Contour lines not drawing

[grahamlangley-edwards]

Hello, I am trying to create a contour shapefile from a mosaicked DEM using ArcGIS 10.  When I use the Contour tool in Spatial Analyst, it creates a new layer but it does not draw.  When I Zoom To Layer it zooms out to 1:120,000,000 and still nothing is drawn.  Not sure what the problem is, if anyone has any suggestions I would greatly appreciate it. 


Thanks,

Graham

[SteveLynch]

Try the following;
- CopyRaster( mosaic raster to raster (.img or fGDB or grid))
- Contour the above raster

Steve

[grahamlangley-edwards]

Hi Steve,

Thanks for your reply.  I used the Copy Raster tool to create a new raster using the .img file extension, but the contour lines still would not draw.  I also tried the .asc and .gdb file extensions, but received an error saying that they were "Invalid for the output raster format".  I also tried to Copy Raster using .tif, but again it would not draw.  I've scoured the forums and can not find any info on this, any other suggestions?

Regards,

Graham

[grahamlangley-edwards]

So I figured out that I just needed to reproject the DEM into the same coordinate system as the data frame, then the contour lines draw fine.  Hope that helps anyone else with the same problem...