ID:               19817
 User updated by:  [EMAIL PROTECTED]
 Reported By:      [EMAIL PROTECTED]
 Status:           Open
 Bug Type:         GD related
 Operating System: Darwin 6.1 (Mac 10.2.1)
 PHP Version:      4CVS-2002-10-08
 New Comment:

I have added an uncompressed version of the map at the 
site. It is called "uncompressed_med.gd2"

If you are interested in where I got these huge world 
images, I got them from a nasa site. You can download them 
if you would like :-)

To give credit where it is due:
http://visibleearth.nasa.gov/cgi-bin/viewrecord?11656


Previous Comments:
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[2002-10-10 09:39:06] [EMAIL PROTECTED]

I have added an uncompressed version of the map at the 
site. It is called "uncompressed_med.gd2"

If you are interested in where I got these huge world 
images, I got them from a nasa site. You can download them 
if you would like :-)

To give credit where it is due:
http://visibleearth.nasa.gov/cgi-bin/viewrecord?11656

------------------------------------------------------------------------

[2002-10-10 08:22:04] [EMAIL PROTECTED]

Are you using the GD2 files at my site? I have reencoded them to work.
Do you want me to make an example GD2 file that doesn't work?

------------------------------------------------------------------------

[2002-10-10 03:14:04] [EMAIL PROTECTED]

Maybe Darwin/Mac related problem, works fine under Linux.

------------------------------------------------------------------------

[2002-10-08 11:15:07] [EMAIL PROTECTED]

ImageCreateFromGD2() does not recognize a uncompressed gd2 
file. It seems to work just fine with compressed GD2 files, 
but I am having problems compressing a GD2 file of mine. 
(pngtogd2 gives a "Bus error" when I try to compress, not a 
PHP problem tho)

This script:
<?php
header( "Content-type: image/png" );
$medimg = $_SERVER['DOCUMENT_ROOT'] . "/riverdata/images/
world_map_med.gd2";

$medimg = ImageCreateFromGD2Part( $medimg, $x, $y, 800, 600 
);

$img = ImageCreateTrueColor( 800, 600 );
ImageCopy( $img, $medimg, 0, 0, 0, 0, 800, 600 );
ImageDestroy( $medimg );
ImagePNG( $img );
ImageDestroy( $img );
?>

Leaves this in the error log:
[Tue Oct  8 09:25:50 2002] [error] PHP Warning:  
imagecreatefromgd2part() [<a href='http://www.php.net/
function.imagecreatefromgd2part'>
function.imagecreatefromgd2part</a>]: '/Library/WebServer/
Documents/riverdata/images/world_map_med.gd2' is not a 
valid GD2 file in /Library/WebServer/Documents/riverdata/
scripts/test.php on line 3
[Tue Oct  8 09:25:50 2002] [error] PHP Warning:  
imagecopy(): supplied argument is not a valid Image 
resource in /Library/WebServer/Documents/riverdata/scripts/
test.php on line 4
[Tue Oct  8 09:25:50 2002] [error] PHP Warning:  
imagedestroy(): supplied argument is not a valid Image 
resource in /Library/WebServer/Documents/riverdata/scripts/
test.php on line 4

The error occours when I use this command to create the GD2 
file:
% /usr/local/bin/pngtogd2 world_map_med.png 
world_map_med.gd2 800 1

and doesn't when I use this:
% /usr/local/bin/pngtogd2 world_map_med.png 
world_map_med.gd2 800 2

Usage: pngtogd2 filename.png filename.gd2 cs fmt
    where cs is the chunk size
          fmt is 1 for raw, 2 for compressed

The files that I am using can be found here:
http://144.92.10.251/riverdata/images/

Keep in mind tho that I have no way of telling that a valid 
GD2 file is being created in the first place because I know 
of nothing else that uses (or creates) the GD2 file format 
other than the GD library itself.

------------------------------------------------------------------------


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