Re: bitmaps in groff documents

[Douglas McIlroy]

>> Does anyone have a recipe for including a bitmap image in a groff
>> document? I wish to assure that on a raster-printing device the bitmap
>> is appropriately aligned with that of the device.

> There is a PSPIC macro which is part of the MM macros (groff_mm) which I
> use to pull in a picture.

I use PSPIC regularly.  It is capable of scaling images, but this is
not the same as aligning bitmaps. I  would like to assure that a
1000x1000 bitmap, say, occupies exactly 1000x1000 pixels on the
display, regardless of the physical size of a pixel. A misaligned
bitmap produces unwanted artifacts such as. Moiré patterns.

Of course, on a very high resolution device 1000x1000 pixels may be an
extreme eye test, but I can deal with that if necessary.

Doug

On Fri, Jun 2, 2023 at 10:34 AM Damian McGuckin <damianm@esi.com.au> wrote:
>
>
> hi Doug,
>
> On Fri, 2 Jun 2023, Douglas McIlroy wrote:
>
> > Does anyone have a recipe for including a bitmap image in a groff
> > document? I wish to assure that on a raster-printing device the bitmap
> > is appropriately aligned with that of the device.
>
> There is a PSPIC macro which is part of the MM macros (groff_mm) which I
> use to pull in a picture.
>
> Thanks - Damian