load'bmp' writebmp
2011/11/8 David Vaughan <[email protected]> > Is there something that creates bitmaps? So say I wanted to make a bitmap > of the Mandelbrot set (and I had a 2d array representing each pixel) is > there a verb that will make that into a bitmap? > > ___________________________ > > David Vaughan > > On 7 Nov 2011, at 19:25, Raul Miller <[email protected]> wrote: > > > Sometimes your description seems accurate. > > > > However, consider: > > viewmat i.10 > > or > > viewmat 2 > > > > -- > > Raul > > > > On Mon, Nov 7, 2011 at 1:36 PM, David Vaughan > > <[email protected]> wrote: > >> Am I right in thinking that viewmat takes a 2d array and treats it as > if each number is a pixel and its value is its colour? > >> Thanks. > >> > >> ___________________________ > >> > >> David Vaughan > >> > >> On 6 Nov 2011, at 20:12, "Linda Alvord" <[email protected]> > wrote: > >> > >>> Here's another option: > >>> > >>> S=: 13 :'''+.''{~([:+./*.)"1/~#:i.y' > >>> S > >>> '+.' {~ [: ([: +./ *.)"1/~ [: #: i. > >>> > >>> S 8 > >>> ++++++++ > >>> +.+.+.+. > >>> ++..++.. > >>> +...+... > >>> ++++.... > >>> +.+..... > >>> ++...... > >>> +....... > >>> > >>> Linda > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> -----Original Message----- > >>> From: [email protected] > >>> [mailto:[email protected]] On Behalf Of Roger Hui > >>> Sent: Saturday, November 05, 2011 2:10 PM > >>> To: Programming forum > >>> Subject: Re: [Jprogramming] Binary Addresses Method > >>> > >>> I believe the "and" in your pseudocode maps to 17 b. (bitwise and). > Thus: > >>> 0 = 17 b./~ i.256 > >>> > >>> For example, using the boolean matrix result to index into '.*', > >>> > >>> '.*' {~ 0 = 17 b./~ i.16 > >>> **************** > >>> *.*.*.*.*.*.*.*. > >>> **..**..**..**.. > >>> *...*...*...*... > >>> ****....****.... > >>> *.*.....*.*..... > >>> **......**...... > >>> *.......*....... > >>> ********........ > >>> *.*.*.*......... > >>> **..**.......... > >>> *...*........... > >>> ****............ > >>> *.*............. > >>> **.............. > >>> *............... > >>> > >>> > >>> > >>> On Sat, Nov 5, 2011 at 10:50 AM, mikel paternain > >>> <[email protected]>wrote: > >>> > >>>> > >>>> > >>>> > >>>> In the amazing book Chaos and Fractals New frontiers of Science, the > >>>> authors described a simple algorithm for making the Sierpinski Gasket. > >>> This > >>>> is perhaps the most short and efficient algorithm (in non tacit > >>> programming > >>>> languages) for computing this fractal. > >>>> The basic algorithm is(in pseudocode): > >>>> > >>>> Define x,y > >>>> For y=0 to 255 > >>>> For x=0 to 255 > >>>> If /x And y)=0 Then Pset(x,y) //Pset is a function for > drawing > >>>> the point x,y > >>>> Next x > >>>> Next y > >>>> End > >>>> > >>>> With my little experience inJ the question is how translate this code > to J > >>>> . Help me please! > >>>> Thanks in advance!! > >>>> > >>>> Mikel > >>>> ---------------------------------------------------------------------- > >>>> For information about J forums see > http://www.jsoftware.com/forums.htm > >>>> > >>> ---------------------------------------------------------------------- > >>> For information about J forums see http://www.jsoftware.com/forums.htm > >>> > >>> ---------------------------------------------------------------------- > >>> For information about J forums see http://www.jsoftware.com/forums.htm > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Björn Helgason, Verkfræðingur Fornustekkum II 781 Hornafirði, t-póst: [email protected] gsm: +3546985532 twitter: @flugfiskur http://groups.google.com/group/J-Programming Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans góður kennari getur stigið á tær án þess að glansinn fari af skónum /|_ .-----------------------------------. ,' .\ / | Með léttri lund verður | ,--' _,' | Dagurinn í dag | / / | Enn betri en gærdagurinn | ( -. | `-----------------------------------' | ) | (\_ _/) (`-. '--.) (='.'=) ♖♘♗♕♔♙ `. )----' (")_(") ☃☠ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
