I have got the polygon that I want to flatten with BLN2SHP and ShptoVect but am having problems. No info came with the utility so I assumed they were Lat/Long. I created the file as follows5,0-39.547745 174.262669433333-39.5497226786223 174.274204423461-39.5586921286098 174.270790956547-39.5584324340667 174.262461857393-39.547745 174.262669433333As this is what SceneGenX gave me as it is S/EWhen I use bln2shp nzha.bln FL I get an error message"unrecognised point on line 2. Data on line 2 is a line, but output file typoe is polys.Anyone able to help?

hello..the correct format for flattens has been given by Luis in the pinned topic above (exclude Autogen...) :" To put the elevation value in the bln, simply add a comma, and the elevation in metres, for example:21,0-62.8405616143641,17.9049018297125,3-62.8405595003106,17.9044590943,3-62.8427041476847,17.9044213750783,3-62.842709204644,17.9037198867089,3...... "I think you forgot to edit your file with a comma beetween lon and lat, then to specify the altitude in meters.regards, pascal

Thanks, Missed the missing comma and added the elevation and works like a charm.Cheers