Buildings.Utilities.IO.Files

Reports package

Information

Package with models for writing data to files.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
CSVWriter	Model for writing results to a .csv file
CombiTimeTableWriter	Model for writing results to a format that is readable by the model CombiTimeTable
JSONWriter	Model for writing results to a json file
Printer	Model that prints values to a file
WeeklySchedule	Weekly schedule
Examples	Examples package
BaseClasses	Package with base classes for Buildings.Utilities.IO.Files

Buildings.Utilities.IO.Files.CSVWriter

Model for writing results to a .csv file

Information

This model samples the model inputs u and saves them to a .csv file, which can be read using e.g. Excel or Python.

Typical use and important parameters

The parameter nin defines the number of variables that are stored. In Dymola, this parameter is updated automatically when inputs are connected to the component.

The parameter fileName defines to what file name the results are saved. The file is in the current working directory, unless an absolute path is provided.

The parameter samplePeriod defines every how many seconds the inputs are saved to the file.

Options

The parameter delimiter can be used to choose a custom separator.

By default the first line of the csv file consists of the file header. The column names can be defined using parameter headerNames. The header can be removed by setting writeHeader=false

Dynamics

This model samples the outputs at an equidistant interval and hence disregards the simulation tool output interval settings.

Extends from Buildings.Utilities.IO.Files.BaseClasses.FileWriter (Partial model for writing results to a .csv file).

Parameters

Connectors

Modelica definition

Buildings.Utilities.IO.Files.CombiTimeTableWriter

Model for writing results to a format that is readable by the model CombiTimeTable

Information

This model samples the model inputs u and saves them to a .csv file, which can be read by a Modelica.Blocks.Sources.CombiTimeTable. The Modelica.Blocks.Sources.CombiTimeTable must then have tableName="csv", as illustrated in the example Buildings.Utilities.IO.Files.Examples.CSVReader.

Typical use and important parameters

The parameter nin defines the number of variables that are stored. In Dymola, this parameter is updated automatically when inputs are connected to the component.

The parameter fileName defines to what file name the results are saved. The file is in the current working directory, unless an absolute path is provided.

The parameter samplePeriod defines every how many seconds the inputs are saved to the file.

Options

By default the first line of the csv file consists of the file header. The column names can be defined using parameter headerNames or the header can be removed by setting writeHeader=false

Dynamics

This model samples the outputs at an equidistant interval and hence disregards the simulation tool output interval settings.

Extends from Buildings.Utilities.IO.Files.BaseClasses.FileWriter (Partial model for writing results to a .csv file).

Parameters

Connectors

Modelica definition

Buildings.Utilities.IO.Files.JSONWriter

Model for writing results to a json file

Information

This model samples the model inputs u and saves them to a json file.

Typical use and important parameters

The parameter nin defines the number of variables that are stored. In Dymola, this parameter is updated automatically when inputs are connected to the component.

The parameter fileName defines to what file name the results are saved. The file is in the current working directory, unless an absolute path is provided.

The parameter keyNames defines the key names that are used to store the json values corresponding to the inputs u.

Dynamics

This model samples its inputs at the time defined by the parameter outputTime and writes them to the file fileName. The model has the following options:

• If outputTime==OutputTime.Initial, results are saved at initialisation.
• If outputTime==OutputTime.Custom, results are saved when the built-in variable time achieves customTime.
• If outputTime==OutputTime.Terminal, results are saved when the simulation terminates.

Extends from Modelica.Blocks.Icons.DiscreteBlock (Graphical layout of discrete block component icon).

Parameters

Connectors

Modelica definition

Buildings.Utilities.IO.Files.Printer

Model that prints values to a file

Information

This model prints to a file or the terminal at a fixed sample interval.

The parameter configuration controls the printing as follows:

Extends from Modelica.Blocks.Interfaces.DiscreteBlock (Base class of discrete control blocks).

Parameters

Connectors

Modelica definition

Buildings.Utilities.IO.Files.WeeklySchedule

Weekly schedule

Information

This model interprets a schedule file and performs a weekly, cyclic extrapolation on the source data. An example for a schedule entry is

double tab1(3,2)
# For week-day, output 1 between 7:00 and 19:00, and 0 otherwise
mon,tue,wed,thu,fri:7:00:00  1
mon,tue,wed,thu,fri:19:00:00  0
# For week-end, output always 0
sat,sun:0:00:00 0

The first row must start with double tab1 and be followed by the number of rows (excluding comments) and number of columns, whereas the time column is considered the first column.
Lines that start with '#' are comments.
The list of week-days is separated by a comma, and ends with a colon, after which the time format for the start is listed in the format hour:minute:second. Week-day, hour, minute and second are optional fields, but if one of these fields is used, the fields coming before it in the sequence (week-day, hour, minute, second) must be used too.

By default, schedules are read from the parameter data but optionally schedules can be read from a file. The parameter columns is used to specify which columns of the table should be produced at the output y. The first column is time, hence for the above example, set columns = {2}.

See Buildings/Resources/Data/schedule.txt for an example of the supported file format.

Extends from Modelica.Blocks.Icons.DiscreteBlock (Graphical layout of discrete block component icon).

Parameters

Connectors

Modelica definition