I have brushed up my python code and submitted the idea of the gradient editor to Sourceforge.
See http://sourceforge.net/projects/spectrag/.
This might become an external tools or be integrated in Inkscape...
Can anybody help me?

I'm sure someone on the developers mailing list can help.

So is this working code? How does it work when it comes to defining stops and later editing the stops?

The code is working, but as a separate tool, not integrated in Inkscape.
Gradients can be generated (by means of formulas), loaded (only "ggr") and saved (ggr, svg, png with the representation
of the gradient).

Python programmers are welcome.

SpectraG gradient editor:
http://sourceforge.net/project/showfiles.php?group_id=208302&package_id=250712&release_id=550605

Formulae:
http://sourceforge.net/project/showfiles.php?group_id=208302&package_id=250701&release_id=550560
Gradients (examples) created with the program:
http://sourceforge.net/project/showfiles.php?group_id=208302&package_id=250702&release_id=550559

Create a directory, unzip the compressed files in it and follow the instructions in the README file.

I have coded the capability to import the first gradient of an svg file.
Therefore it is now possible to load a gradient from an svg file and save it in ggr format,
which can be used in The Gimp or re-imported in Inkscape.

As a further step in the alpha development stage, I have added code that makes it
possible to edit a loaded gradient. The loaded gradient is transformed into a formula first
which can then be (saved and) edited and the gradient then saved as ggr again.

I have coded the import of Paintshop Pro gradients (PSPGradient and jgd) and prepared an example of how to use the program.
http://spectrag.wiki.sourceforge.net/tutorials

Any plans to make this so that you can choose from a variety of gradients that are in a svg?

rosros wrote:I have coded the import of Paintshop Pro gradients (PSPGradient and jgd) and prepared an example of how to use the program.
http://spectrag.wiki.sourceforge.net/tutorials

Thanks for the tutorial, I haven't had the time to look what you've been doing first hand. But this looks really good. It would be great to see it included with Inkscape as an Extension.

The program can already import gradients in the following formats svg, ggr, PSPgradient, grd. The export format is
only ggr (svg compatible!).

rosros wrote:The program can already import gradients in the following formats svg, ggr, PSPgradient, grd. The export format is
only ggr (svg compatible!).

May I ask why you removed all source code?

prokoudine wrote:

rosros wrote:The program can already import gradients in the following formats svg, ggr, PSPgradient, grd. The export format is
only ggr (svg compatible!).

May I ask why you removed all source code? :)

Maybe because the later (or current) version is hosted at deviantArt now?
(See also this later topic here in the forum: «Spectra (Spectra256)»)

Dear Alexandre & all the others,
the current code is on DA (see link above) and is actually a partial exhumation of the (now very) old code.
"Spectra256" does not include the PSPgradient format but gradient export is possible to ggr (with alfa channel)
and map (256 color points, without alfa channel) formats. It should be deplorable that the old interpolation of
colorpoints (with external python libraries) has not been included, but OTOH that may be harder to notice...

I wanted to give it a try, but I can't access python files on the above provided SourceForge link. Is it moved ?

Hibou57 wrote:I wanted to give it a try, but I can't access python files on the above provided SourceForge link. Is it moved ?

Didn't you read the last two comments right above yours? ;)