Re: [Gimp-user] No luck loading Gimp on MacBook Pro

[Jeffry Killen]

I have successfully installed Gimp on Mac mini and Macbook Pro running Yosemite 
( haven't
upgraded for various reasons). In Preferences there is a panel called Security 
and Privacy.
I am assuming it is virtually the same on your system. It has a section titled
"Allow apps downloaded from" with several options represented by radio buttons.
I have mine set to "Mac app store and identified developers"

Since the Gimp developers don't fall into this category, the system will not 
allow it to install.
HOWEVER. When the dialog telling me that it is from unidentified developers 
comes up
during the install process, it has an option for making an exception for the 
current app.

I used this to let the system continue installing it. It also requires an admin 
user and password.
Perhaps you missed this step, or it may not be available to you. If it isn't 
then someone else
will have to offer advice/info.

As a conjecture, based on Apple's current business model, opened source apps 
may be being
pushed out the way in favor of proprietary and favored programs and authors, 
with the cover
story being security concerns.

Jeff K
> On Nov 21, 2017, at 2:35 PM, Nat Johnson  wrote:
> 
> Am using High Sierra, but Mac will not verify download no matter what I do.
> 
> Tried versions #18 & #22
> 
> Any thoughts?
> 
> 
> 
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Re: [Gimp-user] No luck loading Gimp on MacBook Pro

[Ross Martinek]

This works on Sierra, might work on High Sierra:

(You can restore the ‘Anywhere’ option to Gatekeeper.)

While the reasoning may be understandable, helping to prevent nefarious apps 
that could include malware from running on your Mac, the end result is a bit 
draconian, since it can prevent you from running many Mac apps that are 
available from hobbyists, small-scale developers, or open source projects.

In previous versions of the Mac OS, you could set Gatekeeper to allow apps to 
run from the:

•   •  App Store

•   •  App Store and identified developers

•   •  Anywhere

The Anywhere option is missing from macOS Sierra, but you can re-enable the 
option with this simple Terminal trick.

Launch Terminal, located in your /Applications/Utilities folder.

Enter the following command at the Terminal prompt:

sudo spctl --master-disable   (Note that there is a double dash, not an 
em-dash, in front of “master."

Press enter or return.

You’ll be asked for the administrator password. Enter the password and press 
enter or return.

To verify that the Anywhere option has been restored:

Open System Preferences and select the Security & Privacy preference pane.

Select the General tab.

You’ll see that the Anywhere option is once again available.




Ross


> On Nov 21, 2017, at 4:35 PM, Nat Johnson  wrote:
> 
> Am using High Sierra, but Mac will not verify download no matter what I do.
> 
> Tried versions #18 & #22
> 
> Any thoughts?
> 
> 
> 
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[Gimp-user] No luck loading Gimp on MacBook Pro

[Nat Johnson]

Am using High Sierra, but Mac will not verify download no matter what I do.

Tried versions #18 & #22

Any thoughts?

 

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Re: [Gimp-user] problems with understand how to resize images properly

[Steve Kinney]

On 11/20/2017 09:05 AM, menglor wrote:
> Good Day!
> 
> I am a newbie learner to “” and I am trying to accomplish a series of steps, 
> but
> things just don’t seem to work out for me.
> 
> I have 2 problems, well more but I wont go into everything 
> 
> - Basically   I am trying to import a picture of varing sizes, and then 
> resize
> them to fit a specific size.
> 
> For example,  I am importing an image  that is 5” x 3”,   and wanting to print
> it on a label,
> So I need to be able to copy it out of GIMP, and past it into a Avery Shipping
> Label template in Word.
> 
> I have been a little successful, but I am having issues with the sizes 
> changing.

Hi menglor,

The process you describe will give you images of different sizes if the
originals have different DPI values, because when you scale an image to
be a certain number of inches in size, the GIMP looks at the DPI
resolution of the image first, then scales the image to be X number of
pixels wide/tall based on that DPI and the physical dimensions you specify.

