From Newsgroup: comp.misc

Quite impressed to discover that a sixel graphics renaissance seems to
be in progress <https://www.arewesixelyet.com/>.

This is an old idea invented by DEC from the 1980s, for a terminal
graphics mode that allowed for each line of characters to become 6
rows of pixels (rCLsix pixelrCY = rCLsixelrCY). A bit slow to send the resulting volume of data over a serial line, but modern network
connections cope with it just fine. It was eclipsed by the advent of
proper graphics terminals with more advanced display hardware,
accessed via network connections, X11, OpenGL and all the rest of it.
But now some folks are dusting off the old idea, and having some fun
with it.

Certainly a bit nicer than blocky character graphics.

What use is it? Think of remote access via SSH, where you have a need
for some basic ability to view graphics in your terminal emulator. The
above site gives a roll call of terminal emulators, and their status
of support (or not) for sixel graphics. Is yours in the list?
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

Sixel, ... what else?!?

<https://dev1galaxy.org/viewtopic.php?pid=53880#p53880>

Those snapshots would need to be updated. Chawan has improved a lot
since then.
--
3. Hitchhiker 11: (65) On the way back they sang a number of tuneful and reflective songs on the subjects of peace, justice, morality, culture,
sport, family life and the obliteration of all other life forms.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

On 2025-09-17, Lawrence DrCOOliveiro <ldo@nz.invalid> wrote:

Quite impressed to discover that a sixel graphics renaissance seems to
be in progress <https://www.arewesixelyet.com/>.

That web site gives a list of terminal emulators that support sixel
graphics. I'd be interested in seeing a list of software that
supports sixel graphics. Off the top of my head, i've used:

* gnuplot
https://sourceforge.net/p/gnuplot/patches/742/
* chafa
https://hpjansson.org/chafa/

I have also used gnuplot with xterm's Tektronix 4014 emulation.

https://en.wikipedia.org/wiki/Tektronix_4010
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

Ben Collver <bencollver@tilde.pink> wrote:

I'd be interested in seeing a list of software that supports sixel
graphics. Off the top of my head, i've used:

I use 'img2sixel [-P]' a lot. Libsixel's README has pointers to other
software too.

<https://github.com/saitoha/libsixel>

Eat adds even Sixels to GUI-Emacs' superpowers. Not as fast as
Img2Sixel, but always better than no Sixels at all.

Long ago I possibly stumbled over my own feet while trying to get the Sixel-Xserver built, that might be worth a retry, even if just for the
giggles.

If you plan an awesome-sixel-programs list, please consider Notabug,
Codeberg, Tildegit or a similar friendly neighbour as its home.
--
3. Hitchhiker 31: (18) At least, if it wasn't real, it did support them,
and as that is what sofas are supposed to do, this, by any test that
mattered, was a real sofa.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

On Wed, 17 Sep 2025 13:50:13 -0000 (UTC), Ben Collver wrote:

That web site gives a list of terminal emulators that support sixel
graphics. I'd be interested in seeing a list of software that supports
sixel graphics.

ThatrCOs less important, though, given the likely usage scenarios. This package <https://packages.debian.org/trixie/libsixel-bin> contains the img2sixel utility, which will convert various graphics formats to sixel.
That is enough to display the result in a sixel-supporting terminal
window.

With that, there isnrCOt much need for the usual graphics software to output sixel format directly.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

In comp.misc, Lawrence DOliveiro <ldo@nz.invalid> wrote:

Quite impressed to discover that a sixel graphics renaissance seems to
be in progress <https://www.arewesixelyet.com/>.

...

Certainly a bit nicer than blocky character graphics.

I've seen the Unicode Braille codepoints used, too. Those support 2
dot wide and 8 dot Braille symbols, which render with white space
surrounding.

What use is it? Think of remote access via SSH, where you have a need
for some basic ability to view graphics in your terminal emulator. The
above site gives a roll call of terminal emulators, and their status
of support (or not) for sixel graphics. Is yours in the list?

My xterm is new enough, but I don't seem to get output. The HI example
on the Wikipedia page just outputs a blank line and img2sixel gives no
visible output.

But a related project: fifteenel. It is a font using a Unicode private
block for a fifteen pixel tall by one pixel wide drawing scheme.

https://drj11.itch.io/fifteenel-font

Elijah
------
not sure if his xterm config is the source of problems or something else
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

Eli the Bearded <*@eli.users.panix.com> wrote:

My xterm is new enough, but I don't seem to get output. The HI example
on the Wikipedia page just outputs a blank line and img2sixel gives no visible output.

You added at least

------------------------------------------------------------------------ XTerm*decTerminalID: vt340
XTerm*numColorRegisters: 256 ------------------------------------------------------------------------

to '~/.Xresources' and 'xrdb ~/.Xresources'-ed those definitions?
--
3. Hitchhiker 11: (65) On the way back they sang a number of tuneful and reflective songs on the subjects of peace, justice, morality, culture,
sport, family life and the obliteration of all other life forms.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

Eli the Bearded <*@eli.users.panix.com> wrote:

I've seen the Unicode Braille codepoints used, too. Those support 2
dot wide and 8 dot Braille symbols, which render with white space surrounding.

