Thread: 3D Interpolation from a graph

Hi All,

I need to calculate TAKE OFF DISTANCE - FEET with OBSTACLE HEIGHT - 50 ft with given predefined OUTSIDE AIR TEMPERATURE, WEIGHT LBS, RUNWAY GRADIENT and WIND from the the attached "PERFORMANCE.gif" file.
I am able to digitize the values from the graph.

Possible solution might be the table from the post

http://www.excelforum.com/excel-prog...z-f-x-y-z.html

**3D Interpolation x,y,z -> f(x,y,z)**, but I need the macros. I attached the file "3D Interpolation.xls".
I am able to fill the table with digitize data from the PERFORMANCE graph.

Thank you in advance!

Jonev