mscohere function with two cell arrays

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Felicia DE CAPUA 2023-1-12

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回答： Aditya Jha 2023-1-16

Hi everyone,

I'm using mscohere functiom with two cell arrays 64x1. When I obtain the output, I obtain a cell array 64x1. After, I converted the cell array in matrix array with cell2mat ed obtain a matrix 33554496x64. What is the problem?

Thank to everyone

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Jiri Hajek 2023-1-13

Hi, this would be pure guesswork, without a data sample.

Bjorn Gustavsson 2023-1-13

编辑：Bjorn Gustavsson 2023-1-13

在 MATLAB Online 中打开

mscohere does not accept cell-arrays as input:

xCell1 = {randn(64,1)};
xCell2 = {randn(64,1)};
whos xCell1 xCell2
  Name        Size            Bytes  Class    Attributes
  xCell1      1x1               616  cell               
  xCell2      1x1               616  cell               
mscohere(xCell1,xCell2) 
Error using pwelch
Expected x to be one of these types:
single, double
Instead its type was cell.
Error in welchparse>parse_inputs (line 80)
        validateattributes(y1,{'single','double'}, {'finite','nonnan'},'pwelch','x')
Error in welchparse (line 31)
    parse_inputs(x1,esttype,varargin{:});
Error in welch (line 43)
    welchparse(x,esttype,varargin{:});
Error in mscohere (line 161)
[varargout{1:nargout}] = welch({x,y},esttype,inputArgs{:}); 
80          validateattributes(y1,{'single','double'}, {'finite','nonnan'},'pwelch','x')

So clearly you call mscohere with data in some other format.

If you are new to matlab I might be so bold as to suggest that you walk through the on-ramp material/course/presentations. It is designed to get people up and running as fast and efficiently as possible.

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Answer 1

Aditya Jha 2023-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/1892885-mscohere-function-with-two-cell-arrays#answer_1149500

Hi!

‘mscohere’ does not accept cell-arrays as input.

For more details about valid data types to mscohere, please refer to the following documentation: https://www.mathworks.com/help/signal/ref/mscohere.html

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mscohere function with two cell arrays

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