pdfcairo term and line aliasing?

[gnutron]

Below is a script file. Gnuplot makes lines that look bad (not anti-aliased or something?), see attached pdf. Is there a way I could improve upon this? Using version 5.0.4. Thanks!

reset
set terminal pdfcairo enhanced font "Garamond,8" fontscale 1.0 size 11in,8.5in 
set output 'graph.pdf' 

xo=0.846455; #1.125
r1=7.25;
r2=9.5;
r3=12;
r4=14;

set samples 1000
set size ratio -1
set xrange [-xo:xo]
set yrange [0:0.1]
set key box at -0.3,-0.3
set tics out
set xlabel "Fretboard width (in), graph view is for 43 mm nut"
set ylabel "Height (in)"

set style line 1 lt 1 dt 1 lw 0.2 lc 'red'  
set style line 2 lt 1 dt 1 lw 0.2 lc 'blue'
set style line 3 lt 1 dt 1 lw 0.2 lc 'purple'
set style line 4 lt 1 dt 1 lw 0.2 lc 'black'

plot\
-sqrt(r1**2-xo**2)+sqrt(r1**2-x**2) ls 1 t '7.25"',\
-sqrt(r2**2-xo**2)+sqrt(r2**2-x**2) ls 2 t '9.5"',\
-sqrt(r3**2-xo**2)+sqrt(r3**2-x**2) ls 3 t '12"',\
-sqrt(r4**2-xo**2)+sqrt(r4**2-x**2) ls 4 t '14"'

reset
set term wxt
set out

[Ethan Merritt]

The lines in your graph look perfect when viewed here. I suspect whatever problem you are seeing lies in your pdf viewer rather than the graph.pdf file.

[gnutron]

Looks like you're right. If anybody has any ideas about how to make things not look janky on Adobe Acrobat DC or Adobe AcrobatReader DC, let me know. Played with some of the Edit/Preferences/Page Display Rendering options and got nowhere...