Serendipity *RULES* <grin>
Just before reading your post and after following an unreproducible web of references and links I had found <http://www.graphicsmagick.org/>. I found hints that what I wanted was possible - but how was unclear.


"montage -geometry <size> <file1> <file2> ...<filen> <output>" resembled what I'd seen. I then used "montage" as a search term at <https://manpages.debian.org/>. That delivered <https://manpages.debian.org/stretch/graphicsmagick-imagemagick-compat/montage.1.en.html> which described what I wanted.

There are strong hints that its output will be a "miff" format file. It's not yet clear if that can be converted to a "png" format file.

If that can not be done, it will not be usable on a MATE panel.
HOWEVER I've found references on <http://wiki.tcl.tk/> that I can achieve a suitable substitute.

" How the program decides how to arrange the pictures " is not terribly important as long as it is repeatable.

I doubt authors were thinking of my constraints.
*HOWEVER*, if it works I'm happy.
I'm off to discover just what a "miff" formatted image might be.

As I've said before, "If retirement is not for learning, what use is it?"

Thank you.
I've homework to do.



On 02/14/2018 05:15 PM, Denis Heidtmann wrote:
montage -geometry <size> <file1> <file2> ...<filen> <output>,

where:
<size> is the horizontal number of pixels wide the result should be.
The number of pixels of an image can be found by right-clicking on
the name of the file, choosing properties, then select the image tab.
You will then see the width and height of the image in pixels.
This value is the size of one of the files. If the files significantly
differ in sizes, pick the largest to preserve all resolution.  How the
program decides how to arrange the pictures I do not know.  Experiment.
If you want to scale the size down, you could  experiment with a smaller
number--try half.

(If the vertical size is to be specified prepend an x to the number.)

The above are my  notes on doing what you want with scanned images.  You
will likely need to read the docs and make adjustments.

-Denis

On Wed, Feb 14, 2018 at 12:59 PM, Rich Shepard <rshep...@appl-ecosys.com>
wrote:

On Wed, 14 Feb 2018, Richard Owlett wrote:

Consider two 48x48 icons. I wish a single 48x96 icon. I've already looked
at Gimp and ImageMagick. They are OVERkill. Like using LaTex to
concatenate two 10 character strings. Would prefer png abut either bmp or
jpeg would also work.


   Then underuse them! Or, print, paste, and scan.

Rich


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