Thread Subject:

Reshape function

I am using reshape function like below
pixel_labels = reshape(data_idxs,6,6144);

here data_idxs is a 6144X1 vector return by the kmenas
6 are the rows of my original vector that i input to the kmeans and 6144 are the columns of the origional vector.

when i run this code it give me the fallowing error
??? Error using ==> reshape
To RESHAPE the number of elements must not change.

please help me. actually i want to print the segmented image.

On Monday, July 16, 2012 5:03:22 PM UTC+12, Muhammad Imran wrote:
> I am using reshape function like below
> pixel_labels = reshape(data_idxs,6,6144);
>
> here data_idxs is a 6144X1 vector return by the kmenas
> 6 are the rows of my original vector that i input to the kmeans and 6144 are the columns of the origional vector.
>
> when i run this code it give me the fallowing error
> ??? Error using ==> reshape
> To RESHAPE the number of elements must not change.
>
> please help me. actually i want to print the segmented image.

Try:
pixel_labels = reshape(data_idxs,6,[]);

On 7/16/2012 12:03 AM, Muhammad Imran wrote:
> I am using reshape function like below
> pixel_labels = reshape(data_idxs,6,6144);
>
> here data_idxs is a 6144X1 vector return by the kmenas


You can't do that.

If matrix is say 5 rows by 1 columns, you can't change its
shape to 6 rows by 5 columns. The new size will be larger.

reshape can't generate data on its own to make up for the missing size.

This like the law of conservation of energy in physics, which
says that total energy in an enclosed space can't change over
time. It can change form, but not in quantity.

--Nasser

"Nasser M. Abbasi" <nma@12000.org> wrote in message <ju0alo$hkq$1@speranza.aioe.org>...
> On 7/16/2012 12:03 AM, Muhammad Imran wrote:
> > I am using reshape function like below
> > pixel_labels = reshape(data_idxs,6,6144);
> >
> > here data_idxs is a 6144X1 vector return by the kmenas
>
>
> You can't do that.
>
> If matrix is say 5 rows by 1 columns, you can't change its
> shape to 6 rows by 5 columns. The new size will be larger.
>
> reshape can't generate data on its own to make up for the missing size.
>
> This like the law of conservation of energy in physics, which
> says that total energy in an enclosed space can't change over
> time. It can change form, but not in quantity.
>
> --Nasser
>
Then how can i reprint the segmented image.

TideMan <mulgor@gmail.com> wrote in message <67077df8-b25e-48b8-9674-b4e1579b30e8@googlegroups.com>...
> On Monday, July 16, 2012 5:03:22 PM UTC+12, Muhammad Imran wrote:
> > I am using reshape function like below
> > pixel_labels = reshape(data_idxs,6,6144);
> >
> > here data_idxs is a 6144X1 vector return by the kmenas
> > 6 are the rows of my original vector that i input to the kmeans and 6144 are the columns of the origional vector.
> >
> > when i run this code it give me the fallowing error
> > ??? Error using ==> reshape
> > To RESHAPE the number of elements must not change.
> >
> > please help me. actually i want to print the segmented image.
>
> Try:
> pixel_labels = reshape(data_idxs,6,[]);

Thanks i used it but now in printed image i cannot see the image itself the only lines i can see.

i don't know how to attach that image with this post..