根据 Matlab 中的文件名加载.csv 文件

Question

I have a large number of csv files which are named sequentially based on date in the same folder. example name (d_log_yyyymmddhhmmss). All files have the same number of columns and headers and ultimately I am concatanating.

I am loading them using the following which seems to be fast and efficient:. However, this works for limited files and as I have large amounts I want to split them in cells based on the date they include in their name. For example within a month it would create 30 cell arrays with individual files and 30 concatanated files. Any help appreciated.

d = uigetdir();
 filePattern = fullfile (d, '*.csv');
 file = dir (filePattern);
Data =cell (1, numel(file));
 for k=1 : numel(file)
     filename = file(k).name;
     fullfilename = fullfile (d, filename);
     Tables {k} = readtable (fullfilename);
     fprintf ('read file %s\n', fullfilename);
     
 end

bigdata = vertcat (Data{:});

EDIT

    d = uigetdir();
 filePattern = fullfile (d, '*.csv');
 files = dir (filePattern);
 unique_months_list = {};
for i = 1:numel(files)
    file_month = files(i).name(07:12); % yyyymm part
    basefilename = files(i).name;
    fullfilename = fullfile (d, basefilename);
    if ismember(file_month, unique_months_list);
        TablesSep {i} = readtable (fullfilename);
        fprintf ('read file %s\n', fullfilename);
    else unique_months_list {end+1} =file_month;
        fprintf ('read file %s\n', fullfilename);
        TablesOct {i} = readtable (fullfilename);
  %  elseif
       % unique_months_list {end+2} =file_month;
       % disp('new'); % do your thing if another month
        %TablesNov {i} = readtable (fullfilename);
    end
end

Answer 1

Edited according to your comment:

files = dir('d_log_*');
unique_months_list = {};

for i = 1:numel(files)
    file_month = files(i).name(7:12); % yyyymm part
    
    if ismember(file_month, unique_months_list)
        disp('same'); % do your thing if same month
    else
        unique_months_list {end+1} = file_month;
        disp('new'); % do your thing if another month
    end
end