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World Shaded Relief Anomaly

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07-19-2010 02:38 PM
CathyWilson
Occasional Contributor
Last Wednesday, I was creating a map using the ArcGIS Online Resource Center "World Shaded Relief" as the background. I was mostly working in Layout view and all of a sudden, after a page refresh, the background wasn't right. It showed flat where there should be hills and hills going east and west where there should be hills going north and south. I zoomed out to get my bearings and was surprised to see that northern Nevada was underwater! (I was especially surprised having recently read the article in the Summer 2010 issue of ArcUser "If the Earth Stood Still" by Witold Fraczek about what would happen if the earth stopped spinning. The answer was similar to what I was looking at!) After doing some experimenting, I discovered that this anomaly only manifested in layout view, not data view. Also, it printed normally, which was good. That meant that I could get my work done. I was working on a deadline, so I didn't explore it any more, but I did a print screen of the view. This morning, I did some searching and found where the shoreline came from - the north coast of Algeria! It's at the same latitude, but a completely different longitude. It seems to be fixed now, but I was wondering if anyone else came across this anomaly.

Thanks,
Cathy
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MikeMinami
Esri Notable Contributor
Cathy,

Just to be sure, it's working correctly for you now, right?

It is possible that the wrong map tile got returned to ArcMap from ArcGIS Online. ArcMap also stores the cache locally so it may have gotten out of sync for some reason. If it ever happens again, you can try clearing the local cache. On the Layer Properties dialog, Cache tab, you can clear the local cache.

Hope this helps,

Mike
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