Well done!

is this topic still alive? no posts after January...
and also: is it the correct one where to post questions on writing g'mic commands?
because, I just would like to begin understanding/writing g'mic lines of codes
should I enter here my questions or look at g'mic specific forum?
thanks...

This was the post announcing the new "sub forum", you can see all the individual posts here: http://gimpchat.com/viewforum.php?f=28
And yes, G'MIC and this forum are still "alive"

If you plan on writing gmic scripts, take a look on the sourceforge wiki for tutorials: gmic wiki
There is also a goldmine of old posts on the flickr forum (we tend to use it for mostly technical/scripting stuff to keep from cluttering up the gimpchat one), if you need any help just ask and we'll try our best

Many thanks, GC!
I did already download the GMIC_Reference.pdf (related to the incoming new release) and copied/created the "beginner's commands" (my_first_filter_command, filter_tuto, better_filter), defined also "my_directory" and put everything in the gmic folder under AppData/Roaming.
But as soon as I wanted reproduce under gmic the function I wrote in a script-fu, I went lost.
My goal was enough simple:
- 1 : open an image
- 2 : fade a little bit (50 pixels, more or less) the right side
- 3 : flip the layer
- 4 : combine the two layers in such a way that the faded sectors override each other, so to have a "reflected image" of about the double width of the original image
This was a function I was using since many years in another software, which I liked (and like).
I found under gmic the "linear_gradient", the "compose", the "mirror", the "append_tiles", but I could not find a way to solve point 4.
Also, I was also frustrated not finding in the reference (or in the existing gmic scripts I looked into) some possibilities in the commands that I expected when I was experimenting them (e.g. expand_x: is it true or it's just my poor understanding that it operates always on both side, left and right? or fade_linear: does it operates only on the width of the base image).
In general, what I find difficult was to get answers to questions in my mind: how can I do such and such? Probably I miss a so called User Guide, because Reference Manual are always very language, not objective, oriented.
I now will use all the links you gave to me and will see...
Thanks again

Let me just add that g'mic is not easy to get used to! It's intended to be very quick to use once you know it, but that means it's quite nasty to learn. One thing that still catches me out is a lot of commands are used in unexpected ways. Anyway, what you might need to use for that are:

-crop : if you use values outside image coordinates it will also expand (for example -crop[-1] -50,0,{w-1},{h-1} will add 50 pixels to the left), expand_x etc. are mostly used for creating an even border.
-image : you can use it with an opacity mask (for example -image[-1] [-2],0,0,0,0,1,[-3] which means draw image [-2] on top of image [-1] using image [-3] as an opacity mask)

If you can show me an example picture I could probably tell you one way of doing it, but another thing with gmic is there are usually lots of ways of doing the same thing - some may be faster/neater than others!

PS it might be best to start a new forum post for specific script questions since this is still the announcement post, or you could send a private forum message to me

I agree with garagecoder (of course! ).
There is a quite complete reference guide, but this is basically a quick overview of each available G'MIC command. It doesn't tell so much about how to use them to perform a particular task.
You are right, a 'user guide' could be a good thing to have. There are some wiki pages that are only waiting to be filled with interesting stuffs, so do not hesitate to do so if you feel you can bring your own vision of the software.

Alright, I am a bit frustrated and I am sure I may be in the wrong thread for this silly Problem. Just recently I found out about this awesome Plug in G'MIC, However I run and like my Gimp version 2.6.11 on my Windows 7 laptop. I don't care for Gimp 2.8 so I was very disappointed when every download suggestion I followed made me end up with G'MIC for gimp 2.8 gaaaaah. So after a long and argues search I finally found the correct download and yes I got G'MIC. So here is the new Problem, I can not get it to update. The Recommended Manuel Update is not working either since something May have been changed I know this may be a long shot, But is there any link that anyone can provide that gives me the Updates for G"MIC. Sadly I got version 1.0.3.2. That is the only one I was able to find anywhere. Even one of the Forum discussions that show how to Install it for Gimp 2.6.11 provides links that have long since been updated and redirect to the official G'MIC download site. What I love about gimp is that if I don't like a version I can go to the file archive and download which version I prefer. G'MIC does not seem to have that option. So long story short, Does anyone have any Idea how I can manually update my Filters for Gimp 2.6.11? or am I am forced to upgrade to have the ability to update my G'Mic Filters. I don't need every available filter but more than the basic what 25 would be nice.

