MATLAB: Display parameters in a different window

MATLABprogramming

Suppose I have set a parameter

a=2; b=1;

I want to display these information on a different window (like a plot window). Please advise.

Best Answer

Try this:

a=2; b=1;

figure(1)
plot((1:10), rand(1,10), 'p')
grid
ps = {'a' 'b'};                                             % Define Parameter Names
pv = [2 1];                                                 % Define Parameter Values
for k = 1:numel(pv)
    cstr{k} = sprintf('%s = %.2f', ps{k}, pv(k));           % Cell Array
end
text(7, 0.7, cstr)                                          % Text Output In Plot

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The reason you're getting the error is that sprintf creates a char array -- in this case, a 1-by-4 char array made up of the 4 characters '1', '.', '2', and '3'. But your assignment is to a single element y(k).

Possible solutions are to index into the kth row of a char array, which you should keep separate from your double array y (otherwise you'll get another error), or to use cell arrays as Wouter suggests, or to just round everything as doubles and avoid strings altogether (as Wouter also suggests).

I'd recommend the last approach. You can always display things with sprintf or fprintf at the end, and this can be done without a for-loop: fprintf(1,'%0.2f\n',x)

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info  = audioinfo(FileName);
Field = fieldnames(info);
Data  = struct2cell(info);
CStr  = cell(1, numel(Field));
for k = 1:numel(Field)
  if ischar(Data{k})
    CStr{k} = sprintf('%s: %s', Field{k}, Data{k});
  elseif isnumeric(Data{k})
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set(handles.listbox1, 'String', CStr);

Use the wanted GUI element instead of handles.listbox1 and define filename accordingly.

Maybe this is enough already:

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Best Answer

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