Simulink.sdi.exportRun

Export Simulation Data Inspector run data to the workspace or a file

Description

example

dataset = Simulink.sdi.exportRun(runID) creates a Simulink.SimulationData.Dataset object in the base workspace with the data in the Simulation Data Inspector run identified by runID.

example

Simulink.sdi.exportRun(runID,Name,Value) exports the data in the run corresponding to runID to the base workspace or a file according to the options specified by one or more name-value pair arguments. You can export data for one or more runs to a MAT, MLDATX, or Microsoft® Excel® file. To export data for multiple runs to a file, you can specify the runIDs input as a vector of run IDs.

Examples

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This example shows how to export data from a run in the Simulation Data Inspector to a Simulink.SimulationData.Dataset object in the base workspace you can use to further process your data. The method you choose to export your run depends on the processing you do in your script. If you have a run object for the run, you can use the export method to create a Simulink.SimulationData.Dataset object with the run data in the base workspace. If you do not have a run object, use the Simulink.sdi.exportRun function to export the run to the workspace.

Export Run Using Simulink.sdi.exportRun

Use the Simulink.sdi.export function to export run data to the workspace or a file when your workflow does not include creating a run object.

To create a run of simulation data, open the vdp model, mark signals for logging, and run a simulation.

load_system('vdp')

SignalHandles = get_param('vdp', 'Lines');

Simulink.sdi.markSignalForStreaming(SignalHandles(5).Handle, 'on')
Simulink.sdi.markSignalForStreaming(SignalHandles(6).Handle, 'on')

out = sim('vdp');

Use the Simulink.sdi.getAllRunIDs function to access the most recently created run.

runIDs = Simulink.sdi.getAllRunIDs;
runID = runIDs(end);

Use the Simulink.sdi.exportRun function to export the run data to a Dataset object in the workspace.

simDataset = Simulink.sdi.exportRun(runID);

Export Run Using export Method

When your workflow involves creating a Run object, you can use the export function to create a Simulink.SimulationData.Dataset object in the base workspace for further processing of the run data. For example, you need to access Run objects for simulation runs with signal data you want to compare using the Simulink.sdi.compareSignals function.

Load a model and mark signals for logging. Then, simulate the model to create run data.

load_system('vdp')

SignalHandles = get_param('vdp', 'Lines');

Simulink.sdi.markSignalForStreaming(SignalHandles(5).Handle, 'on')
Simulink.sdi.markSignalForStreaming(SignalHandles(6).Handle, 'on')

sim('vdp');

Use the Simulink.sdi.getAllRunIDs function to access the run ID for the most recently created run. Then, use the Simulink.sdi.getRun function to access the Run object corresponding to the run.

runIDs = Simulink.sdi.getAllRunIDs;
runID = runIDs(end);
vdpRun = Simulink.sdi.getRun(runID);

Use the export function to export the run data to a Dataset object in the workspace.

simDataset = export(vdpRun);

Input Arguments

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Run identifier for the run you want to export to the workspace or a file. When you export data to a file, you can export more than one run by specifying the runID input as a vector of Simulation Data Inspector run IDs.

The Simulation Data Inspector assigns a unique run ID to each run. You can get the run ID for one or more runs using Simulink.sdi.getAllRunIDs and Simulink.sdi.getRunIDByIndex.

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Example: 'to','file'

Specify whether to export data to a variable in the base workspace or to a file.

When you export data to a file, you must also specify a file name using the 'filename' name-value pair argument. You can specify a file name with a MAT, MLDATX, or XLSX extension.

When you export a run to a MAT-file, the data is saved in a Simulink.SimulationData.Dataset object. When you export more than one run to a MAT-file using the Simulink.sdi.exportRun function, the data is saved in a Dataset object, where each element is a Dataset object containing the data for an exported run.

Data exported to a Microsoft Excel file is saved with the format described in Simulation Data Inspector Import and Export File Format.

When you export data to a Microsoft Excel file, you can specify additional options using the 'overwrite', 'metadata', and 'sharetimecolumn' name-value pairs.

Example: 'to','file'

Name of the file to contain the exported data, specified as a string or character array. Include a MAT, MLDATX, or XLSX extension in the file name to specify whether to export to a MAT-file, MLDATX-file, or a Microsoft Excel file. When you do not specify an extension with the file name, the data exports to a MAT-file.

Use the 'filename' name-value pair argument when you specify the 'to' name-value pair argument with the value 'file'.

When you export data to a Microsoft Excel file, you can specify additional options using the 'overwrite', 'metadata', and 'sharetimecolumn' name-value pair arguments.

Example: 'filename',"mySpreadsheet.xlsx"

Specify data to overwrite in existing Microsoft Excel file. When you export data to a Microsoft Excel file that already exists, you can control whether the export overwrites the entire file or only the affected sheets in the file.

  • 'file' — Overwrite the entire file with the exported data.

  • 'sheetsonly' — Only overwrite sheets of the Microsoft Excel file with data that corresponds to the exported data.

Example: 'overwrite','sheetsonly'

Metadata to include in the exported Microsoft Excel file, specified in a string array. By default, the export operation does not include any metadata. You can export this metadata to the Microsoft Excel file:

  • dataType — Signal data type

  • units — Signal units

  • blockPath — Path to the source block for logged signals

  • interp — Signal interpolation method

  • portIndex — Index of the port on the source block for logged signals

You can specify the desired metadata in any order you choose in the string array. The order of the metadata does not affect the format in the exported file, which always matches the description in Simulation Data Inspector Import and Export File Format.

Example: 'metadata',["units","dataType"]

Specify whether to share time columns in the exported Microsoft ExcelMicrosoft Excel file for signals that have identical time data. By default, signals with the same time data share a time column in the exported file. When you specify the value as 'off', each signal in the exported file has its own time column.

Example: 'sharetimecolumn','off'

Output Arguments

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Simulink.SimulationData.Dataset object containing the data from the run identified by runID.

Introduced in R2017a