[metapost] How to use a thinner pen?
rodolfo.medina at gmail.com
Fri Jun 20 00:29:23 CEST 2008
Rodolfo Medina wrote:
>> It seems that I don't manage to use a pen thinner than the default 0.5bp.
>> When I give the command: `pickup pencircle scaled 0.1bp', or even `pickup
>> pencircle scaled 0.0000001bp', my eye can't notice any difference with the
>> default thickness. Instead, a bigger thickness works fine. What am I
"Troy Henderson" <thenders at gmail.com> writes:
> It's very likely your viewer. That is, GV (and others) eventually
> rasterize images as a last step to displaying them on the screen. As
> such, they probably have a minimum stroke width that is allowed and
> anything smaller than that gets rounded up to this minimum amount.
> I'm seeing something like this in Acroread. As I zoom in, the size of
> the stroke doesn't change but of course the rest of the graphic does
> (magnifies). So, the relative sizes is changed meaning that the small
> stroke is more accurate when magnified.
If I convert the ps file into pdf format with ps2pdf, then if I magnify the
picture by the 400% I can view the thinner line, and also I can view it if I
print the picture on a paper. This seems to confirm that the problem is due
to gv. Within gv, when I try to magnify the picture beyond a certain level, I
get error messages.
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