Convert a cell array into matrix, but with just removing the commas (Need words to stay)

Question

Damon Schmidt 2020-3-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/510179-convert-a-cell-array-into-matrix-but-with-just-removing-the-commas-need-words-to-stay

编辑： Stephen23 2020-3-12

Okay, so it turns out that I need to keep 'known' and 'free', but I can't seem to get this to work out for me. I'm still filtering through the same NF_array (which can be changed based on user input), but now I'm trying to keep the known and free in the matrix. Below is what I'm trying to do... Thanks for the help.

NF_array = [{'1, known, known, 0.0, 0.0'}, ...
    {'8, known, known, 0.0, 0.0'}, ...
    {'4, free, known, 0.0, 0.0' }, ...
    {'5, free, known, 0.0, 0.0' }];
%Code I'm trying to use
syms known free  %defining known and free in the program
NF_array = S(NF_2:NL_2);
optf = {'Delimiter',',', 'CollectOutput',true};
fmtf = '%f%s%s%f%f';
strf = sprintf('%s\n',NF_array{:});
outf = textscan(strf,fmtf,optf{:});
Nodal_Fixity = outf{1};
Nodal_Fixity = sortrows(Nodal_Fixity)
%What I'm getting... So I need columns 2:5 to populate still
Nodal_Fixity =
     1
     4
     5
     8
%(Need the code to process NF_array and convert to)%
Nodal_Fixity =
[ 1, known, known, 0, 0]
[ 4,  known, known, 0, 0]
[ 5,  free, known, 0, 0]
[ 8,  free, known, 0, 0]

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Stephen23 2020-3-11

Earlier questions:

https://www.mathworks.com/matlabcentral/answers/509614-convert-a-cell-array-into-matrix-but-with-removing-the-words-commas

https://www.mathworks.com/matlabcentral/answers/508449-convert-cell-array-into-matrix-but-with-removing-the-words-commas-etc

Damon Schmidt 2020-3-11

I just added what I've been trying. I took out the * in the %*s to stop skipping over the 'known' and 'free', but the final output still isn't populating the way I'm trying to get it.

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Answer 1

the cyclist 2020-3-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/510179-convert-a-cell-array-into-matrix-but-with-just-removing-the-commas-need-words-to-stay#answer_419712

编辑：the cyclist 2020-3-11

在 MATLAB Online 中打开

NF_array = [{'1, known, known, 0.0, 0.0'}, ...
    {'8, known, known, 0.0, 0.0'}, ...
    {'4, free, known, 0.0, 0.0' }, ...
    {'5, free, known, 0.0, 0.0' }];
Nodal_Fixity = cell(4,5);
for nr = 1:4
    Nodal_Fixity(nr,:) = strsplit(NF_array{nr},',');
end

If you also need to remove the spaces, then follow that with

Nodal_Fixity = regexprep(Nodal_Fixity,' ','');

That does not need to be inside the loop; it will operate on the entire cell array.

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Damon Schmidt 2020-3-11

I was able to tweak my loop to account for the result being a cell array. Thanks again for the help.

Stephen23 2020-3-12

编辑：Stephen23 2020-3-12

Note:

importing/storing numeric data as character/string and then converting it to numeric afterwards is going to be less efficient than importing it as numeric in the first place.
Storing numeric data as scalar arrays in a cell array is much less efficient than storing it in a simple numeric array.

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