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From: Adrian on 9 Jul 2010 22:15
Suppose I have a string "Take me home, cas<<ountry rosd<<ad."
I want to write a script to detect each < as a cue for backspace, making the string read as follows: "Take me home, country road."
deleting the < as well as the preceding character.
How can this be done?

From: James Tursa on 9 Jul 2010 23:00
"Adrian " <bechaotik(a)gmail.com> wrote in message <i18l3c$k9o$1(a)fred.mathworks.com>...
> Suppose I have a string "Take me home, cas<<ountry rosd<<ad."
> I want to write a script to detect each < as a cue for backspace, making the string read as follows: "Take me home, country road."
> deleting the < as well as the preceding character.
> How can this be done?

One way:

function s = bsdel(s)
m = numel(s);
g = true(1,m);
n = 0;
for k=m:-1:1
if( s(k) == '<' )
n = n + 1;
g(k) = false;
elseif( n > 0 )
g(k) = false;
n = n - 1;
end
end
s = s(g);
return
end


James Tursa
From: Maxx Chatsko on 9 Jul 2010 23:01
"Adrian " <bechaotik(a)gmail.com> wrote in message <i18l3c$k9o$1(a)fred.mathworks.com>...
> Suppose I have a string "Take me home, cas<<ountry rosd<<ad."
> I want to write a script to detect each < as a cue for backspace, making the string read as follows: "Take me home, country road."
> deleting the < as well as the preceding character.
> How can this be done?
>


http://www.mathworks.com/access/helpdesk/help/techdoc/ref/sscanf.html
Not sure, but here's a start. I'm looking into it too...
Maxx
From: Adrian on 9 Jul 2010 23:51
"James Tursa" <aclassyguy_with_a_k_not_a_c(a)hotmail.com> wrote in message <i18nnn$op7$1(a)fred.mathworks.com>...
> "Adrian " <bechaotik(a)gmail.com> wrote in message <i18l3c$k9o$1(a)fred.mathworks.com>...
> > Suppose I have a string "Take me home, cas<<ountry rosd<<ad."
> > I want to write a script to detect each < as a cue for backspace, making the string read as follows: "Take me home, country road."
> > deleting the < as well as the preceding character.
> > How can this be done?
>
> One way:
>
> function s = bsdel(s)
> m = numel(s);
> g = true(1,m);
> n = 0;
> for k=m:-1:1
> if( s(k) == '<' )
> n = n + 1;
> g(k) = false;
> elseif( n > 0 )
> g(k) = false;
> n = n - 1;
> end
> end
> s = s(g);
> return
> end
>
>
> James Tursa

Hi James, I am new to Matlab. esp to Functions.
where do i insert the to be detected string in the script?
cheers
adrian
From: James Tursa on 10 Jul 2010 01:18
"Adrian " <bechaotik(a)gmail.com> wrote in message <i18qn8$k58$1(a)fred.mathworks.com>...
> "James Tursa" <aclassyguy_with_a_k_not_a_c(a)hotmail.com> wrote in message <i18nnn$op7$1(a)fred.mathworks.com>...
> > "Adrian " <bechaotik(a)gmail.com> wrote in message <i18l3c$k9o$1(a)fred.mathworks.com>...
> > > Suppose I have a string "Take me home, cas<<ountry rosd<<ad."
> > > I want to write a script to detect each < as a cue for backspace, making the string read as follows: "Take me home, country road."
> > > deleting the < as well as the preceding character.
> > > How can this be done?
> >
> > One way:
> >
> > function s = bsdel(s)
> > m = numel(s);
> > g = true(1,m);
> > n = 0;
> > for k=m:-1:1
> > if( s(k) == '<' )
> > n = n + 1;
> > g(k) = false;
> > elseif( n > 0 )
> > g(k) = false;
> > n = n - 1;
> > end
> > end
> > s = s(g);
> > return
> > end
> >
> >
> > James Tursa
>
> Hi James, I am new to Matlab. esp to Functions.
> where do i insert the to be detected string in the script?
> cheers
> adrian

The '<' is hard-coded per your request. If you want to specify the character to detect for backspace, just pass it in. e.g.,

function s = bsdel(s,c)
m = numel(s);
g = true(1,m);
n = 0;
for k=m:-1:1
if( s(k) == c ) % c is the "backspace"
n = n + 1;
g(k) = false;
elseif( n > 0 )
g(k) = false;
n = n - 1;
end
end
s = s(g);
return
end


James Tursa
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