Re: [Gimp-user] GIMP 2.10 .xcf files can't open in GIMP 2.8

[Liam R E Quin]

On Wed, 2020-12-02 at 13:00 -0500, Techno wrote:
> 
> Well, it's good that I can pass the version 2.8 files to 2.10. I just
> have to plan which way something's going carefully.

When you do Save As in 2.10, you'll see the bottom of the dialogue
gives you the chance to save with "slower but better compression", and
if you hover there you get a list of 2.10 features you are using that
prevent 2.8 from interpreting the file.

The least obvious is probably layer modes - you will need to switch
each layer back to the legacy layer modes by clicking on the icon just
to the right of the layer mode drop down.

The most obvious is probably that 2.8 is limited to 8-bit per channel
encoding (precision).

So if you go through and remove new features you can save for 2.8, but
of course this may affect the appearance of the image.

ankh

-- 
Liam Quin - web slave for https://www.fromoldbooks.org/

slave ankh on IRC

___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Image Compression

[Rick Strong]

You haven't said whether the resultant PDFs are for printing or for web 
viewing. And are you referring to a PDF of one page, letter size, or many 
pages of a larger size? Nor do you tell us what size you think a "normal" 
PDF is.


For printing you can get away with 260 dpi images.
For web viewing try 96 dpi, as has been suggested.
For a many-page PDF of course the file will be large.

Rick S.



-Original Message- 
From: Jason Amerson via gimp-user-list

Sent: Wednesday, December 02, 2020 10:59 AM
To: GIMP Support
Subject: [Gimp-user] Image Compression

Hello,

I scanned in a magazine as JPEGs, 300 dpi and high compression, but
still each file is over a megabyte. When I create a PDF using these
files, it is over 250 MB. I was wondering if you could tell me how to
compress these files in GIMP so that the resulting PDF will be of
normal size.

Thank you,

Jason 


___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Cliff Pratt via gimp-user-list]

Just out of curiosity, probably nothing to do with your problem, what do
you mean by "my system didn't like $HOME/"? In Unix-like systems, the $HOME
variable equates to /home/, usually.

Cheers,

Cliff

On Thu, Dec 3, 2020 at 5:30 PM Rick Kline  wrote:

> I found where GIMP plug-ins are stored by searching with "where is the
> gimp plugins directory Mac” and got the reply "User-private plugins are
> stored under $HOME/Library/Application Support/GIMP/2.8/plug-ins/. NOTE:
> Check "Preferences > Folders" to confirm your plug-ins directory.”
>
> Of course my system didn’t like $HOME/… so I navigated in a window and
> typed/tabbed my way there in the cp command. pds is in the plug-ins
> directory, so I’ll restart GIMP and see what happens.
>
> Thanks again.
> Rick
>
>  * * ** *** *  * *
> It’s better to wave at a stranger than to ignore a friend
>  * * ** *** *  * *
>
>
>
> > On Dec 2, 2020, at 11:23 PM, Partha Bagchi  wrote:
> >
> > I'm not familiar with the GIMP.app folder structure and so I can't help
> there. I build my own and that's available on my website.
>
> ___
> gimp-user-list mailing list
> List address:gimp-user-list@gnome.org
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> List archives:   https://mail.gnome.org/archives/gimp-user-list
>


-- 
My Amazon author page : https://amazon.com/author/cliffpratt
My Facebook author page : https://www.facebook.com/cliffprattauthor
My Search on Kobo : https://www.kobo.com/search?query=Cliff+Pratt
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Rick Kline]

Thanks Kevin,

I’ll get the file and try to build, although that’s not my strong suit.

