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  Posterize or make contour lines by defined colours
Posted by: pygmalion - 06-19-2020, 10:15 AM - Forum: General questions - Replies (4)

I have a picture as a result of a calculation program:

[Image: IOjSA6I.png]

There is also a legend for values:

[Image: Xtqyo2l.png]

Now, I would like to make a picture with seven colours (posterize) OR find six isocolor lines.  The six threshold colours can be extracted from the legend with equidistance.

Is something like that even possible in GIMP?  When I make posterize in GIMP it does the job but I don't like the colours that were automatically selected as threshold colours

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  Quick control of UI layout?
Posted by: TobyEggitt - 06-18-2020, 08:34 PM - Forum: General questions - Replies (2)

Hi all,

I use GIMP 2.8 for a variety of things, but lately I've been using it as a virtual whiteboard for remote training sessions.

In that mode, I set up a white-background canvas that's the same size as my screen, and set the user interface to:
full screen
1:1
100% zoom
canvas centered
no menubar
no statusbar
no scrollbar
no rulers

Then I just hit tab when I want to take control of things (which is pretty rare, since mostly I'm just using a pen)

The problem I'd like to resolve is that every time I start GIMP, or open a new "page" (i.e. new image) it defaults to a point where I have to set each of those things all over again, and seemingly one at a time.

Can I simplify this configuration? Two possible approaches came to mind:

1) perhaps there's a way to configure the defaults mode in which GIMP starts, and that addresses these, or most of these, things?
2) Could I do this from a script? I know nothing about GIMP's scripting language, but I'm a programmer, so it shouldn't be beyond me to work that out with some hints and reference material.

TIA,
Toby

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  GIMP and CPU and GPU
Posted by: jrickards - 06-18-2020, 03:26 PM - Forum: General questions - No Replies

Looking to purchase/build a new computer.

Does GIMP benefit from a GPU? In other words, should I spend the money on a GPU card or save the money and use an integrated video "card"?

GIMP will likely be my most demanding application, I'm not a gamer or programmer, just a regular user but also use this graphics application.

Thanks,

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  how to divide background into 4 equal vertical straight lines
Posted by: krok123567 - 06-18-2020, 10:52 AM - Forum: General questions - Replies (5)

i am trying to divide my blue backround into 4 vertical lines and i don't know how to

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  Problem with Path selection
Posted by: gimpuser23 - 06-18-2020, 08:29 AM - Forum: Older Gimp versions (2.8, 2.6....) - Replies (4)

Hi, I have a problem with Path selection alignment in Gimp 2.8. In a 1920 x 1080 file (with 72.00 x 72.00 resolution), I would create a square selection with the dimensions of 500 x 500 px. Out of that selection I would create a Path using 'To Path' option:

   

Up until this point everything is OK. However, I would then export the path using 'Export Path...' in 'Paths' tab. For further editing, I open the exported path in Inkscape:

   
   

Perhaps I import it wrong, but I never get the correct pixel dimensions like in Gimp (no matter what DPI value is set). For instance 500 x 500 from Gimp, would always be 668 x 668 pixels in Inkscape. Although, you can resize it to correct dimensions. Now, if I want to save the file (whether as 'Inkscape SVG (*.svg)' or 'Plain SVG (*.svg)'), certain issues arise if I want to use it again in Gimp.

When I import it (using 'Import Path...' in 'Paths' tab), 'Move Tool' selection box and the 'Path to Selection' option are completely out of sync:

   

It is also impossible for me to align it to the grid:

   

This is not the case only with Inkscape, for the same thing happens if i would rotate or scale the Path in Gimp itself (occasionally). I really don't understand what's going on or how to align it properly. Has anyone encounter this problem and knows what the issue is? Any help or insight would be much appreciated.

Thanx.

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  How to add spacing between UI elements?
Posted by: MirekDusinojc - 06-18-2020, 08:21 AM - Forum: General questions - Replies (4)

Hello, Im sort of new to GIMP here. After installing it on my Win10, all the UI elements seem to be cluttered and really close together, it is pretty hard to navigate within such a cluttered UI. Is there a way to add more spacing somehow? I saw other screenshots from Gimp and there the UI looks fine, but for some reason all the spacing is gone on my computer. Using the latest version of GIMP (2.10)
I added a screenshot of how cluttered the UI appears.



Attached Files Image(s)
   
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  How to convert PDF to a number of images?
Posted by: kenny1999 - 06-17-2020, 10:10 PM - Forum: Watercooler - Replies (1)

I have a PDF file which contains some pages
I'd like to convert them into images files, one image for one page,
e.g. jpg, png

Can I do it with GIMP?

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  Indexprint
Posted by: Xxxx - 06-17-2020, 07:20 PM - Forum: Extending the GIMP - Replies (18)

Code:
gimp_color_transform_new: using babl for 'GIMP built-in sRGB' -> 'DELL P170S'
Traceback (most recent call last):
 File "/usr/lib/gimp/2.0/python/gimpfu.py", line 857, in _run
   res = apply(func, params[1:])
 File "/home/ego/.config/GIMP/2.10/plug-ins/IndexprintDevelopment.py", line 152, in plugin_main
   app = IndexprintDevelopment.gui.ContactsheetApp()  # create instance of gtkBuilder app
 File "/home/ego/.config/GIMP/2.10/plug-ins/IndexprintDevelopment/gui.py", line 248, in __init__
   self.on_error(_("PyExiv2 not installed!"), _("Disabling exif functions.\n"+str(e)))
AttributeError: ContactsheetApp instance has no attribute 'on_error'

(Gimp 2.10.20 Linux)
A VERY good plugin, but now poorly maintained.
http://www.sullockenzlin.demon.nl/Gimp.html
If someone can help...

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  File exporting question
Posted by: Bepis - 06-17-2020, 03:23 AM - Forum: General questions - Replies (4)

Due to the nature of the work I do with gimp, I frequently export many images (sometimes hundreds) while working. Each image is saved as a bmp with the same file name, with only a number increasing by one each time. I have already sped up this process with keyboard shortcuts, but taking the time to name each image and increasing its number by one as to not overwrite the previous has become increasingly tedious. Is there anyway I can automate this process further? The only thing that needs to change for each file name is to increase the number by 1, is there any possible way to automate this in gimp? Thanks for your help.

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  two questions
Posted by: Carl - 06-17-2020, 02:30 AM - Forum: General questions - Replies (6)

GIMP 2.10.20

1) Wacom One sensitivity not working. Set to 'screen' and tried with 'opacity pressure' setting. I've watched the youtube tutorials and this is impossible to screw up yet its not working. I think there is a bug.

2) "shift+[" and "shift+]" are not working. These are default shortcuts to de/increase the brush size by 10.  De/increase by 1 with '[' and ']' work fine. 

Any help at all is appreciated. Thank you.






PS I wrote this already and then when I pressed post it said request to large and deleted everything I wrote. Gimp has me very confused and ready to go back to paint.net.  Angry

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