Thread Subject: strcat deleting special letters

Hallo together,

I want to concatenete strings. My idea is:

source ='BeispielTabelle_250707.txt';
resultfile=strcat(source,'aidaForTestaida.txt');

--> resultfile =
BeispielTabelle_250707.txtaidaForTestaida.txt

The source comes from an imput by the user and must be
something.txt!
How can I now cut the last 4 letters in general off
(here: .txt, later also .xls, .doc ...)? source should be
only 'something' (here: 'BeispielTabelle_250707' and then
resultfile = 'BeispielTabelle_250707aidaForTestaida.txt')

Any idea?

Thanks, Corinna

Hallo again,

I forgot to say that the length of the string source must
be variable because it is a user input.

Corinna

"Corinna Schmitt" <csc@mathworks.com> schrieb im Newsbeitrag
news:f9h60r$mvk$1@fred.mathworks.com...
> Hallo together,
>
> I want to concatenete strings. My idea is:
>
> source ='BeispielTabelle_250707.txt';
> resultfile=strcat(source,'aidaForTestaida.txt');
>
> --> resultfile =
> BeispielTabelle_250707.txtaidaForTestaida.txt
>
> The source comes from an imput by the user and must be
> something.txt!
> How can I now cut the last 4 letters in general off
> (here: .txt, later also .xls, .doc ...)? source should be
> only 'something' (here: 'BeispielTabelle_250707' and then
> resultfile = 'BeispielTabelle_250707aidaForTestaida.txt')
>
> Any idea?
>
> Thanks, Corinna

Hi Corinna,
two methods: the simple one is
resultfile = [source(1:end-4) 'aidaForTestaida.txt'];

or somewhat more involved (in case it's not .txt but .html,
you may even keep the extension the same):
[sourcepath,sourcename,sourceext]=fileparts(source);
resultfile = [sourcename 'aidaForTestaida' sourceext];

Titus

Corinna Schmitt wrote:
> Hallo again,
>
> I forgot to say that the length of the string source must
> be variable because it is a user input.
>
> Corinna
>
>


first of, strings are character arrays, and thus can be indexed. if you
want to leave away the four last characters, use

str = 'something.txt';
str1 = str(1:end-4);

however, what you want, is stripping away the file extension. there are
much more appropriate ways to do this. have a look at the FILEPARTS
function. it should do exactly what you need.


michael