Rick
 * * ** *** *  * * 
It’s better to wave at a stranger than to ignore a friend
 * * ** *** *  * * 



> On Dec 3, 2020, at 8:21 PM, Kevin Cozens  wrote:
> 
> On 2020-12-03 7:22 p.m., Rick Kline wrote:
>> The image is a closeup of a scorched portion of the Mars Rover Opportunity’s 
>> heat shield that was burned during its trip through the Martian atmosphere.
> 
> ok, ty. That explains why I was seeing what looked like a honeycomb in part 
> of the image.
> 
>> Thanks for the info. I’ll try to get a working plugin now that I’ve found 
>> the plugin directory at
>> rickkline/Library/Application Support/GIMP/2.10/plug-ins
> 
> FYI, I downloaded the PDS plug-in source code from:
>http://areo.info/gimp/gimp-2.8/pds-2.4.116.tar.gz
> 
> I tried to build it for use with the 2.99 (development) version of GIMP. 
> There were errors in the pds.c file which lead me to believe the way that 
> plug-ins tie in to GIMP has changed. I don't have time right now to work out 
> what changes are required to fix the compile errors.
> 
>> Do I need to use the cp command or can I copy it in Finder?
> 
> That's a question for a Mac user.
> 
> -- 
> Cheers!
> 
> Kevin.
> 
> http://www.ve3syb.ca/   | "Nerds make the shiny things that
> https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
>| that's why we're powerful"
> Owner of Elecraft K2 #2172  |
> #include  | --Chris Hardwick
> ___
> gimp-user-list mailing list
> List address:gimp-user-list@gnome.org
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> List archives:   https://mail.gnome.org/archives/gimp-user-list

___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Kevin Cozens]

On 2020-12-03 7:22 p.m., Rick Kline wrote:
The image is a closeup of a scorched portion of the Mars Rover Opportunity’s 
heat shield that was burned during its trip through the Martian atmosphere.


ok, ty. That explains why I was seeing what looked like a honeycomb in part 
of the image.


Thanks for the info. I’ll try to get a working plugin now that I’ve found 
the plugin directory at

rickkline/Library/Application Support/GIMP/2.10/plug-ins


FYI, I downloaded the PDS plug-in source code from:
http://areo.info/gimp/gimp-2.8/pds-2.4.116.tar.gz

I tried to build it for use with the 2.99 (development) version of GIMP. 
There were errors in the pds.c file which lead me to believe the way that 
plug-ins tie in to GIMP has changed. I don't have time right now to work out 
what changes are required to fix the compile errors.



Do I need to use the cp command or can I copy it in Finder?


That's a question for a Mac user.

--
Cheers!

Kevin.

http://www.ve3syb.ca/   | "Nerds make the shiny things that
https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
| that's why we're powerful"
Owner of Elecraft K2 #2172  |
#include  | --Chris Hardwick
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Rick Kline]

Perfect, thanks, Partha.
I saw the cp command and thought, why can’t I just drag it there myself?

Rick
 * * ** *** *  * * 
It’s better to wave at a stranger than to ignore a friend
 * * ** *** *  * * 



