.define offset value for JOSM and Potlatch

First, which Projection method to use in JOSM? Mercator? Geographic?
> <JOSM>
> offset: 30;-14 ?
>
> <Potlatch2>
> diff(offset?): +0.00026, -0.00003
> for example
> (Bing)43.31880, 38.52070
> (Ground)43.31906 , 38.52067
> http://www.openstreetmap.org/?lat=38.520231&lon=43.317905&zoom=18&layers=M
>
> 2.Re-align featured ways
> -primary roads
> -secondary roads
> -railways
> -waterways
> -some huge objects
>
> 3.Re-align all objects
> I think JOSM would be useful to move objects at once.
> (Though I'm not good at using JOSM)
>
> Shu Higashi
>
> 2011/10/25, Shu Higashi <s_higash at mua.biglobe.ne.jp>:
>> Hi, Pierre
>> Sorry for my poor English.
>>
>> 2011/10/25, Pierre Béland <infosbelas-gps at yahoo.fr>:
>>> Higashi showed on 2011-10-24  18:20:19
>>> a map of the railway line in Van from Potlatch2.
>>
>> My screenshot.
>> http://wiki.openstreetmap.org/wiki/File:Offset_van_turkey.png
>>
>>> Without applying any offset to the Bing Imagery, I obtain a different map
>>> in
>>> both Potlatch2 and JOSM. The roads, the railway and the building over the
>>> railway are apparently properly aligned.
>>>
>>> See map from Pottlatch2 at the following url :
>>> http://pierzen.dev.openstreetmap.org/hot/railway-van-turkey.jpg
>>
>> Yes. your screenshot shows that roads and buildings arecorrectly aligned.
>> But, when I showed a GPS trace (water color) it's slightly off toward
>> South East.
>> So I adjusted background imagery railway onto GPS trace using
>> Potlatch2 toward South East. (My screenshot)
>> Then, Roads, buildings and a railway need adjustment toward South East
>> slightly.
>>
>> Shu Higashi
>>
>>> Pierre Béland
>>>
>>
>
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>



-- 
cheers,
maning
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wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
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