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Data doesn't align after export from SQL DB to File Geodatabase


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Hello,

I am extracting data from a sql DB and exporting as file geodatabase. But when I compare them in Arcmap the data is not aligned it is next to each other but not on top of each other why would that be? I have same projection on both the data sets.

Thanks

Nikki

6 replies

virtualcitymatt
Celebrity
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Hmm can you expand on 'Next to'?

It definitely sounds like a projection issue. What is the coordinate system? How does the data look in the FME Data inspector before you export it to database with a background map on?

It sounds like a different ellipsoid maybe? This is common when the data are out by around 200 meters or so. ​


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  • Author
  • October 15, 2020

Thanks for your reply!

Planer distance is .00108 inches between 2 lines.

Coordinate system is NAD 83 State plane.

It looks fine and aligned with background map in data inspector.

Thanks!


virtualcitymatt
Celebrity
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Ahh, only a little bit. Hmm - You should check the settings in your output Geodatabase file. If I remember there is something like a precision or grid precision in Geodatabase. I think by default the precision is 0.001 or something like that. I think you can check it in ArcMap or Catalogue, not quite sure where though. It could be that output vertices are being aligned to this grid during output.

 

You should be able to choose a template Geodatabase to use when writing. In this case you can set the precision as you like it and not have your data rounded.

 


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  • Author
  • October 22, 2020
virtualcitymatt wrote:

Ahh, only a little bit. Hmm - You should check the settings in your output Geodatabase file. If I remember there is something like a precision or grid precision in Geodatabase. I think by default the precision is 0.001 or something like that. I think you can check it in ArcMap or Catalogue, not quite sure where though. It could be that output vertices are being aligned to this grid during output.

 

You should be able to choose a template Geodatabase to use when writing. In this case you can set the precision as you like it and not have your data rounded.

 

I couldn't find those settings.

Thanks

Nikki


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  • October 22, 2020
nikkikaur wrote:

I couldn't find those settings.

Thanks

Nikki

@nikkikaur​  Your source database: "sql DB ". Is this SQL Server or Geodatabase (ArcSDE) on SQL Server (or another database. Can you confirm that the source database is in the same coordinate system as the destination Geodb?


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  • Author
  • January 21, 2021
nikkikaur wrote:

I couldn't find those settings.

Thanks

Nikki

markatsafe it is SQL DB. yes the source and destination Coordinate system is same.

Thanks!


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