SGPLOT line thickness misbehaving with higher resolution svg files.

dmauger — Thu, 04 Jun 2026 14:54:20 GMT

edit: apologies. first time user not aware there is a separate graphics forum. if mods can move, please do.

The following 2 pieces of code produce very different graphs even though the line thickness is 1.9px in the first and 2.0px in the second. It doesn't matter whether I use pt or px as the units (it just breaks at a different point).

If i create a png image instead of svg, it behaves exactly as expected. If I leave out the image_dpi option it behaves as expected. Using a lower dpi reduces the problem while higher dpi makes the problem even worse.

I require an svg file with at least 600dpi and I’d like to get an image with a line thickness somewhere between ultra-fine and pre-school crayola.

CODE 1:

ods html close;
ods html5 options(svg_mode="embed") image_dpi=600;
ods graphics /imagefmt=svg;
proc sgplot data=_plot noautolegend;
step x=time y=Survival / group=Stratum lineattrs=(thickness=1.9px);
scatter x=time y=Censored / group=Stratum markerattrs=(symbol=plus size=8);
run;
ods html5 close;
ods html;

CODE2:

ods html close;
ods html5 options(svg_mode="embed") image_dpi=600;
ods graphics /imagefmt=svg;
proc sgplot data=_plot noautolegend;
step x=time y=Survival / group=Stratum lineattrs=(thickness=2px);
scatter x=time y=Censored / group=Stratum markerattrs=(symbol=plus size=8);
run;
ods html5 close;
ods html;

Re: SGPLOT line thickness misbehaving with higher resolution svg files.

sbxkoenk — Fri, 05 Jun 2026 13:27:40 GMT

I see you still use imagefmt=.
It's called outputfmt= nowadays. (The OUTPUTFMT= option was previously named the IMAGEFMT= option.)

I can confirm the problem with line thickness gets worse as the DPI (image_dpi=) increases, but I don't know why.

I usually use image_dpi=600 myself.

What if you use another ODS destination?
You can use OUTPUTFMT=SVG with

ODS HTML
ODS HTML5
ODS Powerpoint
ODS EXCEL
ODS WORD

What if you use another vector-based format?
Like

OUTPUTFMT=PDF (portable document format) OR
OUTPUTFMT=EPSI (Adobe encapsulated PostScript interchange)

BR, Koen

topic Re: SGPLOT line thickness misbehaving with higher resolution svg files. in Graphics Programming

SGPLOT line thickness misbehaving with higher resolution svg files.

Re: SGPLOT line thickness misbehaving with higher resolution svg files.