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# can change the name of txt. file not manually

Asked by huda nawaf

### huda nawaf (view profile)

on 6 Apr 2013

hi,

I have to run the following code sevral times, each time I have to change the name of files , I have to read 2 files and write one file. If I change the name of files manually , it takes long time . Are there a way by which can change the name not manually . i.e can do that x=2; in this case I change just x each running

```f1=dlmread('d:\matlab\r2011a\bin\new_movielens1\netflix\sequences\part1_x.txt');
```
```[p o]=size(f1);k=1;
for i=1:length(f4)
seq1(i,:)=f1(f4(i),:);
seq2(i,:)=f2(f4(i),:);
seq3(i,:)=f3(f4(i),:);
end
dlmwrite('d:\matlab\r2011a\bin\new_movielens1\netflix\sequences\com_eval_x.txt',seq3);
```

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Answer by Ahmed A. Selman

### Ahmed A. Selman (view profile)

on 6 Apr 2013

If your filenames are part1_1.txt, part1_2.txt, part1_3.txt.. etc.,

and intersect_1.txt, intersect_2.txt.. etc.,

and want to write in files as com_eval_1.txt, com_eval_2.txt..etc., respectively,

use the following method:

```name1='d:\matlab\r2011a\bin\new_movielens1\netflix\sequences\part1_';
name2='d:\matlab\r2011a\bin\new_movielens1\netflix\sequences\intersect_';
nameout='d:\matlab\r2011a\bin\new_movielens1\netflix\sequences\com_eval_';
ext='.txt';
```
```   n=... ;% number of files
for x=1:n
F1_name=[name1,num2str(x),ext];
F4_name=[name2,num2str(x),ext];
OutName=[nameout,num2str(x),ext];
[p o]=size(f1);k=1;
for i=1:length(f4)
seq1(i,:)=f1(f4(i),:);
seq2(i,:)=f2(f4(i),:);
seq3(i,:)=f3(f4(i),:);
end
dlmwrite(OutName,seq3);
end ```

## 1 Comment

huda nawaf

### huda nawaf (view profile)

on 6 Apr 2013

Many thanks , I will try that