Last modified at 03:10:12 September 11 2006
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation.
This manual is in it`s early beginning and many pages do not have content yet.
If you would like to participate in editing the manual, register or login at Canvas and follow the "PagEd Wiki Project" link. You will then see an "Edit" link on every page.
Sometimes or always, images are not shown. Why?
PagEd comes with several image display functions. Here are some pointers for troubleshooting:
1. PHP environment: In order to troubleshoot image problems, some information about your server may be necessary. PagEd can give you this information. Edit your PagEd/setmodule.php file. Almost at the bottom of the file you will find the line $showphpinfolink=0;. Change the 0 to 1 and save change. Then turn to your PagEd Module Settings panel where a phpinfo link will be visible at the bottom.
2. NetPBM: If you want PagEd to use this image handling library, download the correct pack for your server. (Server type info can be found at the top of the phpinfo display page - see 1.) Upload as folder "netpbm" into the PagEd directory. Inside this folder are no subfolders, but 12 files, ecah handling different image formats and functions. All files, AND the netpbm folder, must be CHMOD-ed to 755.
3. GD: If you haven`t installed netpbm, OR if your server is running PHP in safe mode (See server info in 1.), GD is your option. See server info again - there should be a section on GD there. If there isn`t, you must either install netpbm or have your web hoster activate GD for you.
4. Image folders: There are currently 5 image folders with PagEd and they must be CHMOD-ed to 777. If you are not familiar with CHMOD-ing, see the "How to CHMOD?" article, front page, lower left.
5. Formats: GD will only handle PNG and JPEG. For gif images, convert them to PNG before adding into PagEd content. This will change after June 19, 2004 when the LZW compression patent expires world-wide, and GD will probably support GIF soon after. However, PNG is a very superior format to GIF, and should be used wherever possible.
6. JPEG2000: This new graphics format offers lossless compression ratios of 10,000:1 or better, and has the holographic property that any piece of the image contains the entire image at a lower resolution. There are still details of fast algorithms to be ironed out, but when they are, expect this format to become dominant.
7. More tips will be added here!
-QUESTION! I was having a hell of a time getting my images to show. When I looked via FTP, the file names were there, but the file sizes were 0. I deleted netPBM, re-initialised the module and set image processing preferences to GD. ta-daah, my images all show!
So, would a tip about how to know NOT not to use netPBM - if you are haveing problems with your images- be good?
-Dragonmom
Last modified at 03:10:12 September 11 2006
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation.