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Data shifting FME/ArcGIS

  • May 22, 2014
  • 2 replies
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When I bring lat/long data stored in SDE (NAD 83) into FME and run it through all of my transformers associated with doing an AreaOnAreaOverlayer the output appears to shift when I compare it to the original data in ArcMap. Here's a zoomed in area. The light purple color is the FME output. Any ideas why it would not maintain the exact integrity of the input data?

 

 

 

Best answer by david_r

Hi,

 

 

it's difficult to tell without seeing the workspace. Are you perhaps doing some implicit snapping somewhere? Clipping against two almost similar datasets? Rounding of coordinates?

 

 

David
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2 replies

david_r
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  • Best Answer
  • May 23, 2014
Hi,

 

 

it's difficult to tell without seeing the workspace. Are you perhaps doing some implicit snapping somewhere? Clipping against two almost similar datasets? Rounding of coordinates?

 

 

David

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  • Author
  • May 23, 2014
David I had figured it out at the end of yesterday. But you get the best answer because you hit on something I was doing that was causing the issue. I was rounding the coordinates. When I took that transformer out everything overlayed perfectly. Thanks for answering!!!