trying to select multiple files to use in multiple s-parameter plots. I can see the file name when I manually use file1{1,2} but sparameters doesn't like it.

  DefPath = 'C:\tmp\new anenna stuff\*.s4p'
    [FileName, PathName] = uigetfile(DefPath,'MultiSelect','on')
    file1 = [PathName,FileName]
    obj1=sparameters(file1{1,1})
    rfplot(obj1,1,2)
    obj2=sparameters(file1{1,2})
    rfplot(obj2,1,2)

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output:

Error using rf.internal.netparams.AllParameters

Undefined function 'sparameters' for input arguments of type 'cell'.

Error in rf.internal.netparams.ScatteringParameters

Error in sparameters (line 80)

obj = [e-mail](varargin{:});

Error in Plot_SParameter_s4p_File (line 8)

obj1=sparameters(file1);

Answer 1

[Walter Roberson]

    DefPath = 'C:\tmp\new anenna stuff\*.s4p';
    
    [FileNames, PathName] = uigetfile(DefPath,'MultiSelect','on');
    if isnumeric(FileNames); return; end   %user cancel
    %if user selected exactly one file you got a character vector,
    %otherwise a cell of character vectors. We want consistency
    FileNames = cellstr(FileNames);
    
    full_filenames = fullfile(PathName, FileNames);
    
    objs = cellfun(@sparameters, full_filenames, 'uniform', 0);
    
    hold on
    h = cellfun(@(OBJ) rfplot(OBJ, 1, 2), objs, 'uniform', 0);
    hold off
    
    xlim auto; ylim auto
    
    [~, basenames, ~] = fileparts(full_filenames);
    legend(h, basenames);

[Douglas Kenny]

thanks ... this points me in the right direction ... the legend adds a nice touch as well.