reading csv file from 10 th line ?

Question

E 2019-7-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/473751-reading-csv-file-from-10-th-line

编辑： E 2019-7-28

i create function read file line by line but after first 10 th line another function will read

so how i can start from 10 th line?

while(i ~=9)
      i = i + 1;
    next_line = fgetl(fid);
     D=c1; 
     c1=cell2mat(textscan(next_line,'%f %f %f %f','Delimiter', ',','CollectOutput', true))
    c1=[D;c1]
   end

thanks

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Answer 1

newbie9 2019-7-27

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/473751-reading-csv-file-from-10-th-line#answer_385113

在 MATLAB Online 中打开

If you want to read only the 10th line:

mydata10only = textscan(fid001, '%f %f %f %f', 1 , 'HeaderLines', 10);
mydata10only = [mydata10only{:}]; % this unpacks the cell array
fclose(fid001)

If you want to read in everything after the 9th line:

mydata_notneeded = textscan(fid001, '%f %f %f %f', 1 , 'HeaderLines', 9);
mydata9plus = textscan(fid001, '%f %f %f %f');  
mydata9plus = [mydata9plus{:}]; % this unpacks the cell array
fclose(fid001)
clear mydata_notneeded

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E 2019-7-27

编辑：E 2019-7-27

在 MATLAB Online 中打开

thanks so much

i want to read file after 10 th line

"line by line" not all lines

i use fgetl as part from while loop

while(i ~=9)
      i = i + 1;
    next_line = fgetl(fid);
     D=c1; 
     c1=cell2mat(textscan(next_line,'%f %f %f %f','Delimiter', ',','CollectOutput', true))
    c1=[D;c1]
   end