reset

Reset datastore to initial state

Syntax

reset(ds)

Description

reset(ds) resets the datastore specified by ds to the state where no data has been read from it. Resetting allows re-reading from the same datastore.

Examples

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Reset Datastore to Initial State

Open Live Script

Create a datastore from the sample file, mapredout.mat, which is the output file of the mapreduce function.

ds = datastore('mapredout.mat');

Read the first key-value pair.

T = read(ds);

Reset the datastore to the state where no data has been read from it.

reset(ds)

Input Arguments

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`ds` — Input datastore
datastore

Input datastore. You can use these datastores as input to the reset method.

MATLAB^® datastores — Datastores created using MATLAB datastore functions. For example, create a datastore for a collection of images using ImageDatastore. For a complete list of datastores, see Select Datastore for File Format or Application.
Combined or transformed datastores — Datastores created using the combine and transform functions.
Custom datastores — Datastores created using the custom datastore framework. See Develop Custom Datastore.

Extended Capabilities

Thread-Based Environment
Run code in the background using MATLAB® `backgroundPool` or accelerate code with Parallel Computing Toolbox™ `ThreadPool`.

Usage notes and limitations:

In a thread-based environment, you can use reset only with the following datastores:
- ImageDatastore objects
- CombinedDatastore, SequentialDatastore, or TransformedDatastore objects you create from ImageDatastore objects by using combine or transform
You can use reset with other datastores if you have Parallel Computing Toolbox™. To do so, run the function using a process-backed parallel pool instead of using backgroundPool or ThreadPool (use either ProcessPool or ClusterPool).