Data Collectors

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Detailed Description

Another important part of simulation software is output data collectors. They are used to collect data from simulation’s output parameters. Later, these data are analyzed statistically. The data collectors provided by EOSimulator are histograms.

Histograms store bidimentional data (x,y) in tables ordered uniquely by x, and are accumulated in the y. For example if (x1, y1) and (x1, y2) are logged (using the corresponding log operation) in the histogram, the stored value is (x1, y1 + y2). This data collector also calculates the mean value and the standard deviation of the collected data.

There are three kinds of histograms in EOSimulator, all of them subclases of eosim::statics::Histogram which defines the behavior of every histogram in EOSimulator:

• eosim::statics::Observation: This histogram store observations; the number of times that the value x has been measured in a variable,
• eosim::statics::TimeSeries: This histogram records the evolution of a variable over time; a serie of values over time,
• eosim::statics::TimeWeighted; This histogram records the how much time has a variable sustained a given value.

Besides of store data, histograms can be displayed in diferent formats:

• table: a table of values separeted by tabs using eosim::statics::Histogram::table;
• graphical: an horizontal asterix-bar graph with the values eosim::statics::Histogram::print.

Both formats could be written in the standard output or in a file.

Classes
class	eosim::statics::Histogram
	Abstract Histogram. More...
class	eosim::statics::Observation
	Observation Histogram. More...
class	eosim::statics::TimeSeries
	Time Series Histogram. More...
class	eosim::statics::TimeWeighted
	Time Weighted Histogram. More...

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