Variable Manager
The variable manager allows you to control and edit the variables the program uses. You can load the Variable Manager by going to > Data > Variable Manager or by clicking the
button on the toolbar. When you open the Variable Manager, the following window will pop up:
- Standard Variables - The variables that are included in the software by default.
- External Inputs - These are for the external inputs you may have added, i.e. RPM counters, temperature sensors etc.
- GPS Variables - Variables specific to the GPS, i.e. how many satellites it can see etc.
- User defined variables - These allow you to calculate your own variables based on the ones that already exist with the analysis program.
- Serial Variables - These are variables logged coming into the serial port on the unit.
- Check Available variables – Allows you to check which variables are available to use with Analysis tools, and whether they contain data.
Please note, if you wish to return the variable settings to the factory defaults, you will need to load a file from the /Configuration/ folder of the Analysis software for the hardware you are using call FactoryDefaults.var, where the is replaced with the hardware type. For more information on Loading Variable files, click here.
Choosing And Editing Variables
The Variable Manager allows you to choose which variables the program stores in it's memory. This is useful especially if you need to process data quickly, i.e. if you are track side and need the software to work quickly, or if you have an older machine for the purpose of analysing the data. Please note, any changes that you make will be finalised once you clicked the "Apply" button at the bottom of the Variable Manager. If you wish to have several different variable settings at hand, set the variables up how you want, then save the settings by going to > File > Advanced Load/Saves > Save Variable Information and saving each set of variables you wish to have at easy access.
When you have edited a variable on the Variable Manager, it will highlight in red and suffix "(not applied)" to itself, so that you can tell which variables you have edited
Each variable takes up 4 bytes of memory per sample. i.e. the standard sample rate is 100hz, so each second will take 400 Bytes per variable. If you have 10 minutes of data loaded with 10 variables, this will be 10 minutes * 60 seconds * 100Hz * 10 variables * 4 Bytes = 2400 kBytes. For more on the memory usage, click here.
Next to each of the variables is a small tick icon, IMAGE. This icon has 3 states:
This will process the adjacent variable.
This will not process the adjacent variable.
this means the variable is a "mandatory" one, and that the software needs it to do any calculations. As such, it cannot be turned off.
For almost every variable on the list, the options you can edit are the same:
* Filtering
* Calculus
* Maximum rate of change
- Units
- Variable Name
- Maximum
- Minimum
- Smoothed over
The more basic options include the units the variable is measured in;
the naming of the variable (how it's displayed in the lists etc);
the maximum and minimum values (i.e. simply removes or limits all data above and below set thresholds. For example, if you have defined a user variable of "throttle position" in the software, then the upper limit might be set to 90 degrees and the lower limit to 0 degrees, so if there is a large noise "spike" on the data then it will be mainly ignored during analysis. Another obvious application would be to limit engine speed to between 0 and the rev cut-off point to remove any superfluous spikes.);
and smoothing:
The Smoothed over option will allow you to set a time for the program to smooth over. Please note, that this will not create any lag on the smoothed values. The value you enter for the smoothing will be a time, the smoothing will be done by averaging the values half this time before and half this time after the point the software is working out. Please note that if you enter a large value, this will become slightly inaccurate.
To finalise any changes you have made to the variable information, you need to click the "Apply" button at the bottom of the Variable Manager (note that this button is only enabled once you have made a change). Once you click this button, you will be asked for confirmation:
Applying changes will reprocess the data the data loaded into the software memory, and it will also save the variable information automatically. To learn about saving variable information, click here.
Additional information