Units conversion and default preferences
There are various default settings that affect output responses.
To view the current default settings, type
GetDefaults.
To change a default setting, enter the corresponding command.
Example: Units and unit conversions..
The default unit system is kilograms, meter, second.
To change the default unit system, type (for example)
To change the default unit system, type (for example)
SetUnitSystem( gram, cm, hour )
To convert from inches to cm, enter
inchToCm = ConvertUnits( inches, cm )
-> inchToCm = 2.54
To convert 3 slug ft2
to units of kg cm2, enter either of:
conversionFactor = 3*ConvertUnits( slug*ft^2, kg*cm^2 )
conversionFactor = ConvertUnits( 3 slug*ft^2, kg*cm^2 )
-> conversionFactor = 40674.54
To evaluate an expression with symbols being assigned a number with units, try:
SetUnitSystem( kg, meter, second )
Constant a, b, theta = 90 degrees
test = a * b * sin(theta) * t
tryA = Evaluate( test, a = 2 kg, t = 1 minute )
-> tryA = 120*b*sin(theta)
tryB = Evaluate( test, a = 2000 grams, t = 1 minute )
-> tryB = 120*b*sin(theta)
tryC = Evaluate( test, b = 2 km, theta = 30 degrees )
-> tryC = 1000*a*t
tryD = EvaluateAtInput( test, b = 2 km )
-> tryD = 2000*a*t
tryE = EvaluateAtInput( test, a = t, b = tan(t) )
-> tryE = t^2*tan(t)
To list the large-number of available units, type
GetUnitSystem()
Example: Display of numbers (significant digits).
Note: Calculation accuracy is not usually affected by this setting.
x = 1/3 % Shows number with 7 digits (default).
-> x = 0.3333333
SetDigits( 4 )
y = 1/3 % Shows number with 4 digits.
-> y = 0.3333
Compatible with Autolev (legacy software)
To run an AUTOLEV file, enter or include the following command:
To run an AUTOLEV file, enter or include the following command:
SetDefaults( Autolev )
To make MotionGenesis™ Kane be startup AUTOLEV compatible,
edit the file MGDefaultPreferences.txt (in the MGToolbox folder) and un-comment the line
SetDefaults AUTOLEV