XML Considered Harmful

[Chris Angelico]

On Sun, Sep 26, 2021 at 9:09 AM Eli the Bearded <*@eli.users.panix.com> wrote:
>
> In comp.lang.python, Chris Angelico  <rosuav at gmail.com> wrote:
> > Eli the Bearded <*@eli.users.panix.com> wrote:
> >> I'd use one of the netpbm formats instead of JPEG. PBM for one bit
> >> bitmaps, PGM for one channel (typically grayscale), PPM for three
> >> channel RGB, and PAM for anything else (two channel gray plus alpha,
> >> CMYK, RGBA, HSV, YCbCr, and more exotic formats). JPEG is tricky to
> >> map to CSV since it is a three channel format (YCbCr), where the
> >> channels are typically not at the same resolution. Usually Y is full
> >> size and the Cb and Cr channels are one quarter size ("4:2:0 chroma
> >> subsampling"). The unequal size of the channels does not lend itself
> >> to CSV, but I can't say it's impossible.
> > Examine prior art, and I truly do mean art, from Matt Parker:
> > https://www.youtube.com/watch?v=UBX2QQHlQ_I
>
> His spreadsheet is a PPM file, not a JPEG. You can tell because all of
> the cells are the same size.
>
> He also ignores vector graphics when considering digital images. Often
> they are rendered in what he calls "spreadsheets" but not always. I have
> a Vectrex, for example.
>
> Elijah
> ------
> then there's typewriter art with non-square "pixels"

Ah, I remember playing around with line printer art. We mostly had
Epsons and IBMs that did have some measure of graphical capabilities,
but it was WAY faster to print text, so we sometimes did things the
hacky and elegant way instead.

ChrisA