topic Re: Mosaic Dataset of Orthophotos offset in ArcGIS Explorer Desktop Questions

Mosaic Dataset of Orthophotos offset

CarstenBerens — Thu, 23 Aug 2012 12:55:31 GMT

Hi,

we had created a mosaic dataset of our orthophoto database (around 2600 photos). This works fine in ArcMap. To use it in ArcGIS Explorer Desktop we saved it as a ArcGIS layer file and load it into a ArcGIS Explorer Map. While zooming in to a scale around 1:2000 it jumps 150m in north-est direction. Zooming further to 1:500 the orthophotos are displayed on the correct place again.
Any sugesstions?

Best regards

Carsten

Re: Mosaic Dataset of Orthophotos offset

norie — Thu, 23 Aug 2012 14:46:15 GMT

When zoomed out you'll be utilizing the overviews and pyramids. As you zoom in farther, you'll start seeing the individual orthos.

Since they look fine when zoomed out, I suggest regenerating your overviews and depending on your setup possibly pyramids too.

Right click on the mosaic dataset->Build Overviews. Expand the Overview Generation Options and uncheck both Generate Missing Overview Images Only and Regenerate Stale Overview Images Only.

Re: Mosaic Dataset of Orthophotos offset

CarstenBerens — Fri, 24 Aug 2012 06:21:58 GMT

Hi,
the question is why the mosaic dataset is displayed correctly in ArcMap/ArcCatalog?
In ArcMap there are no jumps between ~1:2000 and ~1:500? It is only in ArcGIS Explorer Desktop.

best regards

Carsten

Re: Mosaic Dataset of Orthophotos offset

norie — Tue, 28 Aug 2012 15:26:16 GMT

Well that could be projection issues. If you start with a blank map, ArcMap will use the spatial reference of the first dataset you give it. In AGX the spatial reference is WGS84 by default.

Re: Mosaic Dataset of Orthophotos offset

CarstenBerens — Mon, 03 Sep 2012 09:16:46 GMT

Hi,

it was the wrong 2D CS in the Map Properties. Thanks