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I've got two tiff files that I have georeferenced to two
different projection systems. This is because the tiffs are of maps of two
different dates. I have done this in FME, but also want to project the old tiff
into the new projection system. Therefore I need to complete two stages within
one FME session:

 

Number 1, Georeference both tiff files into two different
coordinate systems.

 

Number 2, Reproject one of the tiff files into the same
coordinate projection as the other tiff.

 

This is what I’ve tried to do so far, but the workspace isn’t
working and is showing up as blank in the inspector.

 

 

Does anyone know where I am going wrong?

 

I think you're not getting a black screen in the Inspector but rather
it's showing the 2 tiff files in one projection while one of them is
actually in a different system with a very different range of
coordinates. That way both of them appear really tiny and far apart, giving the appearance of a blank screen. If you draw a selection box in the map view it should still select both rasters.

 

 

My initial guess would be that there's something wrong with the georeferencing and/or reprojection. A few things you can check:

 

  1. View the georeferenced tiff's in the Data Inspector after step 1, but individually. If you set a background map (Tools -> FME Options -> Background Map) DI will attempt to reproject on the fly to the projection of the background map, this allows you to check whether the tiff's are properly georeferenced.
  2. If they are properly georeferenced there's probably something wrong with the reprojection. My personal preference is to use a Reprojector and always specify the source coordinate system (don't use "read from source"), if it's known of course (but I assume it is in this case). So doublecheck those settings. If you view them in the Data Inspector afterwards make sure to switch off the background map so it will not reproject on the fly, this allows you to check whether both of them are in the same system.
Hope this helps.

 

 

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