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次のようなファイルを読み取ろうとしています。

Data Sampling Rate: 256 Hz
*************************

Channels in EDF Files:
**********************
Channel 1: FP1-F7
Channel 2: F7-T7
Channel 3: T7-P7
Channel 4: P7-O1

File Name: chb01_02.edf

File Start Time: 12:42:57

File End Time: 13:42:57 

Number of Seizures in File: 0

File Name: chb01_03.edf

File Start Time: 13:43:04

File End Time: 14:43:04

Number of Seizures in File: 1

Seizure Start Time: 2996 seconds

Seizure End Time: 3036 seconds

これまでのところ、私はこのコードを持っています:

fid1= fopen('chb01-summary.txt')
data=struct('id',{},'stime',{},'etime',{},'seizenum',{},'sseize',{},'eseize',{});
if fid1 ==-1
    error('File cannot be opened ')
end
tline= fgetl(fid1);
while ischar(tline)
    i=1;
    disp(tline);
end

regexp式を見つけるために使用したいので、次のようにしました。

line1 = '(.*\d{2} (\.edf)' 
data{1} = regexp(tline, line1);
tline=fgetl(fid1);
time = '^Time: .*\d{2]}: \d{2} :\d{2}' ;
data{2}= regexp(tline,time);
tline=getl(fid1);
seizure = '^File: .*\d';
data{4}= regexp(tline,seizure);
if data{4}>0
    stime = '^Time: .*\d{5}'; 
    tline=getl(fid1);
    data{5}= regexp(tline,seizure);
    tline= getl(fid1);
    data{6}= regexp(tline,seizure);
end

ループを使用して、ファイル名が次で始まる行を見つけようとしました。

for (firstline<1) || (firstline>1 )
    firstline= strfind(tline, 'File Name') 
    tline=fgetl(fid1);
end

そして今、私は困惑しています。

情報がある行にいるとします。どのように情報を保存しregexpますか? dataコードを一度実行した後、空の配列を取得しました...

前もって感謝します。

4

1 に答える 1

4

I find it the easiest to read the lines into a cell array first using textscan:

%// Read lines as strings
fid = fopen('input.txt', 'r');
C = textscan(fid, '%s', 'Delimiter', '\n');
fclose(fid);

and then apply regexp on it to do the rest of the manipulations:

%// Parse field names and values
C = regexp(C{:}, '^\s*([^:]+)\s*:\s*(.+)\s*', 'tokens');
C = [C{:}];                          %// Flatten the cell array
C = reshape([C{:}], 2, []);          %// Reshape into name-value pairs

Now you have a cell array C of field names and their corresponding (string) values, and all you have to do is plug it into struct in the correct syntax (using a comma-separated list in this case). Note that the field names have spaces in them, so this needs to be taken care of before they can be used (e.g replace them with underscores):

C(1, :) = strrep(C(1, :), ' ', '_'); %// Replace spaces with underscores
data = struct(C{:});

Here's what I get for your input file:

data =

            Data_Sampling_Rate: '256 Hz'
                     Channel_1: 'FP1-F7'
                     Channel_2: 'F7-T7'
                     Channel_3: 'T7-P7'
                     Channel_4: 'P7-O1'
                     File_Name: 'chb01_03.edf'
               File_Start_Time: '13:43:04'
                 File_End_Time: '14:43:04'
    Number_of_Seizures_in_File: '1'
            Seizure_Start_Time: '2996 seconds'
              Seizure_End_Time: '3036 seconds'

Of course, it is possible to prettify it even more by converting all relevant numbers to numerical values, grouping the 'channel' fields together and such, but I'll leave this to you. Good luck!

于 2013-07-23T19:18:03.070 に答える