Line data offset on one computer but not another, why?

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01-24-2018 07:28 AM
DuaneTreadon
Occasional Contributor

Hi all,

So today we are experiencing an interesting anomaly that I have never come across before.  Our Engineering Department has a standard map that they access for viewing various utility and road system data sets. It is a common map saved to a folder on the sever.  Today when they opened the map (on various computers) they noticed that items like road center line and other line were off by about 25 feet from the aerial imagery (ESRI World Imagery).  That part is not too crazy to us, we know that  there are quite a few variables that could have caused this. 

 

Now for the crazy part.  In looking into this issue I opened the same map from the same folder on the server using the same version of ArcMap and same version of the data.  When I did this, everything lined up as expected.  There was no offset of the lines.  Several of the others using the map closed ArcMap, rebooted their computers and opened the same map, they got the same results as before where the lines were offset by about 25 feet. 

 

So any ideas on why when they open the map they are showing an offset of the data by about 25 feet and yet when I open the same map on my computer everything lines up correctly.  Is there some setting or configuration that we are missing? 

 

Thanks all for your assistance in the mystery of the offset lines.

 

Duane 'JT' Treadon, GISP

Director of GIS | City of Thomasville | Engineering

Office: (229) 227-4023 | Cell: (229) 221-5991

111 Victoria Place | P.O. Box 1540 | Thomasville, GA | 31799

The Power of Community. The Power of Service.

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DuaneTreadon
Occasional Contributor

Thanks for the reply.

The local cache was part of the issue.  My computer's cache had not been cleared.  Once I did that my imagery looked like everyone elses.  Unfortunately that was the imagery that was blurry and offset.  In talking with others we did determine that it was due to ESRI's imagery update to the +Vivid.  It appears that our area at this time does not have the clear crisp accurate imagery.  For now we have found another source for our imagery that is crisp and lines up with our data.

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MelitaKennedy
Esri Notable Contributor

Speculation: a local caching issue that rebooting cleared. When was the last time you opened the map prior to this? So what caused the problem? A bad update of the imagery that was fixed quickly maybe?

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DuaneTreadon
Occasional Contributor

Thanks for the reply.

The local cache was part of the issue.  My computer's cache had not been cleared.  Once I did that my imagery looked like everyone elses.  Unfortunately that was the imagery that was blurry and offset.  In talking with others we did determine that it was due to ESRI's imagery update to the +Vivid.  It appears that our area at this time does not have the clear crisp accurate imagery.  For now we have found another source for our imagery that is crisp and lines up with our data.

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