Create a text file by matlab

Question

I want to create a text file like this with Matlab but i don't know how should I do that.

range(0,25e-9,0+600e-9),range(0+600e-9,1e-4,1.000000e-03),range(1.000000e-03,25e-9,1.000000e-03+600e-9),range(1.000000e-03+600e-9,1e-4,2.000000e-03),range(2.000000e-03,25e-9,2.000000e-03+600e-9),range(2.000000e-03+600e-9,1e-4,3.000000e-03)

for example here I want to create 6 point and I can do it by myself. But if I want create 100 point or 500 point I have to use Matlab. I wrote a code and create a matrix something like this but what I want is different. It's my code but I cant use it.....

clc
clear
close all

stp1=25e-9;
stp2=1e-4;
A=600e-9;
B=1e-3;

i=3;
F=zeros(i,3);

for i=1:i
    if i==1
        F(i,1)=0;
        F(i,2)=stp1;
        F(i,3)=A;
    else 
        if mod(i,2)==0
         F(i,1)=F(i-1,3);
         F(i,2)=stp2;
         F(i,3)=(i/2)*B;
        else
            F(i,1)=F(i-1,3);
            F(i,2)=stp1;
            F(i,3)=F(i,1)+A;
        end
    end
end

for example this is my matrix:

`     0.0000e+000    25.0000e-009   600.0000e-009
   600.0000e-009   100.0000e-006     1.0000e-003
     1.0000e-003    25.0000e-009     1.0006e-003`

I want to put them in one line and this like this:

`range(0.0000e+000,25.0000e-009,600.0000e-009),range(600.0000e-009,100.0000e-006,1.0000e-003),range(1.0000e-003,25.0000e-009,1.0006e-003)`

you know I want to add range(A(1,1),A(1,2),A(1,3)),range(A(2,1),A(2,2),A(2,3)) to my text file.... I hope I have explained well that I want.

Have you looked into fprintf and dlmwrite? What have you tried to write to a text file? — SecretAgentMan
– SecretAgentMan, Commented Nov 27, 2018 at 5:03
hmmm ... is your question about creating a text file ... or about creating the matrices with the desired numbers (and then put them in a text file) ?? — Hoki
– Hoki, Commented Nov 27, 2018 at 12:04
@SecretAgentMan @Hoki I want to create a text file like this: range(0,25e-9,0+600e-9),range(0+600e-9,1e-4,1.000000e-03), I can create a [i,3] matrix but i don't know how to put them in a text file like range(0,25e-9,0+600e-9),range(0+600e-9,1e-4,1.000000e-03),.... I don't know how to explain.... sorry :( — ali eskandari
– ali eskandari, Commented Nov 27, 2018 at 15:23
Suppose you have your m x n matrix A. (1) As @Hoki asked, do you know how to create your matrix? (2) You're wanting to write a text file from MATLAB that has matrix A, right? Is there a reason dlmwrite or fprintf aren't good approaches? (3) What have you tried so far (to write a text file)? — SecretAgentMan
– SecretAgentMan, Commented Nov 27, 2018 at 16:56
Also, this is tagged cell-array but I didn't see any cell arrays in your code. Can you explain why this tag applies? — SecretAgentMan
– SecretAgentMan, Commented Nov 27, 2018 at 16:57

SecretAgentMan · Accepted Answer · 2018-11-27 18:29:47Z

1

I've put some code together below to help move this along. Please comment and I can adjust (or others can post answers based on updated information).

I'm still not sure exactly what outcome you're after.

For reference, you can see examples of file I/O documentation for dlmwrite here and for fprintf here. Notice you can specify the delimiter with dlmwrite and the exact format with fprintf.

A = [0.0000e+000    25.0000e-009   600.0000e-009;
 600.0000e-009   100.0000e-006     1.0000e-003;
 1.0000e-003    25.0000e-009     1.0006e-003];
dlmwrite('TestFile.txt',A)  % Example use of dlmwrite

B = range(A,2);             % Range of the rows of A
dlmwrite('TextFile2.txt',B)

C = cell(size(A,1),1);
fileID = fopen('TestFile3.txt','w+');
formatstr = '%12s\r\n';
for k = 1:size(A,1)
    C{k}=['range(A(' num2str(k) ',:)'];
    fprintf(fileID,formatstr,C{k});
end
fclose(fileID);

Hope this helps.

edited Nov 27, 2018 at 18:29

answered Nov 27, 2018 at 17:53

SecretAgentMan

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5 Comments

ali eskandari Over a year ago

Thanks for your help but the TextFile2.txt or TextFile1.txt did not include any range(.....) you know, for example this is our matrix link and I want to create a text file like this link. How can I add these strings to my text file??

SecretAgentMan Over a year ago

@alieskandari, check the 3rd example. is this what you're after? I did it in column. Changing the formatstr can put it in rows.

ali eskandari Over a year ago

imagine we have a matrix like this [1,2,3;4,5,6] and I want to create a text file like this: SecretAgentMan(1,2,3), SecretAgentMan(4,5,6) would you tell me how should I do that? @SecretAgentMan

SecretAgentMan Over a year ago

@alieskandari, the command A(k,:) returns the k-th row of A. You can modify the code if you don't want to use MATLAB's "all-columns" shortcut ( the colon, : ). The code I posted seems to give you the answer you seek when I run it. Are you wanting it in row instead of column?

ali eskandari Over a year ago

Thank you so much... I edited it and it works .... I really appreciate for your kindness. And I really sorry for bothered you and take your time.

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