Re: [OctDev] image/padarray.m

[Teemu I. <tpi...@pc...>]

On 08/08/04 20:50, Josep Mon=E9s i Teixidor wrote:
> Let's introduce padarray...

Hi Josep,

padarray.m seems to replicate and extend the functionality in impad.m, wh=
ich
is already in octave-forge. Since padarray is more Matlab compatible, we
should probably start using it instead.

"rgrep -l impad *" gives:

image/fftconv2.m
image/impad.m
image/imrotate.m
image/imshear.m
image/imtranslate.m
image/medfilt2.m
image/ordfilt2.m

Would you be interested in changing the function calls to impad in these
functions to padarray, so that impad can be deprecated?

Teemu



>=20
>  -- Function File: B =3D  padarray (A,PADSIZE)
>  -- Function File: B =3D  padarray (A,PADSIZE,PADVAL)
>  -- Function File: B =3D  padarray (A,PADSIZE,PADVAL,DIRECTION)
>      Pads an array in a configurable way.
>=20
>      B =3D padarray(A,padsize) pads an array A with zeros, where PADSIZ=
E
>      defines the amount of padding to add in each dimension (it must be
>      a vector of positive integers).
>=20
>      Each component of PADSIZE defines the number of elements of
>      padding that will be added in the corresponding dimension. For
>      instance, [4,5] adds 4 elements of padding in first dimension
>      (vertical) and 5 in second dimension (horizontal).
>=20
>      B =3D padarray(A,padsize,padval) pads A using the value specified =
by
>      PADVAL. PADVAL can be a scalar or a string. Possible values are:
>     `0'
>           Pads with 0 as described above. This is the default behaviour.
>=20
>     `scalar'
>           Pads using PADVAL as a padding value.
>=20
>     `'circular''
>           Pads with a circular repetition of elements in A (similar to
>           tiling A).
>=20
>     `'replicate''
>           Pads 'replicating' values of A which are at the border of the
>           array.
>=20
>     `'symmetric''
>           Pads with a mirror reflection of A.
>=20
>      B =3D padarray(A,padsize,padval,direction) pads A defining the
>      direction of the pad. Possible values are:
>     `'both''
>           For each dimension it pads before the first element the numbe=
r
>           of elements defined by PADSIZE and the same number again afte=
r
>           the last element. This is the default value.
>=20
>     `'pre''
>           For each dimension it pads before the first element the
>           number of elements defined by PADSIZE.
>=20
>     `'post''
>           For each dimension it pads after the last element the number
>           of elements defined by PADSIZE.
>=20
>=20
> --=20
> Josep Mon=E9s i Teixidor
> Clau GnuPG: gpg --recv-keys 80E85CC4