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The following data sources you added are missing spatial reference information......

Question asked by yppmark on Mar 8, 2012
Latest reply on Mar 8, 2012 by yppmark
Okay so i've been opening some 1km x 1km aerial photographs in ArcMap. They are in .tif format

When i open them I get the following message:

"The following data sources you added are missing spatial reference information. This data
data can be be drawn in ArcMap but cannot be projected".

How do I spatially reference the files?

I dont undestand this as they open in the correct location after the message has been displayed.

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