This could be very helpful for handling graphics - I could read in a 6
megapixel photo
as a useful 33.5 MB array instead of 134 MB one as I do now.
[I know these numbers don't seem right but they are:
load 'images'
$im1=. read_image 'D:\amisc\pix\Photos\2007Q3\20070813\DSCF6222.JPG'
2848 2136 3
7!:5 <'im1'
134217728
(<./,>./),im1
0 255
im1=. im1{a.
7!:5 <'im1'
33554432
$im1
2848 2136 3
*/$im1
18249984
NB. Should be 18 MB but this exceeds a power of 2 boundary so gets rounded
up.
]
On 10/3/07, Raul Miller <[EMAIL PROTECTED]> wrote:
>
> On 10/3/07, Roger Hui <[EMAIL PROTECTED]> wrote:
> > I propose to extend the bitwise operations m b. for m e. 16+i.19
> > to work on character (8-bit or 16-bit) arguments.
>
> I like this idea.
>
> --
> Raul
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
--
Devon McCormick, CFA
^me^ at acm.
org is my
preferred e-mail
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
