DIAdem mathscript

[Chuck@Eaton]

Just created a mathscript whwith a fairly simple equation.  When I execute the script, the following error message appears "Cannot transfer result data".  I understand that the MathScript function executes LabView and I do have LabView Professional 8.5 loaded on the machine.  What am I missing?

[D-Cubed]

Hi Chuck@Eaton,

Are you using LabVIEW 8.5 with the MathScript option? 

If you are, could you post the script you are trying to execute?

Warm Regards,

[Chuck@Eaton]

Daniel,

Yes, I am using LabView 8.5 with the Mathscript option.  Confirmed that the license is properly activated.  A simple numeric 1 + 1  = 2 script works.  See attached for the script I am having problems with.  I assumed a waveform is treated as a 1D array.  I did try matrixed array but that also did not work.

Chuck

[Brad_Turpin]

Hello Chuck,

That particular formula would be easier to handle in DIAdem's Calculation Manager, have you ever looked into that feature?  Exercise 6 of the DIAdem 2012 Hands On Exercises shows an example of how to use it starting at step 6.27.

http://zone.ni.com/devzone/cda/epd/p/id/5393

Brad Turpin

DIAdem Product Support Engineer

National Instruments

[Chuck@Eaton]

I will give it a try.

Thanks.

[Chuck@Eaton]

I loooked for the calculation manager but it does not appear to be in version 11.0.

[D-Cubed]

Hi Chuck,

The Calculation Manager feature did not become available until DIAdem 2010.  Were you able to try Daniel de Gaston's suggestion:

---

Hello Chuck,

      I am 
looking at your input function.
      Efficiency 
= Abs(Input_Torque*Input_RPM)/ ((Abs(LW_Flap_Torq) + Abs(RW_Flap_Torq)) * 
Abs(Output_RPM)).

      This is a tough concept and easy to make both logical and syntax errors depending on what exactly you want to do.  To do a point wise multiplication of two Vectors or 1-D arrays we need to use the '.*' in order to distinguish between point wise multiplication and matrix multiplication.  I believe the following line of code will work.   
Efficiency = Abs(Input_Torque.*Input_RPM) ./ ((Abs(LW_Flap_Torq) + Abs(RW_Flap_Torq)) .* Abs(Output_RPM)).

Daniel de Gaston
Applications 
Engineering
National Instruments

---

Please let me know whether this suggestion worked.

Warm Regards,