User`s guide

Exporting Signals
3-73
to downsample a signal before exporting to the workspace, consider using the
Downsample or FIR Decimation blocks. See “Converting Sample Rates and
Frame Rates” on page 3-20 for more information about rate conversion.
The
Save format parameter allows you to save the output in a variety of
formats. The default is
Array, which is also generally the most accessible
output format. Although this format does not save a record of the sample times
corresponding to the output samples, you can create such a record for a given
model by selecting the
Time option in the Workspace I/O panel of the
Simulation Parameters dialog box. See “Performance-Related Settings” on
page 2-13 for more information.
The following sections explain how the To Workspace block generates its
output:
•“Exporting a Sample-Based Signal Using the To Workspace Block” on
page 3-73
•“Exporting a Frame-Based Signal Using the To Workspace Block” on
page 3-76
The following two sections may also be of interest:
•“Creating Signals Using the Signal From Workspace Block” on page 3-38
•“Constructing Multichannel Sample-Based Signals” on page 3-42
Exporting a Sample-Based Signal Using the To Workspace Block
Recall that a sample-based signal with M∗N channels is represented by a
sequence of M-by-N matrices. (The special case of M = N = 1 represents a
single-channel signal.) When the input to the To Workspace block is a
sample-based signal (and the
Save format parameter is set to Array), the
block creates an M-by-N-by-P array in the MATLAB workspace containing the
P most recent samples from each channel. The number of pages, P, is specified
by the
Limit data points to last parameter. The newest samples are added at
the back of the array.
The figure below illustrates this for a 6-by-4 sample-based signal exported to
workspace array
A.