I have been using the spherical algorithm to calculate the area of field
polygons since upgrading to MI Pro 5.5. Is this the correct way for use with
Ordnance Survey data which is tied in to the British National Grid? The
reason that I ask is because I have been sent and Arc View shape file
Thanks to all for the suggestions so far. Here's some more information from
further experimenting.
The problem seems to be restricted to objects that cross or touch the 180
degree line in any way. If you click on the triangles and drag them one
pixel away from the 180degree line and the pole,
