How to skip the first line from text file?

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sivalogan satchithanandamoorthy 2017-7-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/347753-how-to-skip-the-first-line-from-text-file

评论： sivalogan satchithanandamoorthy 2017-7-10

I have this multi-import file, which ask user to importchose text and csv file. My text file columns information on the first row and I want to skip the first line. Any help would be much appreciated.

Sincerely

siva

clear
  clc
  [fileName,filePath] = uigetfile({'*.csv';'*.txt'},'Pick a file','MultiSelect','on'); %filePath is were the folder address is stored
  if isnumeric(fileName);                             %fileName is were the file address stored
      disp('Please pick multiple file');
      return; 
  end
  pathToFile = fullfile(filePath,fileName);           % getting file name and folder name
  x= size(pathToFile,2);                              % size of the pathToFile
disp('Stress and strain column in csv format are as follows: 8 & 7');
disp('Stress and strain column in txt format are as follows: 4 & 5');
prompt ='Please choose the Stress column from csv format';
stress_column_csv =input(prompt);
prompt ='Please choose the strain column from csv format';
strain_column_csv=input(prompt);
prompt ='Please choose the Stress column from txt format';
stress_column_txt=input(prompt);
prompt ='Please choose the strain column from txt format';
strain_column_txt=input(prompt);
for i=1:x
[pathstr, name, ext{i}] = fileparts(pathToFile{i});         %had to add this line to get the file extension
store = importdata(pathToFile{i});
if ext{i} == '.csv'
[val,idx] = max(store.data(:,strain_column_csv));          % finding the max value
c ={idx};                                                  % idx contain cell value. 
stress{i}=store.data(1:c{1},stress_column_csv);
strain{i} =store.data(1:c{1},strain_column_csv);
else if ext{i}=='.txt'
% [val,idx] = max(store(:,stress_column_txt));
% c ={idx};
stress{i}=store(:,stress_column_txt);
strain{i} =store(:,strain_column_txt);
    end
    end
end
title_name=input('Title? ','s')
cc=jet(x);  
for i=1:x
    figure(1)
    plot(strain{i},stress{i});
    hold on
    legendInfo{i}=[fileName{i}];
end
legend(legendInfo)
xlabel('strain [%]');
ylabel('Stress [MPa]');
grid on;
title(title_name);

8 个评论
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Walter Roberson 2017-7-10

How are you reading in the text files? How are you reading in the csv files?

sivalogan satchithanandamoorthy 2017-7-10

did not see your question until now. I do not get notification, if someone ask a question. I only get if for answer. Any way you would have found it by now, answer for the question above since you have answered my question.

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采纳的回答

Walter Roberson 2017-7-10

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/347753-how-to-skip-the-first-line-from-text-file#answer_273516

在 MATLAB Online 中打开

[pathstr, name, ext{i}] = fileparts(pathToFile{i});         %had to add this line to get the file extension
if strcmp(ext{i}, 'txt')
   store = importdata(pathToFile{i}, ',', 1);              %I am guessing about the delimiter
else
   store = importdata(pathToFile{i});
end