How to get the value of a particular row and column in an Empirical distribution table? Seems like it should be able to be referenced like a global table but that doesn't seem to work.
Value in an Empirical distribution
FlexSim 21.2.2
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The data of an empirical distribution is saved in a treenode containing bundle data in the tree of the respective "empirical distribution" object.
Values in it can be accessed with the "getbundlevalue" command.
// Get reference to the node containing the data -
// replace "EmpiricalDistribution1" with the name of the distribution
treenode bundle = Model.find("/Tools/EmpiricalDistributions/EmpiricalDistribution1>variables/data");
// Assign value to variable
double val = getbundlevalue(bundle, <row>, <column>);
Important note: The rows ("entry") and columns ("field") of bundles are 0-indexed.
Thanks Felix. I didn't realize it was saved as a bundle. In code, I need to know how many rows are in the data. In my case, I am specifying an empirical distribution using pairs of values and corresponding percents. Whereas the new Empirical Distribution is more for a set of raw data. It seems that the older approach of using a global table and dempirical (or cempirical) distribution is better for what I need.
If you are using pairs of values and corresponding percents, use the "weighted" option and put your percents as the weights. Then I think you'll have what you are looking for.
I did that initially. However, in some code in the model, I need to know how many rows are in the distribution table. That's were I got stuck since I couldn't just use a table method.
Hello @Allen Greenwood,
That's not quite how Empirical Distributions work. They work like using any other statistical distribution: you define the parameters of the distribution and FlexSim outputs a random value that fits the distribution every time the distribution is accessed. The Empirical Distribution works the same way, except you manually define the parameters.
Does that answer your question?
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