Example:  A 300 DPI image scaled to 1" x 1" will come out 300 pixels
wide.  A 150 DPI image scaled to 1" x 1" will come out 150 pixels wide -
half "size" of the 300 DPI one.

Scaling images by adjusting their size in inches (or centimeters, etc.)
is rarely done.  Useful results require resetting the DPI of images as
necessary, so a set of images of the same size in inches, cm or etc.
will also be the same size in pixels.

Or can multiply the size in inches of the output images you want by the
DPI you want, to get the correct dimensions in pixels for /all/ the
images intended to be the same size when printed.  From that point on,
you can just scale your whole batch of images to the same size in pixels
and ignore the size "in inches."

The DPI setting in an image is only a number recorded in the file
header; changing the DPI of an image changes nothing but that one
number, and as far as I know it does not affect the actual or displayed
/ printed size of the image, except when scaling the image in an editor
like the GIMP.

Typical DPI values:

300 DPI for high quality print
150 DPI for office documents etc. where "good enough is good enough"
96 DPI for on-screen display
72 DPI - a legacy default setting based on printers' "point" size

Note that doubling the DPI of an image while maintaining the same print
size when scaling, multiplies the size of the resulting file on disk by
about 4x.  Exporting images in lossless PNG format (vs. lossy JPG) for
maximum print quality also creates much larger file sizes on disk.  So
big, high quality print jobs can take up a lot of space in storage or
time in transit across the network.

You also mentioned printing via a Word document, and that the sizes you
get are a little off.  I think that's to be expected, because word
processors were not intended for "pre-press" work, a.k.a. printing
images with high accuracy.

I use Scribus, a Free desktop publishing application, for pre-press
work.  Make your images, put them on the page exactly where you want
them, export the file as PDF and print that:  Viola, accurate results.

For really precise positioning on page, i.e. when printing on peel and
stick label stock or etc., it may be necessary to print a test page,
measure any placement errors, and adjust the Scribus master document to
get your required results from that particular printer.

https://www.scribus.net/

:o)



> Steps I am completing.
> 
> 1-Open Image.
> 2-Click menu “Image”  and then click Scale image
> 3-I assign the Size height as  1.30 inches  (because of the linked 
> reference,
> width defaults to  2.0 inches ISH
> 4-Resolution seems to imply its  76 x 76
> 5-And it seems like it works, though when I COPY and paste into Word and 
> print.
> The size is a little off.
> 
> However, I went on to the next picture, which ultimately was a desktop  image 
> , 
> I completed the following
> 
> 1-Open Image.
> 2-Click menu “Image”  and then click Scale image
> 3-I assign the Size height as  1.30 inches  (because of the linked 
> reference,
> width defaults to  2.0 inches ISH
> 4-Resolution seems to imply its  560 x 560  (don’t have the real numbers 
> handy)
> 5-Then I copy it , and then Paste into Word.
> 6-When I look at the image in my template  the image height should be 
> 1.3, but
> its about 2.3.  and the width is also messed up.
> 
> I am confused. If I tell them image to be 1.3  why is it not listening?   I
> understand there is a setting called Print size somewhere, but I am trying to
> make the image  Size X, but something else is getting in the way.
> 
> 
> I am hoping someone can give me an answer,  or maybe point me to a Youtube 
> video
> that goes over it.   I have watched about 6-8 tutorials, but I cant find
> anything that  goes into that whole aspect of


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Re: [Gimp-user] Need help with layer sizes

[ugajin]

Import the largest layer first?

 On Tue, 21 Nov 2017 03:34:40 + RunSebastian 
for...@gimpusers.com wrote  

Hello, 
 
I started an .xcf file with four layers. The first layer is smaller than the 
others. I intend to make them all the same size but want to edit them first. 
 
However, when I imported all four layers, the program automatically cropped 
them 
all to be the same size as the first layer. I want them all to maintain their 
original size until I've edited them and am ready to crop/resize them to fit 
the 
first layer's size. 
 
