[Plplot-general] Should line width thinner than 1.0 be supported?

[Hǎiliàng W. <hwa...@gm...>]

Hello,

I'm plotting a small PDF graph (128x96) with cairopdf driver, and the
line width looks too thick with line width 1.

To solve the problem, I modify the code within the cairo driver
(cairo.c) to set the the line width to 0.2 directly, and the result
looks pretty good.

I have read the thread below so I know there is no plan to change
function plwid's parameter from int to float:
http://www.mail-archive.com/plp...@li.../msg00429.html

I'm wondering if it is good idea to add another function to set the
line width with a ratio, e.g. void plwidr(double)? So that the real
line width becomes a product: linewidth*ratio. By default the ratio is
1.0 so it will not affect the current user, but if the user want finer
line width, just set linewidth=1 and the ratio any floating point
value they want.

Hailiang