getting an equation from a non-linear graph using fitting pallet

[azhwoony]

Hi all,

Is there a simple way to get an equation from a non-linear graph using fitting pallet in Labview?I've always use best fit linear equation, but when it comes to non-linear, i usually use lookup table instead. Since I'm required to implement the same thing but using another software that I'm not really familiar at, it's really helps a lot to use maths equation rather than a lookup table. So I'm hoping the get the function from the graph attached. can anyone give an idea for this?

Thanks.

Az 

[KateB]

Try Exponential Fit or Nonlinear Curve Fit.vi 

[azhwoony]

Thanks KateB,

Actually I used that before but I didn't get a near one. Might be bcoz I don't really know how to use it. So I just used the combination of 5 linear equations. That would give me the most accurate reading.