You can import data stored in CSV and Microsoft® Excel® files into the Simulation Data Inspector to view and analyze. You can also export data from the Simulation Data Inspector to a Microsoft Excel file. The format required for import is the same as the format generated by exporting data from the Simulation Data Inspector. The file always contains time and signal data and can optionally include metadata associated with each signal.
In the simplest format for CSV and Microsoft
Excel files, the first row is a header listing the names of the signals, and the
first column is time. The name for the time vector must be
Subsequent rows list the signal values corresponding to each monotonically increasing time step.
The Simulation Data Inspector does not support time vectors that include
NaN values or signals that include
Inf sample values.
NaN or empty sample values render
as missing data. All built-in data types are supported, as well as
types. When your signal has an
enum data type, specify the name of the
enumeration class in the row between the signal name and first data point with the label
Enum:, for example,
Enum: myEnum. The definition for
the enumeration class must be on the MATLAB® path.
When your data includes signals with different time vectors, the file can include more
than one time vector. Every time vector name must be
time. Time vectors
specify the time steps for signals to the right, up to the next time vector. For example,
the first time column defines the time for
signal2, and the second time column defines the time steps for
Signal columns must have the same number of data points as the associated time vector.
The file can include metadata for signals to indicate the data type, units, interpolation method, block path, and port index for each signal. Metadata for each signal is listed in rows between the signal names and the signal data. Each piece of metadata is labeled, according to this table.
When an imported file does not specify signal metadata, the Simulation Data Inspector
double data type and
linear interpolation. You
can specify the interpolation method as
(for zero-order hold), or
none. If you do not specify units for the
signals in your file, after importing the file, you can assign units to the signals in the
Simulation Data Inspector. For a list of supported units, enter
showunitslist at the MATLAB command line.
You can specify any combination of metadata for each signal in your file. Leave a blank cell for signals with less specified metadata.
You can import and export complex, multidimensional, and bus signals using CSV and Microsoft Excel files. The signal name for a column of data indicates whether that data is part of a complex, multidimensional, or bus signal.
Multidimensional signals include index information in parentheses. For example, the
signal name for a column might be
signal1(2,3). When you import data from
a file that includes multidimensional signal data, elements in the data not included in the
file take zero sample values with the same data type and complexity as the other
Complex signal data is always in real-imaginary format. Signal names for columns
containing complex signal data include
(imag) to indicate the columns corresponding to the real and imaginary
data. When you import data from a file that includes imaginary signal data without
specifying values for the real component of that signal, the real component for the signal
values default to zero.
Multidimensional signals can contain complex data. The signal name includes the
indication for the index within the multidimensional signal and the real or imaginary tag.
Dots in signal names specify the hierarchy for bus signals. For example:
Bus signals with a bus data type specification can also include a metadata row
indicating the name of the
Simulink.Bus object that defines the bus, with