Thank you for your help in advance.

G'MIC updates really only support the latest versions of G'MIC, Nini. Not sure you can get any more updates for the older versions of G'MIC that actually still support GIMP 2.6x.

Sad panda, not want I wanted to hear, but I figured that would be the answer. I was hoping there was still a way for a Manuel filter update. thanks though for the fast reply.

Just curious; have you tried to add the zipped file (don't use the installer) to GIMP 2.6x to see if that version works with GIMP 2.6x? More than likely it may not, but G'MIC for GIMP is quite self contained (presets are excecuted by the plugin itself) and uses GIMP for previews and to pass results back into GIMP. Try unzipping (assuming you are using 32-bit GIMP 2.6x) the file below (create a separate directly and link the plugin by adding in via the settings dialog withing GIMP).

http://gmic.eu/files/windows/gmic_gimp_win32.zip

Playing today for the first time with G'mic SKIN MASK by Iain Fergusson.
I've found it very interesting, because parametric on colours to adapt it to the source image.
Any plan to improve it further?
Or to add parameters on colours in "Detect Skin" by David?

Tried to use today Peiodic Dots, using defaults.
Got this error:



G'MIC 2.9.4 on Gimp 2.10.23 Samj

edit: it happens also on G'MIC 2.9.5pre december

Possible GMIC filter error in Artistic/hough sketch?

I encountered this problem, while doing some tests:

case A:
1.open an image
2.apply GMIC/Artistic/Hough Sketch (I use output on new active layer)
3.result OK. evident sketching lines on the image

case B:
1.open an image
2.add a frame using GMIC/Frames (blur)
3.result OK, image framed
4.apply GMIC/Artistic/Hough Sketch (I use output on new active layer)
5.result not OK. an almost totally white layer

It seems that Hough Sketch does not work properly on a frames image.

Can someone verify?

My environment:
- Winfows 10 up to date (my hardware does not support Windows 11)
- GIMP 2.10.32 (samj's pack)
- GMIC 3.2.4

Original image:

Output case A:

Output case B:

I can confirm this on:
Linux Mint 20.1
GIMP 2.10.34 PPA
GMIC 3.2.2

Thought it's a matter of alpha channel for that layer, but it does not make a difference if the layer has one or not.

Yep, I can reproduce that as well - kubuntu 20.04 / Gimp 2.10.34 / gmic 3.2.4

A couple of tests. Not alpha. not precision, not multiple layers.

It is the border, isolate with a selection inside the border and Hough Sketch works (although it leaves transparency as a border)

Yes, Rich, same solution I did find.
But, isn't it an error? Either in the Frame filter or in the Hough Sketch?

I would think it is an error. Best place to get Davids attention is https://discuss.pixls.us/tag/gmic

Ditto here.
gosgood@lydia ~ $ gmic -input Downloads/does_not_exist_01.jpg \
+fx_frame_blur. 30,30,0,5,0,0,128,128,128,0,5,255,255,255,2,2,1,0,0.5,0.5,0 \
+fx_houghsketchbw. 5,30,10,50,0.1,4,0,50,50

hough, upon whichfx_houghsketchbw is based, embodies a voting scheme. hough's orthodox use is to find alignments within images. The strange looking exemplar on the right hand end of the example in the technical reference encodes a voting tally where line segments of particular orientations and positions gain prominence and appear lighter in the voting tally. fx_houghsketchbw scans this tally and plots the line segments that garner the greater balances in the tabulation.
On the one hand, I am inclined to think that the frame so dominates this tally that it swamps other candidates, but on the other, I think the 'vote' shouldn't be that one-sided. `Tis early Sunday morning here on the eastern seaboard of North America. Dawn is breaking. There is time for extra coffee on days such as this and contemplation of things G'MIC. I happen to be preoccupied with Hough-like ruminations at present. Let us add this one to the pile.

I also do agree with you. We also need this kind of forum for proper interaction!

For Linux users only GEGL in Gimp will soon be able to call GMIC strings using the version of GMIC installed on the user's system using this plugin.

viewtopic.php?f=9&t=20652

This will be automatable using GEGL Graph syntax to chain GEGL and GMIC filters together and in theory I can make GEGL plugins that depend on Linux and the system's GMIC to work.