Correctly define the dimension for a timeseries of scalars

Question

Luis Ruiz 2018-9-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/417787-correctly-define-the-dimension-for-a-timeseries-of-scalars

回答： mbvoyager 2018-9-7

采纳的回答： mbvoyager

from_file.zip

在 MATLAB Online 中打开

I want to read data from a mat file in Simulink. To create the data file and the bus I am using timeseries objects.

    dt   = 0.1;
    tend = 24;
    t    = 0:dt:24;
    tk   = size( t, 2 );
    matrix_in = repmat( eye(3), 1, 1, tk );
    scalar_in = t;
    vector_in = randn( 3, tk );
    vector_in_1 = vector_in;
    vector_in_2 = vector_in;
    vector_in_1( vector_in_1 <= 0.5 ) = 1;
    vector_in_1( vector_in_1 > 0.5 ) = 0;
    vector_in_2( vector_in_2 >= -0.5 ) = 1;
    vector_in_2( vector_in_2 < -0.5 ) = 0;
    vector_in = vector_in_1 + vector_in_2;
    matrix_ts = timeseries( matrix_in, t, 'name', 'matrix_data' );
    vector_ts = timeseries( vector_in, t, 'name', 'vector_data' );
    scalar_ts = timeseries( scalar_in, t, 'name', 'scalar_data' );
    matrix_ts = delsample( matrix_ts, 'Value', t(  t >= 10 & t <= 15  ) );
    vector_ts = delsample( vector_ts, 'Value', t(  t >= 18 & t <= 20  ) );
    scalar_ts = delsample( scalar_ts, 'Value', t(   t >= 7 & t <= 11  ) );
    data_struct = struct( 'matrix_in', matrix_ts, ...
                          'vector_in', vector_ts, ...
                          'scalar_in', scalar_ts );
    save 'my_data' 'data_struct' -v7.3;
    my_bus = Simulink.Bus.createObject( data_struct );

Then I want to read it in Simulink. So, I have a matrix a vector and a scalar, the problem I am having is that the scalar has dimension [1 1] not 1, and because of that Simulink treat it as a matrix/vector and Simulink does not allow me to do some operations. So my question is, how can I fix the dimension for the scalar to be 1 and not [1 1]. First run the code above and then the Simulink file.

2 个评论
显示无隐藏无

mbvoyager 2018-9-6

在 MATLAB Online 中打开

I have no clue about Simulink.

But what I can see is that you are actually passing three objects of the type timeseries in a structure object. One single structure object is always represented as [1x1 objectclassname] is that your issue?

Or is your issue that

size(scalar_ts.Data)

returns