I've tried Fit Canvas to Layers. It doesn't fix the problem. 
 
Any guidance would be most appreciated. 
 
Thank you in advance. 
 
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Re: [Gimp-user] Need help with layer sizes

[Carol Spears]

On Mon, Nov 20, 2017 at 10:34 PM, RunSebastian  wrote:

>
> However, when I imported all four layers, the program automatically
> cropped them
> all to be the same size as the first layer.
>
Which program?

I ask because if that program is smart enough to resize the layers, perhaps
there is an
option to not do that.


> I've tried Fit Canvas to Layers.  It doesn't fix the problem.
>
Layer -->Layer to image size on a smaller layer will fill the remaining
space with alpha or
background color depending on what the layer is capable of.


>
> Any guidance would be most appreciated.
>
> Perhaps users or authors of the program you used can be of assistance.

carol
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Re: [Gimp-user] limiting the print size of a photo

[Michael Schumacher]

On 11/21/2017 05:52 AM, Glenda Guy wrote:

> Hello, I am establishing a photo website and would like to have two
> options for digital photo downloads:  6x4 to 10x15 and 12x18 upwards.
> All my photos are taken at 300ppi.
> 
> Is there a way in GIMP where I can change the photos so a customer
> can download a file that will print with optimal results 10x15 down
> to 6x4 but no bigger unless they choose the 12x18 upwards file?

For the restrictive "no bigger" that you likely have in mind, the answer
is: No.

Nothing will prevent anyone from printing any image at any size.

But you control the number of original pixels they get.

There is Image -> Scale to do this, but I assume you already know how to
scale images to any desired size in pixels.

The customers can scale the image up again, of course, and have the
interpolation method of their choice invent new pixels from what they
got. These do not necessarily look the same, so I guess this would
suffice to fulfill your goal.

-- 
Regards,
Michael
GPG: 96A8 B38A 728A 577D 724D 60E5 F855 53EC B36D 4CDD
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[Gimp-user] Need help with layer sizes

[rich404]

>Hello,
>
>I started an .xcf file with four layers.  The first layer is smaller
>than the others.  I intend to make them all the same size but want to
>edit them first.
>
>However, when I imported all four layers, the program automatically
>cropped them all to be the same size as the first layer.  I want them
>all to maintain their original size until I've edited them and am
>ready to crop/resize them to fit the first layer's size.
>
>I've tried Fit Canvas to Layers.  It doesn't fix the problem.
>

Gimp does not 'automatically' crop anything. It depends on the procedure used.

Please give more details of your work flow.

If you copy, paste and **anchor** the Floating-Selection it crops to the size of
the layer pasted into.

If you copy, paste and **To New Layer** then the size is retained but can be
larger than the canvas size. In that case use Image -> Fit Canvas to layers.

If you open several images using File -> Open-as-Layers then the canvas size is
the size of the first image opened. Use Image -> Fit Canvas to Layers. However,
the obvious is open the largest image first.

rich: www.gimp-forum.net

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[Gimp-user] Need help with layer sizes

[RunSebastian]

Hello,

I started an .xcf file with four layers.  The first layer is smaller than the
others.  I intend to make them all the same size but want to edit them first.

However, when I imported all four layers, the program automatically cropped them
all to be the same size as the first layer.  I want them all to maintain their
original size until I've edited them and am ready to crop/resize them to fit the
first layer's size.

I've tried Fit Canvas to Layers.  It doesn't fix the problem.

Any guidance would be most appreciated.

Thank you in advance.

-- 
RunSebastian (via www.gimpusers.com/forums)
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[Gimp-user] limiting the print size of a photo

[Glenda Guy]

Hello, I am establishing a photo website and would like to have two options for 
digital photo downloads:  6x4 to 10x15 and 12x18 upwards. All my photos are 
taken at 300ppi.

Is there a way in GIMP where I can change the photos so a customer can download 
a file that will print with optimal results 10x15 down to 6x4 but no bigger 
unless they choose the 12x18 upwards file?

Thanks for your help - Glen
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