Re: [OSM-talk-ie] rectifying map

2015-03-26 Thread Caroline Lewis
ok - thats a relief!
thanks
c
> On 25 Mar 2015, at 23:38, Dave Foley  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: carolinele...@eircom.net
>> Date: Wed, 25 Mar 2015 21:42:48 +0000
>> To: talk-ie@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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Re: [OSM-talk-ie] rectifying map

2015-03-25 Thread Dave Foley
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: carolinele...@eircom.net
> Date: Wed, 25 Mar 2015 21:42:48 +
> To: talk-ie@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.
> 
> 
> ___
> Talk-ie mailing list
> Talk-ie@openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-ie
  
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[OSM-talk-ie] rectifying map

2015-03-25 Thread Caroline Lewis
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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