How to export a txt file

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Pouyan Msgn 2020-5-7

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关闭： MATLAB Answer Bot 2021-8-20

J398.txt

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I have a txt file here but there is a problem in the X-axis and I have to reduce it by the value 1.4

I did it in Matlab but I failed to save it as new txt file

Here is my attempt:

clc
clear all
D398=importdata('J398.txt');
X=D398(:,1)-(1.4); Y=D398(:,2);
A=[X Y];
fileID = fopen('NewFile.txt','w');
fprintf(fileID,'%6.2f %12.8f\n',A);
 fclose(fileID);

The Y axis in the NewFile is not the same as before!

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Andreas 2020-5-7

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Hello,

generally speaking arrays in MATLAB are stored in a column major fashion. In this case matrix A is first converted columnwise into a vector and then its components are sequentially written out to file.

To get the desirable outcome, the following line of code needs to be instead used,

fprintf(fileID,'%6.2f %12.8f\n',A.');

Kind Regards,

Andreas

Pouyan Msgn 2020-5-7