On 29-6-2011 5:01, Cecil Westerhof wrote:
2011/6/29 Martin Schröder<mar...@oneiros.de>
I do not use graphics a lot in my ConTeXt files. But some time ago I used
several pictures with a very high resolution. This made the resulting PDF
very big. I did not expect the PDF printed on a printer with a higher
resolution as 1200 DPI. Is there a way to have the included graphics not
be
bigger as necessary (without changing the original pictures)?
Use a program for image manipulation, e.g. ImageMagick.
That would be a possibility, but I was wondering if there was a way to let
ConTeXt do it. Saves a lot of time. Also: when changing from A4 to A5, you
have to do it all over again.
You can plugin in a converter. However, it only works for one to anothe
format so you need to patch a line in grph-inc.lua:
line 416: local converter = (newformat ~= format or resolution) and
converters[format]
(I'll figure out something better for this so it's a temp hack.)
Such a plugin looks like:
\startluacode
figures.converters.png = {
png = function(oldname,newname,resolution)
local command = string.format('gm convert -depth 1 "%s"
"%s"',oldname,newname)
logs.report(string.format("running command %s",command))
os.execute(command)
end
}
\stopluacode
\externalfigure[mill.png][resolution=lowres,conversion=png]
Hans
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