raster (.adf) to shapefile

[wardmaaswinkel]

Hello,

I'm trying to convert a raster file (.adf) to a polygon shapefile, so I can continue with the following steps:

http://gmv.cast.uark.edu/modeling/software-visualization/sketchup/workflow-sketchup/arcscene-to-sket...

If I try 'raster to polygon' I get the following error:

close windowERROR 000864
Input raster: The input is not within the defined domain. ERROR 000863: Invalid GP data type

I understand it has something to do with it being a 'coverage' file, but haven't found a solution yet, so hope someone can help me.. Is there a specific tool I can use?

Thanks,
Ward