Nice to have: <https://codeberg.org/grunfink/pbm2braille>

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But Braille chars and their char and line spacing may look very
different depending on the font you use. In my XTerms they are as wide
as other chars, in my GUI-Emacs they are narrower and in my main browser
they are wider than the monospace font's spacing. For its original use
case that won't hurt, but as pseudographicks that may be painful. Maybe instead of adding every shit and their pets to Unicode raosomeonerao should solve that problem.
-- roCru|riCraCraCroCru|riCraCraCroCru|riCraCraCraCraCraCraCraCraCraCraCrunrunrunrunrunrunrunrunrunraCraCraCraCraCraCraCraCraCraCraCroCru|riCraCraCroCru|riCraCraCroCru|riC
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--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

Ben Collver <bencollver@tilde.pink> wrote at 13:50 this Wednesday (GMT):

On 2025-09-17, Lawrence DrCOOliveiro <ldo@nz.invalid> wrote:

Quite impressed to discover that a sixel graphics renaissance seems to
be in progress <https://www.arewesixelyet.com/>.

That web site gives a list of terminal emulators that support sixel
graphics. I'd be interested in seeing a list of software that
supports sixel graphics. Off the top of my head, i've used:

* gnuplot
https://sourceforge.net/p/gnuplot/patches/742/
* chafa
https://hpjansson.org/chafa/

I have also used gnuplot with xterm's Tektronix 4014 emulation.

https://en.wikipedia.org/wiki/Tektronix_4010

chafa is a incredible program that I use a lot! I like how it can
automatically detect and use the highest graphics mode for the
program.
--
user <candycane> is generated from /dev/urandom
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

In comp.misc, yeti <yeti@tilde.institute> wrote:

Eli the Bearded <*@eli.users.panix.com> wrote:

I've seen the Unicode Braille codepoints used, too. Those support 2
dot wide and 8 dot Braille symbols, which render with white space surrounding.

Nice to have: <https://codeberg.org/grunfink/pbm2braille>

https://github.com/Eli-the-Bearded/DotDotDot/tree/pbmtodots/pbmtodots

(I just forked someone else's work and added the pbm tool to it.)

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ra#ro+ru+ri+ra+ra+ru+ru+ru+ru+ru+ru+ru+ru+ri+raeraeraUruaruiroaraCraCraera+raaraCraCraCraeraUraCraCraCraCri+ru+riero+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ri+ra+ra+racri2ra+rafraUraCraC
raCraEraUraCraCraCraeri+ru+ru+ru+ru+ru+ru+ru+ru|ruariCru+ru+ru+ruoriCraCraCraCraCraCraCraCraCraCriiruuroCru?ru>runru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ru+ruNraCraCraCra+raUraCraCraCraCraC
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Nice, but it was missing something.

But Braille chars and their char and line spacing may look very
different depending on the font you use. In my XTerms they are as wide
as other chars, in my GUI-Emacs they are narrower and in my main browser
they are wider than the monospace font's spacing. For its original use
case that won't hurt, but as pseudographicks that may be painful. Maybe instead of adding every shit and their pets to Unicode raosomeonerao should solve that problem.

The Legacy Computing block art looks promising:

https://en.wikipedia.org/wiki/Symbols_for_Legacy_Computing

Elijah
------
was not going to link to his program but the idea was so similar
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

In comp.misc, yeti <yeti@tilde.institute> wrote:

Eli the Bearded <*@eli.users.panix.com> wrote:

My xterm is new enough, but I don't seem to get output. The HI example
on the Wikipedia page just outputs a blank line and img2sixel gives no
visible output.

You added at least
XTerm*decTerminalID: vt340

Hmmm. Nope. Didn't try that.

With that the HI example from Wikipedia works but img2sixel still gives
no visible output. (I tried adding -o outfile and I can see sixel code
there in vi.)

Elijah
------
ppmtosixel dumps visible sixel code to terminal
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

On Fri, 19 Sep 2025 04:30:03 -0000 (UTC), Eli the Bearded wrote:

In comp.misc, yeti <yeti@tilde.institute> wrote:

XTerm*decTerminalID: vt340

With that the HI example from Wikipedia works but img2sixel still gives
no visible output. (I tried adding -o outfile and I can see sixel code
there in vi.)

Something about 7-bit versus 8-bit encoding, at a wild guess?
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc


Lots of stuff on VMS supported sixel. We used a matrix manipulation program called MatrixX which would generate plot files which you could RENDER into different formats including postscript to print and sixel to display on your VT240. I think IslandWrite/Draw/Paint also supported sixel display terminals. --scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

On Fri, 19 Sep 2025 22:43:31 -0400 (EDT), Scott Dorsey wrote:

Lots of stuff on VMS supported sixel. We used a matrix manipulation
program called MatrixX which would generate plot files which you
could RENDER into different formats including postscript to print
and sixel to display on your VT240.

Why did you bother with sixel graphics on a VT240? That supported
ReGIS, which was far superior.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: comp.misc

Lawrence =?iso-8859-13?q?D=FFOliveiro?= <ldo@nz.invalid> wrote:

On Fri, 19 Sep 2025 22:43:31 -0400 (EDT), Scott Dorsey wrote:

Lots of stuff on VMS supported sixel. We used a matrix manipulation
program called MatrixX which would generate plot files which you
could RENDER into different formats including postscript to print
and sixel to display on your VT240.

Why did you bother with sixel graphics on a VT240? That supported
ReGIS, which was far superior.

Because that's what the software we had used!
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
--- Synchronet 3.21a-Linux NewsLink 1.2