> On Dec 3, 2020, at 8:12 PM, Partha Bagchi  wrote:
> 
> If you show the folder structure in Finder, you can use finder. Otherwise use 
> the cp command.
> 
> On Thu, Dec 3, 2020 at 7:22 PM Rick Kline  > wrote:
> The image is a closeup of a scorched portion of the Mars Rover Opportunity’s 
> heat shield that was burned during its trip through the Martian atmosphere.
> 
> Thanks for the info. I’ll try to get a working plugin now that I’ve found the 
> plugin directory at 
> rickkline/Library/Application Support/GIMP/2.10/plug-ins
> 
> Do I need to use the cp command or can I copy it in Finder?
> 
> Thanks.
> Rick
> 
>  * * ** *** *  * * 
> It’s better to wave at a stranger than to ignore a friend
>  * * ** *** *  * * 
> 
> 
> 
> > On Dec 3, 2020, at 12:43 PM, Kevin Cozens  > > wrote:
> > 
> > On 2020-12-03 12:24 a.m., Rick Kline wrote:
> >> Like magic: changed file type to .data
> >> GIMP opens with width, height, offset (which I ignore, because I can’t 
> >> find a proper header descriptor) and image type.
> >> Set height and width to 1024 and 1024, file type to Gray unsigned 16-bit 
> >> Little Endian, and it opens as desired.
> > 
> > I downloaded the source for the 2.4.116 version of the PDS plug-in for 
> > GIMP. To build it for Linux (I don't have access to a Mac) I needed to 
> > comment out the include of the gimpcompat.h in the pds.c file.
> > 
> > I told gimp 2.10 to load the 1p157746813eff40b8p2363l3m1.img that you 
> > mentioned as a sample. It loaded the image up right away without asking me 
> > for any information. I did not have to change the file selection or tell 
> > GIMP what type of file I'm loading.
> > 
> > I have no idea what I'm looking at in the sample image but the plug-in 
> > works. What I have found is that GIMP 2.10 hangs when trying to view the 
> > image properties.
> > 
> > FYI, in the pds.c file that is in version 2.4.116 of the plug-in it says it 
> > "Loads files of the NASA PDS image format" with supported file extensions: 
> > img, imq, pds, edr, bb1, bb2, bb3, bb4, ir1, ir2, ir3, n07, n15, sur, sun, 
> > red, grn, blu, sgr, vio, qub, or lbl.
> > 
> > -- 
> > Cheers!
> > 
> > Kevin.
> > 
> > http://www.ve3syb.ca/    | "Nerds make 
> > the shiny things that
> > https://www.patreon.com/KevinCozens  | 
> > distract the mouth-breathers, and
> >| that's why we're powerful"
> > Owner of Elecraft K2 #2172  |
> > #include  | --Chris Hardwick
> > ___
> > gimp-user-list mailing list
> > List address:gimp-user-list@gnome.org 
> > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list 
> > 
> > List archives:   https://mail.gnome.org/archives/gimp-user-list 
> > 
> 
> ___
> gimp-user-list mailing list
> List address:gimp-user-list@gnome.org 
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list 
> 
> List archives:   https://mail.gnome.org/archives/gimp-user-list 
> 

___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Partha Bagchi via gimp-user-list]

If you show the folder structure in Finder, you can use finder. Otherwise
use the cp command.

On Thu, Dec 3, 2020 at 7:22 PM Rick Kline  wrote:

> The image is a closeup of a scorched portion of the Mars Rover
> Opportunity’s heat shield that was burned during its trip through the
> Martian atmosphere.
>
> Thanks for the info. I’ll try to get a working plugin now that I’ve found
> the plugin directory at
> rickkline/Library/Application Support/GIMP/2.10/plug-ins
>
> Do I need to use the cp command or can I copy it in Finder?
>
> Thanks.
> Rick
>
>  * * ** *** *  * *
> It’s better to wave at a stranger than to ignore a friend
>  * * ** *** *  * *
>
>
>
> > On Dec 3, 2020, at 12:43 PM, Kevin Cozens  wrote:
> >
> > On 2020-12-03 12:24 a.m., Rick Kline wrote:
> >> Like magic: changed file type to .data
> >> GIMP opens with width, height, offset (which I ignore, because I can’t
> find a proper header descriptor) and image type.
> >> Set height and width to 1024 and 1024, file type to Gray unsigned
> 16-bit Little Endian, and it opens as desired.
> >
> > I downloaded the source for the 2.4.116 version of the PDS plug-in for
> GIMP. To build it for Linux (I don't have access to a Mac) I needed to
> comment out the include of the gimpcompat.h in the pds.c file.
> >
> > I told gimp 2.10 to load the 1p157746813eff40b8p2363l3m1.img that you
> mentioned as a sample. It loaded the image up right away without asking me
> for any information. I did not have to change the file selection or tell
> GIMP what type of file I'm loading.
> >
> > I have no idea what I'm looking at in the sample image but the plug-in
> works. What I have found is that GIMP 2.10 hangs when trying to view the
> image properties.
> >
> > FYI, in the pds.c file that is in version 2.4.116 of the plug-in it says
> it "Loads files of the NASA PDS image format" with supported file
> extensions: img, imq, pds, edr, bb1, bb2, bb3, bb4, ir1, ir2, ir3, n07,
> n15, sur, sun, red, grn, blu, sgr, vio, qub, or lbl.
> >
> > --
> > Cheers!
> >
> > Kevin.
> >
> > http://www.ve3syb.ca/   | "Nerds make the shiny things that
> > https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
> >| that's why we're powerful"
> > Owner of Elecraft K2 #2172  |
> > #include  | --Chris Hardwick
> > ___
> > gimp-user-list mailing list
> > List address:gimp-user-list@gnome.org
> > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> > List archives:   https://mail.gnome.org/archives/gimp-user-list
>
> ___
> gimp-user-list mailing list
> List address:gimp-user-list@gnome.org
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> List archives:   https://mail.gnome.org/archives/gimp-user-list
>
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Rick Kline]

