Re^3: About GD Image Data Output Methods

Try this version:

my $gd = $image->gd;
my( undef, $width, $height, undef, undef ) = unpack 'nnnCV', substr( $
+gd, 0, 11, '' );
my $len = length( $gd ) / 4 * 3;
my $bmp = pack 'a2 V V V l< l< l< v v V V l< l< V V',
    'BM', $len + 54, 0, 54, 40, $width, -$height, 1, 24, 0, $len, 0, 0
+, 0;

$bmp .= join'', unpack '(xaaa)*', $gd;
[download]

Looks like I had two fields transposed; even though my image viewer didn't notice (or just didn't look).

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority". I'm with torvalds on this

In the absence of evidence, opinion is indistinguishable from prejudice. Agile (and TDD) debunked

Comment on Re^3: About GD Image Data Output Methods Download Code

Replies are listed 'Best First'.
Re^4: About GD Image Data Output Methods by karlgoethebier (Abbot) on Jun 07, 2015 at 20:06 UTC
Now i get: identify: Insufficient image data in file `mandelbrot.bmp'. ŤThe Crux of the Biscuit is the Apostropheť	[reply] [d/l]
Re^5: About GD Image Data Output Methods by BrowserUk (Patriarch) on Jun 07, 2015 at 20:13 UTC
Hm. Both versions work with my image viewer. Can you make a copy of your image available to me in .gd & the converted format? Or attach them to an email to me? Are you using truecolor images? With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". I'm with torvalds on this In the absence of evidence, opinion is indistinguishable from prejudice. Agile (and TDD) debunked	[reply]
Re^6: About GD Image Data Output Methods by karlgoethebier (Abbot) on Jun 07, 2015 at 21:01 UTC
Do'h! Know it works. `GD::Image->trueColor(1);` did it. And `convert mandelbrot.bmp mandelbrot.png` works too. Thank you very much for advice and best regards, Karl P.S.: If you can effort the time it would be very nice to get some explanations about how your code works. I guess that only a few understand it just by inspection. Unfortunately i'm not one of the chosen. But i'm working on it ;-) ŤThe Crux of the Biscuit is the Apostropheť	[reply] [d/l] [select]
Re^7: About GD Image Data Output Methods by BrowserUk (Patriarch) on Jun 07, 2015 at 21:27 UTC
Re^8: About GD Image Data Output Methods by karlgoethebier (Abbot) on Jun 08, 2015 at 09:36 UTC