使用fopen增加Windows中Matlab中打开文件描述符的最大数量

例如,如果要将100 000行附加到3000个文件(即使不需要对文件中已有的内容进行任何表示),您可以这样做：

%% Main processing
function [] FullProcess()
%[        
    for block = 1:100,% Partial processing 
        lines = processBlock(block);

        % Save step   
        pushToFiles(block,lines);     

    end        
%]

附：

% Partial processing in memory
function [lines] = processBlock(block)
%[
    % Preallocate
    lines = cells(1000,3000);

    % Do the processing for current block
    ...
    lines{500,12} = 'kikou';
    ...
%]

和：

%% Save partial work
function [] = pushToFiles(block,lines)
%[
    fcount = size(lines,2);
    lcount = size(lines,1);
    for fi = 1:fcount,[fid,msg] = fopen(fprintf('f%i',fi),'a'); % Open in append mode
       if (fid < 0),error(msg); end

       for li = 1:lcount,fprintf(fid,lines{li,fi});
       end

       fclose(fid);

    end
%]

这减少了100 fopen / fclose的事情(尽管有3000个文件,但这远远低于之前的预期)