Export Labeled Signal Sets and Features
At the end of a feature extraction session, you can export labeled signal sets with all
the extracted features or any signal features that you extracted. You can export labeled
signal sets to MAT files or to the MATLAB® workspace. You can also export signal features to the MATLAB workspace or to Classification Learner (Statistics and Machine Learning Toolbox). Signal Feature
Extractor exports labeled signals as labeledSignalSet
objects.
Export Labeled Signal Sets
To export new labeled signal sets, click Export on the
Extract Features tab and select To
Workspace
or To File
under
Labeled Signal Set
. In the dialog box, specify the name
of a variable or MAT file and an optional brief description. The variable or file
contains a labeledSignalSet
object that merges all the signals, feature tables, and
response labels that you created, imported, and modified in the current Signal
Feature Extractor session. All signals that contain time information are
converted to MATLAB timetables.
Note
When exporting labeled signal sets, Signal Feature Extractor
converts all signals with time information to timetables. This conversion
results in a deeper hierarchy of nested channels in the exported
labeledSignalSet
object. You can see the deeper hierarchy
if you import the labeled signal set again into the app.
Export Features
As you generate features in the current Signal Feature Extractor session,
you can export these features to the MATLAB Workspace or to the Classification Learner (Statistics and Machine Learning Toolbox) app. You can use the
createFeatureData
function to create a table of features that you can
then import to Classification Learner.
Export to MATLAB Workspace
To export features to the MATLAB Workspace, click Export on the
Extract Features tab and select To
Workspace
under Features
. In the
Export Features to Workspace dialog box, select the
response labels and feature labels you want to export and then click
Export.
Tip
Use Ctrl+click to select multiple features.
Before the app exports the selected features, you must specify a name and format for the output. You can output the features as either a table or matrix, where each column corresponds to a feature label and each row corresponds to a member.
Export to Classification Learner App
To export features to the Classification Learner (Statistics and Machine Learning Toolbox) app, click
Export on the Extract Features tab
and select To Classification Learner
under
Features
. In the Export Features to
Classification Learner dialog box, select the response labels and
feature labels you want to export and then click Export. Once
you export the selected features, the Classification Learner app opens
automatically with the feature table visible in the new session dialog box. In this
workflow, Classification Learner considers the features as
predictors.
See Also
Apps
- Signal Feature Extractor | Classification Learner (Statistics and Machine Learning Toolbox) | Signal Labeler