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measure modify computed

Allows you to modify an existing computed measure

Adams/View computed measures allow you to create measures in the Adams/View expression language that can be evaluated before a simulation or any time after. You build them using design-time functions and typically use them in the initial model set up.

An Adams/View computed measure is convenient because it can reference any Adams/View variable. For example, if you create two measures and you want to add or subtract them, you can use an Adams/View computed measure to do so. You can also compute data from a run-time measure.

Format:

 

measure modify computed
measure_name=	existing computed measure
new_measure_name =	new name for the measure
text_of_expression=	string
units=	string
create_measure_display=	boolean
legend=	string
comments =	string

Example:

Assuming that ADAMS_KE is an existing measure of the kinetic energy of a pendulum and MY_KE is an existing analytical measure if the kinetic energy.

.

measure modify computed
measure_name =	my_computed_measure &
new_measure_name =	ke_comparison_measure &
text_of_expression =	“100*(.model_1.adams_ke - .model_1.my_ke)/322.6” &
units =	“no_units” &
legend =	“measure comparison of analytical and kinetic energy results”

Description:

 

Parameter	Value Type	Description
measure_name	Existing measure name	Specifies name of the existing computed measure to be modified.
New_measure_name	New measure name	Specifies the new name for the measure.
text_of_expression	String	The TEXT_OF_EXPRESSION parameter defines the computation to be performed by the function. Remember that the value of this argument should be a character string, NOT an expression.
units	String	Specifies units of the measure.
create_measure_display	Yes/No	Specifies whether the strip chart has to be displayed of the measure.
Legend	String	Specifies the text that will appear at the top of the created measure.
comments	String	Specifies any comments.

Cautions:

1.

Be careful, however, about the changes you make in your model. Making changes can cause a potential problem because model changes can invalidate the accuracy of any measure that depends on the results of a simulation. The simulation redefines the model data and re-evaluates your Adams/View computed measures.