Rich,

If you plot that data in Excel, it's a linear function from (5100,5000) to (7500,7500) so it shouldn't be that hard to emulate...

>Here is some example BAND HEIGHTS and OBJECT HEIGHTS in FRUs:
>

BAND    OBJECT
>HEIGHTS HEIGHTS
>5000	5000.000
>5100	5000.000
>5200	5104.167
>7400	7395.833
>7500	7500.000

>
>Now all we have to do is right a function to emulate that! <bg>