Read specific column from dat file

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sci hub 2021-7-6

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/873153-read-specific-column-from-dat-file

评论： sci hub 2021-7-9

采纳的回答： Scott MacKenzie

在 MATLAB Online 中打开

Hi..

I am trying to read a specific colum from dat file however, the output is 1*2 cell array..

I would like the output to be [2;4;5;7;9].. I attached the file and the code as well

clearvars; 
clc;
close all; 
fid = fopen('trial_1.dat')
data = textscan(fid, '%d %d[^\n]')
fid = fclose(fid);
% I would like data=[2;4;5;7;9]

Any help please ...

Thanks,

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Stephen23 2021-7-6

编辑：Stephen23 2021-7-6

在 MATLAB Online 中打开

trial_1.dat.txt

Simpler:

T = readtable('trial_1.dat.txt')
T = 5×2 table
    sig    olx
    ___    ___

     1      2 
     2      4 
     3      5 
     4      7 
     5      9 
T.olx
ans = 5×1
     2
     4
     5
     7
     9

sci hub 2021-7-9

@Stephen Cobeldick

Thanks.. it's also working

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采纳的回答

Scott MacKenzie 2021-7-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/873153-read-specific-column-from-dat-file#answer_741128

在 MATLAB Online 中打开

No need to use textscan. Just use readmatrix:

f = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/676208/trial_1.dat.txt';
M = readmatrix(f)
M = 5×2
     1     2
     2     4
     3     5
     4     7
     5     9
M(:,2)
ans = 5×1
     2
     4
     5
     7
     9