The image is a closeup of a scorched portion of the Mars Rover Opportunity’s 
heat shield that was burned during its trip through the Martian atmosphere.

Thanks for the info. I’ll try to get a working plugin now that I’ve found the 
plugin directory at 
rickkline/Library/Application Support/GIMP/2.10/plug-ins

Do I need to use the cp command or can I copy it in Finder?

Thanks.
Rick

 * * ** *** *  * * 
It’s better to wave at a stranger than to ignore a friend
 * * ** *** *  * * 



> On Dec 3, 2020, at 12:43 PM, Kevin Cozens  wrote:
> 
> On 2020-12-03 12:24 a.m., Rick Kline wrote:
>> Like magic: changed file type to .data
>> GIMP opens with width, height, offset (which I ignore, because I can’t find 
>> a proper header descriptor) and image type.
>> Set height and width to 1024 and 1024, file type to Gray unsigned 16-bit 
>> Little Endian, and it opens as desired.
> 
> I downloaded the source for the 2.4.116 version of the PDS plug-in for GIMP. 
> To build it for Linux (I don't have access to a Mac) I needed to comment out 
> the include of the gimpcompat.h in the pds.c file.
> 
> I told gimp 2.10 to load the 1p157746813eff40b8p2363l3m1.img that you 
> mentioned as a sample. It loaded the image up right away without asking me 
> for any information. I did not have to change the file selection or tell GIMP 
> what type of file I'm loading.
> 
> I have no idea what I'm looking at in the sample image but the plug-in works. 
> What I have found is that GIMP 2.10 hangs when trying to view the image 
> properties.
> 
> FYI, in the pds.c file that is in version 2.4.116 of the plug-in it says it 
> "Loads files of the NASA PDS image format" with supported file extensions: 
> img, imq, pds, edr, bb1, bb2, bb3, bb4, ir1, ir2, ir3, n07, n15, sur, sun, 
> red, grn, blu, sgr, vio, qub, or lbl.
> 
> -- 
> Cheers!
> 
> Kevin.
> 
> http://www.ve3syb.ca/   | "Nerds make the shiny things that
> https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
>| that's why we're powerful"
> Owner of Elecraft K2 #2172  |
> #include  | --Chris Hardwick
> ___
> gimp-user-list mailing list
> List address:gimp-user-list@gnome.org
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> List archives:   https://mail.gnome.org/archives/gimp-user-list

___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Dave Stevens]

On Thu, 03 Dec 2020 18:27:36 +0100
Pieter van Oostrum  wrote:

> Gimp > Preferences > Folders > Plug-ins

on my 2.10.18 mint it's Edit > Preferences > Folders > Plug-ins

Dave
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Kevin Cozens]

On 2020-12-03 12:24 a.m., Rick Kline wrote:

Like magic: changed file type to .data
GIMP opens with width, height, offset (which I ignore, because I can’t find a 
proper header descriptor) and image type.
Set height and width to 1024 and 1024, file type to Gray unsigned 16-bit Little 
Endian, and it opens as desired.


