Thank you all for your help.
First i tried the grph-downsample.lua script.
Unfortunately i get an error message
grph-downsample.lua:31: bad argument #2 to 'format' (number has no integer representation)
See attached log file.
Greetings Lutz
Am 14. Februar 2019 21:44:31 MEZ schrieb Hans Hagen
On 2/14/2019 9:32 PM, Peter Münster wrote:
On Thu, Feb 14 2019, Lutz Haseloff wrote:
I wanted to use the degrade module with recent ConTeXt and LuaTeX.
Hi Lutz,
Could you please check, if the module grph-downsample.lua could fit your needs?
The minimal example from the degrade manual gives an error. See the attached log. Is there any chance to get the module working again?
There is always a chance. The question is just: who will afford the efforts... Please check first the downsample module, and then let's see, if you still need this very old and hackish degrade module. you can plug in code
\startluacode
figures.converters["png"]["lowres.png"] = function(oldname,newname,resolution) os.execute(string.format('gm convert "%s" "%s"',oldname,newname)) end
figures.converters["jpg"]["lowres.jpg"] = function(oldname,newname,resolution) os.execute(string.format('gm convert "%s" "%s"',oldname,newname)) end
-- figures.suffixes["lowres.png"] = figures.suffixes.png -- suffix is automatically done
\stopluacode \enabletrackers[graphics*]
\starttext \externalfigure[t:/sources/mill.png][conversion=lowres.png] \externalfigure[t:/sources/hacker.jpg][conversion=lowres.jpg] \stoptext
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