I have a need to import map objects into a table from various mif files via a MapBasic app, but I need to prevent map objects from being appended into the table more than once. I was thinking of computing a hash index based on various object properties (e.g. type, centroid, length, perimeter, area, etc.) and using that to see if an indentical object is already loaded. Has anyone tried that approach, or does anyone have any thoughts about this method? Are there other, perhaps simpler or better techniques to screen imported objects for duplicates? (I can't use the data attributes because I can't gaurantee that a unique key can be maintained.) TIA, - Bill Thoen ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
