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

[Shu Higashi]

Hi,

2011/10/25, Shu Higashi <s_higash at mua.biglobe.ne.jp>:
>> First, which Projection method to use in JOSM? Mercator? Geographic?
>
> WGS-84 ? (I don't know JOSM's parameter)

I think it's WGS-84.

I checked the both side of the railway which has a GPS log and found
the offset values were mostly the same.

Please check the wiki as below.
http://wiki.openstreetmap.org/wiki/Turkey_Earthquake_2011#Inaccurately_placed_Bing_imageries


>>> <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
>>>>>
>>>>
>>>
>>> _______________________________________________
>>> HOT mailing list
>>> HOT at openstreetmap.org
>>> http://lists.openstreetmap.org/listinfo/hot
>>>
>>
>>
>>
>> --
>> cheers,
>> maning
>> ------------------------------------------------------
>> "Freedom is still the most radical idea of all" -N.Branden
>> wiki: http://esambale.wikispaces.com/
>> blog: http://epsg4253.wordpress.com/
>> ------------------------------------------------------
>>
>