Complicated but interesting.....Need some thoughts

[ScaleRobotics]

Here's one way to do it.

You could have 5 lookup tables. One for each boom length. Say the boom is between 10 and 12 meters extended, so in between the values of your chart... For example the boom is at 10.5 meters, and radius is 5 meters. Do the lookup for the nearest known values, so lookup for the 10 meter, and the lookup for the 12 meter boom extension.

4760 at 10 meter extension
4000 at 12 meter extension

Difference between the two extensions is 12 - 10 = 2 meters. We are at .5 meters over 10, so 1/4 the difference. The difference in load is 760 for the two lengths. So 1/4 of 760 = 190.

4760 - 190 = 4570

load at 10.5 meter boom extension, at 5 meter radius = 4570

If you had a radius that was in between two numbers on the load chart, you could do similar lookups on the two radius's which the actual radius is between. Then do similar math.