PHPLOT Version 1 (works with PHP2 and PHP3)

This version has been obsoleted by versions 2 and 3. Please go to http://www.jeo.net/php/phplot/ for the latest version.

I've found PGPLOT an excellent programming tool. I'd like to see the same thing for PHP.

1. Portability
   • Issue: T. Boutell's GD package only has LZW compression for version gd1.2, (http://www.jeo.net/php/gd1.2.tar.Z) due to licensing issues. So naturally we can't use the fancier stuff in gd version 3.x unless we take a hit in GIF size.
   • Issue: PHP/FI2 doesn't have functions that support some of the newer functions in gd version 3.x
   • Issue: I'd like to make have routines for both PHP2 and PHP3 , gd1.2 and gd.1.3
   • Solution: Only use gd1.2 functions in code and use gd1.3 for commercial apps.
   • Proposal: Design code that will work with both PHP/2 and PHP/3 and PHP/4 or requires minimal modifications. (E.g. no for loops and no using the funky array allocation tricks in PHP/FI2 that thankfully went away with PHP/3.)

2. Layout
   What is the best way to aproach this? Function or Include.

   Back in PHP2 it didn't make much difference. Now with PHP3 and PHP4 its best to define a class for a general utility like this. Version 3 is defined as a class.

3. Packages to be written
   Convert Scale to Pixels: Done
   Create Axis and background: Done
   Create Axis Lables: Done
   Bar Charts for Y any value: Done Try it out
   Bar Charts for Y > 0 only: Done
   Bar Charts: Done in PHP2
   Scatter Plot: Done
   Error Bars: 0% done
   Smooth graph: 0% done
   Pie Chart: Done
   3-D Bar Charts (50% done)
   Area Chart: Done
   3-D Surface: (0% Done)
   Horizontal Bar chart? Does anyone care?
   Combination Charts: Done:

4. Licensing
   GPL and PHP