I have a region (measures 497.8 sq km) over which I apply a 1 km square cell grid. I save only cells intersected by region (651). Then I update a column of the cell table by the "overlap" of obj with o = selection.obj of region. The sum of those "overlapped" areas gives me 518.8 sq km which seems to me to be an unacceptable result..
That the total area is calculated in spherical or cartesian does not change much. Particular condition: the region is formed of 32 polygons (some are islands) and there are some holes (lakes, rivers) I am working with 6.5 Are there any known-to-you-but-not-to-me problems with that function under such circumstances? Thanks for any clue Jacques Paris e-mail [EMAIL PROTECTED] MapBasic-MapInfo support http://www.paris-pc-gis.com --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 8391
