[OSM-talk-ie] rectifying map

Caroline Lewis carolinelewis at eircom.net
Thu Mar 26 07:53:14 UTC 2015


ok - thats a relief!
thanks
c
> On 25 Mar 2015, at 23:38, Dave Foley <dafo43 at outlook.ie> wrote:
> 
> It doesn't seem too bad to me, it's hard to get the map to exactly match in all points. Obviously maps with mostly water will be harder to align but even on  inland maps I still refer back to Bing aerial photos to make edits and use the townland maps mainly for names and to get a rough idea of the boundaries.
> 
> Dafo
> 
>> From: carolinelewis at eircom.net
>> Date: Wed, 25 Mar 2015 21:42:48 +0000
>> To: talk-ie at openstreetmap.org
>> Subject: [OSM-talk-ie] rectifying map
>> 
>> Hi everyone
>> I am really struggling to rectify a map (05-05 SW) as it is so misaligned i can’t add many control points - i have 11 but one is in the ocean to see if it would help match the maps
>> I have been adding and deleting control points all day to try and get a erasable coverage but the map has been doing some peculiar warping.
>> It is mainly ocean so its hard to get a good spread and there are not many roads to match - 
>> should i keep trying to find vaguely matched control points or is there some technique to overcome this problem
>> thanks
>> c.
>> 
>> 
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