How to read file with complex number as well as real numbers

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Nidhi SRIVASTAVA 2017-7-4

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https://ww2.mathworks.cn/matlabcentral/answers/347259-how-to-read-file-with-complex-number-as-well-as-real-numbers

评论： Nidhi SRIVASTAVA 2017-7-4

try_file.txt

I have a huge file with first real numbers and then complex numbers(file attached). I want to read the file and store the real numbers as variable frequency , first 5 rows of complex numbers as unit_1 and remaining as unit_2. Kindly help. Thanks.

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Answer 1

per isakson 2017-7-4

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https://ww2.mathworks.cn/matlabcentral/answers/347259-how-to-read-file-with-complex-number-as-well-as-real-numbers#answer_272810

编辑：per isakson 2017-7-4

在 MATLAB Online 中打开

If "huge" is a fraction of the size of the memory:

str = fileread( 'try_file.txt' );
ixc = find( str=='(', 1, 'first' );
cac = textscan( str(1:ixc-1), '%f%f%f%f%f%f', 'CollectOutput',true );
num = cac{1};
cac = textscan( str(ixc:end), '%f%f%f%f', 'CollectOutput',true ...
                , 'Delimiter',{'(',')',','}, 'MultipleDelimsAsOne',true );
z = complex( cac{1}(:,[1,3]), cac{1}(:,[2,4]) );

and inspect the results

>> whos num z
  Name       Size            Bytes  Class     Attributes
  num       13x6               624  double              
  z         11x2               352  double    complex   
>> num(1,:)
ans =
   97.0210   97.0600   97.0990   97.1380   97.1770   97.2160
>> z(1,:)
ans =
   0.1818 + 0.0572i   0.0274 + 0.4233i
>>