Thread Subject: Can't Append to vector

Hello,

i am trying to append the first value of a vector to the end, but it gives me an error =(

??? Subscripted assignment dimension mismatch.

my code is this

for i=1:size(ttriangles,1)
    ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)];
end

what is wrong with this ?

thanks

nunes

"Joe Nunes" <vazdepaivanunes@gmail.com> wrote in message <hdhdg5$o3t$1@fred.mathworks.com>...
> Hello,
>
> i am trying to append the first value of a vector to the end, but it gives me an error =(
>
> ??? Subscripted assignment dimension mismatch.
>
> my code is this
>
> for i=1:size(ttriangles,1)
> ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)];
> end
>
> what is wrong with this ?
>
> thanks
>
> nunes

Learn to debug:

for i = 1:1
ttriangles(i,:) % a 1-by-N vector
ttriangles(i,1) % a 1-by-1 scalar
[ttriangles(i,:) ttriangles(i,1)] % a 1-by-(N+1) vector
ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)] % which does not fit into a 1-by-N vector
end

Try this:
TT = [TT TT(:,1)]

Jos

"Jos " <#10584@fileexchange.com> wrote in message <hdhe66$7s0$1@fred.mathworks.com>...
> "Joe Nunes" <vazdepaivanunes@gmail.com> wrote in message <hdhdg5$o3t$1@fred.mathworks.com>...
> > Hello,
> >
> > i am trying to append the first value of a vector to the end, but it gives me an error =(
> >
> > ??? Subscripted assignment dimension mismatch.
> >
> > my code is this
> >
> > for i=1:size(ttriangles,1)
> > ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)];
> > end
> >
> > what is wrong with this ?
> >
> > thanks
> >
> > nunes
>
> Learn to debug:
>
> for i = 1:1
> ttriangles(i,:) % a 1-by-N vector
> ttriangles(i,1) % a 1-by-1 scalar
> [ttriangles(i,:) ttriangles(i,1)] % a 1-by-(N+1) vector
> ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)] % which does not fit into a 1-by-N vector
> end
>
> Try this:
> TT = [TT TT(:,1)]
>
> Jos

It worked! Thank you!

"Jos " <#10584@fileexchange.com> wrote in message <hdhe66$7s0$1@fred.mathworks.com>...
> "Joe Nunes" <vazdepaivanunes@gmail.com> wrote in message <hdhdg5$o3t$1@fred.mathworks.com>...
> > Hello,
> >
> > i am trying to append the first value of a vector to the end, but it gives me an error =(
> >
> > ??? Subscripted assignment dimension mismatch.
> >
> > my code is this
> >
> > for i=1:size(ttriangles,1)
> > ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)];
> > end
> >
> > what is wrong with this ?
> >
> > thanks
> >
> > nunes
>
> Learn to debug:
>
> for i = 1:1
> ttriangles(i,:) % a 1-by-N vector
> ttriangles(i,1) % a 1-by-1 scalar
> [ttriangles(i,:) ttriangles(i,1)] % a 1-by-(N+1) vector
> ttriangles(i,:) = [ttriangles(i,:) ttriangles(i,1)] % which does not fit into a 1-by-N vector
> end
>
> Try this:
> TT = [TT TT(:,1)]
>
> Jos

It worked! Thank you!