How to extract data from cell array

Hellow,

I´m a aerospace Engineer,

I´ve this 4x1 cell array read from a text file by "fgetl" function. This code contains information about two nodes (B10 and D22) of a thermal FEM:

%%%%%%

B10 = 'cryos', T = T_caja_top,

A = 0.916088, ALP = 1.000000, EPS = 0.850000,

FX = -0.270000, FY = 0.000000, FZ = 0.000000;

D22 = 'Heater wire 1', T = T_INI, QI = PJoule;

%%%%%%

So, I would like to extrat all the information and create a tipe "structure" variable called "Nodes". Example:

Node B10, Atributes: Name:'cryos', Temperature = T_caja_top, Area = 0,916088...

Node D22, Atributes: Name: 'Heater wire 1', Temperature = T_INI....

Any help is really welcome.

Regard, the delimiter between nodes is: ';'

Thank you so much,

Pelayo Vázquez Rodríguez

[Sindar]

check out cell2struct: https://www.mathworks.com/help/matlab/ref/cell2struct.html

[Pelayo Vázquez Rodríguez]

No. I’ve already checked it.

It is not so easy. Data name and values are mixed at the same cell

Answer 1

[Stephen23]

Because you did not upload a sample file I created one (attached) based on your example data.

str = fileread('trial.txt'); % read the entire file as one string
spl = regexp(str,'\w+[^;]+','match'); % split nodes
tkn = regexp(spl,'(\w+)\s*=\s*([^,]+)','tokens'); % identify key=value pairs
num = numel(tkn);
out = struct();
for k = 1:num
    tmp = tkn{k};
    tmp = strrep(vertcat(tmp{:}).','''','');
    vec = str2double(tmp(2,:));      % optional: convert to numeric
    idx = ~isnan(vec);               % optional: convert to numeric
    tmp(2,idx) = num2cell(vec(idx)); % optional: convert to numeric
    out.(tmp{1,1}) = struct('Name',tmp{2,1},tmp{:,2:end});
end

Giving a scalar structure containing nested scalar structures with different fields:

>> out
out = 
    B10: [1x1 struct]
    D22: [1x1 struct]
>> out.B10
ans = 
    Name: 'cryos'
       T: 'T_caja_top'
       A: 0.91609
     ALP: 1
     EPS: 0.85
      FX: -0.27
      FY: 0
      FZ: 0
>> out.D22
ans = 
    Name: 'Heater wire 1'
       T: 'T_INI'
      QI: 'PJoule'

[Pelayo Vázquez Rodríguez]

Thank you so much Stephen. Perfect

[Pelayo Vázquez Rodríguez]

¿How could I join a 3x1 cell into a single string?

Thank you Stephen

[Stephen23]

Try these, where C is your cell array:

[C{:}]
sprintf(' %s',C{:})
join(C)