Knowledge Base

SequentialValue and IndexValue

The functions SequentialValue and IndexValue can be used for bootstrap analysis, or for using an existing set of pre-generated random variates in a model.

IndexValue returns a value, starting from 1, that increases by 1 in every trial.

SequentialValue returns a value from a range of input values, in order.

Suppose you have a set of data,

and use the sequential value function.

When you run a simulation, in the first trial the value will be 100; in the second trial, the value will be 102; then 97 in the third trial; then 96; and so on.

Both functions can take a limit - a maximum value in the case of IndexValue, and a count in the case of SequentialValue. In both cases if the limit is exceeded, the functions will roll over – starting again from 1 in the case of IndexValue, or starting from the first value in the set for SequentialValue.

Similar functions with slightly different properties are

UniformRangeSample - selects at random from a range of values, without replacement.

ChoiceValue - selects at random from a range of values with replacement.

WeightedChoiceValue - the same as ChoiceValue, but with an additional range representing selection weights.

Search the Knowledge Base

Structured Data LLC

Structured Data LLC is a software services and consulting firm founded in 2005, with offices in New York and San Francisco.

More Information?

If you'd like more information, please enter your email address below and we will get in touch.

Contact Us