Compound Classification - RPM, Load and Fuel Consumption

[Hannah19]

I have engine data for Speed, Load and Fuel Consumption. I want to create a HIstogram for this data, and plot this in the form of a 3D Characteristic Diagram. With the histogram classes Speed (RPM) and Load (Nm) on the x and y axis and % Fuel Consumption on the x-axis.

I have so far used ChnClassXRedXY to create 2D Histograms for Speed and Fuel, and then Load and Fuel, but can not figure out how I do this within the Compound Classification. I have coded up a For Loop but my data sets are large and this is taking a long time to run.

This question was asked by Nate back in 2011 but no answer was provided.

https://forums.ni.com/t5/DIAdem/Load-Collective-Duty-Cycle-calculation-in-DIAdem/td-p/1626574

Any help please?

Hannah

[Hannah19 · Accepted solution]

I have solved the problem, just noticed the 2 X channel option in the Reducing Classification Method. Never really thought of the problem having two X Channels before.