Re: bug in wx terminal for linewidth 0

[Petr M. <mi...@ph...>]

> > It seems that WXT is incorrectly setting the linewidth 0 to be really a zero 
> > thickness, instead of the smallest linewidth achievable (as all other 
> > terminals are doing).
> >
> > Compare:
> >
> > plot sin(x) w l lw 0, cos(x) w l lw 1
> > set term wxt; replot
> > set term png size 900,700; set out 'a.png'; replot
> > set term post color; set out 'a.ps'; replot
> > set term fig color; set out 'a.fig'; replot
> 
> I don't know what's the proper answer to this, but from "help linestyle" 
> I can read:
> "The line width and point size are multipliers for the default width and 
> size"
> And the smallest achievable linewidth for cairo-based terminals is 
> definetely zero. It is a consequence of antialiasing. For example, try:
> 
> plot x-2 lw 3 lt 1, x-1 lw 2 lt 1, x lw 1 lt 1, x+1 lw .8 lt 1, x+2 lw 
> .5 lt 1, x+3 lw .3 lt 1, x+4 lw .1 lt 1, x+5 lw .03 lt 1
> 
> You will probably see that even at lw 0.03 the line is visible and looks 
> indeed very thin.

All these lines below lw 1 have thickness 1 pixel, but they are lighter 
(I had a look by "kmag"). 

> Do you think we should decided of a lower bound on the linewidth for 
> cairo-based terminals ?

I think the limit should be "lw 1" -- thus, all linewidths < 1 should be 
equivalent to linewidth 1. I seems that all terminals work this way.

---
PM