ArcMap 10.1,

BTM,

.grd from Surfer.

I am trying to generate BPIs and other derivatives from multibeam bathymetry data.

Battling to get this to work and don't understand where it is going wrong.

Attached image shows the result of running the broad scale BPI. A portion of the data is included in the output, however, it is not a sensible result.

Is there an issue with the grid that I am overlooking?

Thanks in advance,

Errol