Out of memory issue

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Arun Badigannavar 2014-6-12

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https://ww2.mathworks.cn/matlabcentral/answers/133915-out-of-memory-issue

编辑： C.J. Harris 2014-6-13

I am getting error,while Loading abc.csv file of 16567kb size,as Out of memory, I have Intel core2duo,3 ghz,3GB RAM,,please help me,, I want to convert .csv file to .mat file by loading it in workspace

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Arun Badigannavar 2014-6-13

Windows7,2010a ReleaseMATLAB,other programs running,csvread,xlsread,,nothing is working

Arun Badigannavar 2014-6-13

??? Error: Not enough storage is available to complete this operation.

Error in ==> xlsread at 316 rawData = DataRange.Value

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回答（1 个）

C.J. Harris 2014-6-13

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https://ww2.mathworks.cn/matlabcentral/answers/133915-out-of-memory-issue#answer_140765

编辑：C.J. Harris 2014-6-13

在 MATLAB Online 中打开

For large CSV files you are less likely to run into memory issues if you read it line by line, for example:

nFile = 'file.csv';
[fid, message] = fopen(nFile,'r');
i=1;
numlines = str2double(perl('Countlines.pl', nFile));
while 1
      tline = fgetl(fid);
      if ~ischar(tline), break, end
        comma = findstr(tline,',');
        if i == 1
            numComma =  length(comma);
            body_data = cell(numlines, numComma+1); % pre-allocate
        end
        body_data{i,1} = tline(1:comma(1)-1);
        body_data{i,numComma+1} = tline(comma(end)+1:end);
        for nData = 1:numComma-1
            body_data{i,nData+1} = tline(comma(nData)+1:comma(nData+1)-1);
        end
        i = i + 1;
  end
  fclose(fid);