I downloaded the source for the 2.4.116 version of the PDS plug-in for GIMP. 
To build it for Linux (I don't have access to a Mac) I needed to comment out 
the include of the gimpcompat.h in the pds.c file.


I told gimp 2.10 to load the 1p157746813eff40b8p2363l3m1.img that you 
mentioned as a sample. It loaded the image up right away without asking me 
for any information. I did not have to change the file selection or tell 
GIMP what type of file I'm loading.


I have no idea what I'm looking at in the sample image but the plug-in 
works. What I have found is that GIMP 2.10 hangs when trying to view the 
image properties.


FYI, in the pds.c file that is in version 2.4.116 of the plug-in it says it 
"Loads files of the NASA PDS image format" with supported file extensions: 
img, imq, pds, edr, bb1, bb2, bb3, bb4, ir1, ir2, ir3, n07, n15, sur, sun, 
red, grn, blu, sgr, vio, qub, or lbl.


--
Cheers!

Kevin.

http://www.ve3syb.ca/   | "Nerds make the shiny things that
https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
| that's why we're powerful"
Owner of Elecraft K2 #2172  |
#include  | --Chris Hardwick
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Opening uncompressed NASA image files in GIMP

[Pieter van Oostrum]

Rick Kline  writes:

> The cp command didn’t work. No directory exists:
> /Applications/GIMP.app/Contents/Resources/lib/gimp/2.0/plug-ins does not exist
>
> The GIMP app exists in /Applications without a subdirectory. Maybe I
> need to hunt for a plugins directory…

The plug-in directory can be found under Gimp > Preferences > Folders > 
Plug-ins.
-- 
Pieter van Oostrum
www: http://pieter.vanoostrum.org/
PGP key: [8DAE142BE17999C4]
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Image Compression

[Dr. Jason L. Amerson]

Thank you for the information.

On December 2, 2020 17:47:44 Øyvind Kolås  wrote:


On Wed, Dec 2, 2020 at 4:59 PM Jason Amerson via gimp-user-list
 wrote:

I scanned in a magazine as JPEGs, 300 dpi and high compression, but
still each file is over a megabyte. When I create a PDF using these
files, it is over 250 MB. I was wondering if you could tell me how to
compress these files in GIMP so that the resulting PDF will be of
normal size.


Your problem might be your PDF creation tool (unstated), rather than
your input images. If the images are black and white (or grayscale)
using TIFFs instead of JPEG might help - but PDF is also capable of
embedding JPG images directly inside which your workflow has not done
(unless you have roughly 250 pages...).

/pippin
___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list


___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list

Re: [Gimp-user] Image Compression

[Dr. Jason L. Amerson]

Thank you for your help. I will give that a try. I know about copyright 
issues but when I scan in books or magazines it is for my personal use. I 
never distribute them.


On December 2, 2020 17:46:20 Liam R E Quin  wrote:


On Wed, 2020-12-02 at 10:59 -0500, Jason Amerson via gimp-user-list
wrote:

Hello,

I scanned in a magazine as JPEGs, 300 dpi and high compression, but
still each file is over a megabyte. When I create a PDF using these
files, it is over 250 MB. I was wondering if you could tell me how to
compress these files in GIMP so that the resulting PDF will be of
normal size.


A PDF for printing is nomally hundreds of megabytes per page.

if you mean, normal compared to PDF files on the Web, scale the images
down to e.g. 96ppi. )96dpi). You may need to use unsharp mask on htem a
little afterwards.

Obviously a magazine will be copyright, as Cliff pointed out, so
remember it's not in general legal to redistribute even for no money.
unless you get permission, unless both the magazine and all items in it
are out of copyright- e.g. it's mover than 70 years since the death of
any artist or writer involved.

Liam (slave ankh)


--
Liam Quin - web slave for https://www.fromoldbooks.org/
with fabulous vintage art and fascinating texts to read.
Click here to have the slave rewarded with heavier chains.

___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list


___
gimp-user-list mailing list
List address:gimp-user-list@gnome.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives:   https://mail.gnome.org/archives/gimp-user-list