User`s guide

1 Data Processing

the number of output channels, nu is the number of input channels, and nf is

a v ector of frequen cy values (see “idfrd Properties” on page 1-68).

Horizontal Concatenation of idfrd Objects

The following syntax creates a new idfrd object data that contains the

horizontal concatenation of

data1,data2,...,dataN:

data = [data1,data2,...,dataN]

data

contains the frequency responses from a ll of the inputs in

data1,data2,...,dataN to the same outputs. The following diagram is a

graphical representation of horizontal co ncatenation of frequency-response

data. The

(j,i,:) vector of the resulting re sponse data represents the

frequency response from the

ith input to the jth output at all frequencies.

Data 2

2-by-1-by-nf

Horizonal Concatenation

of Data 1 and Data 2

2-by-3-by-nf

Same

outputs

Combined

inputs

Data 1

2-by-2-by-nf

Note Horizontal concatenation of idfrd obje cts requires that they have

the same outputs and frequency vectors. If the output channel names are

different and their dimensions are the same, the concatenation operation uses

the names of output channels in the ﬁrst

idfrd object. Input channels must

have unique names.

Vertical Concatenation of idfrd Objects

The following syntax creates a new idfrd object data that contains the

vertical concatenation of

data1,data2,...,dataN:

data = [data1;data2;... ;data N]

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