It's also worth to mention that the produced seq is lazy, so you can
work on big images without memory issues.
On Saturday, May 29, 2010, John Cromartie wrote:
>
> This is precisely what 'for' is for in clojure.
>
> For example:
>
> (for [x (range 10) y (range 10)] [x y])
>
> ... produces a seque
On 30 May 2010 12:42, Michael Wood wrote:
> Well, what's wrong with this:
>
> for (k = 0; k < 256; ++k)
> writeBuffer(k % 16, k / 16, value[k]);
>
> :)
I was about to say the same thing. Clojure can be more concise than
most other languages, but in this case, all one needs is a simple
loop, modu
This is precisely what 'for' is for in clojure.
For example:
(for [x (range 10) y (range 10)] [x y])
... produces a sequence of the coordinates in a 10x10 grid. You can
then consume the sequence for whatever purpose. The position of each
matrix coord in the seq produced would match up with the
On 30 May 2010 12:39, WoodHacker wrote:
>
>
> On May 29, 9:44 am, James Reeves wrote:
>> On 29 May 2010 14:19, WoodHacker wrote:
>>
>> > I'm working on a simple imaging problem. I want to copy an array of
>> > pixels to an image buffer. That means that I have to deal both with
>> > an array
On May 29, 9:44 am, James Reeves wrote:
> On 29 May 2010 14:19, WoodHacker wrote:
>
> > I'm working on a simple imaging problem. I want to copy an array of
> > pixels to an image buffer. That means that I have to deal both with
> > an array and a matrix (x and y). As I go along my array,
Also have a look at Christophe's excellent "Taming multidim Arrays"...
http://clj-me.cgrand.net/2009/10/15/multidim-arrays/
-Rgds, Adrian
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Hi,
here an example using clojure sequence library.
(require 'clojure.contrib.seq-utils)
(doseq [[y vs] (indexed (partition 256 value))
[x v] (indexed vs)]
(write-buffer x y v))
Sincerely
Meikel
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On 29 May 2010 14:19, WoodHacker wrote:
> I'm working on a simple imaging problem. I want to copy an array of
> pixels to an image buffer. That means that I have to deal both with
> an array and a matrix (x and y). As I go along my array, each time x
> reaches the end of a line in the matri
I've been working with Lisp and Scheme for the past few years and have
migrated to Clojure because of the JVM. I think I get functional
programming, but one problem is giving me fits.
I'm working on a simple imaging problem. I want to copy an array of
pixels to an image buffer. That means t
