Improve the resolution of jpeg or eps plots

[sukanto]

How can I improve the quality of the jpeg / eps outputs (i.e. how to
produce high resolution output images) ?

Currently I use the following command:
set terminal jpeg enhanced

This produces a 640x480 pixels jpeg output.

Thanks and Regards,
Sukanto

[Pete Gregory]

sukanto wrote:
> How can I improve the quality of the jpeg / eps outputs (i.e. how to
> produce high resolution output images) ?
>
> Currently I use the following command:
> set terminal jpeg enhanced
>
> This produces a 640x480 pixels jpeg output.
>

gnuplot> help set terminal jpeg

Syntax:
set terminal jpeg
{{no}interlace}
{tiny | small | medium | large | giant}
{font <face> {<pointsize>}}
{size <x>,<y>} {{no}crop}
{{no}enhanced}
{<color0> <color1> <color2> ...}
[etc]
HTH

[sfeam]

sukanto wrote:

> How can I improve the quality of the jpeg / eps outputs (i.e. how to
> produce high resolution output images) ?

If you want high resolution, you definitely should not be using jpeg.
jpeg is by design a "lossy" format. The most straightforward thing
for you to do is to issue the identical commands in gnuplot, but
select
set term png enhanced
instead. The png and jpeg output uses exactly the same driver, but png
is a loss-less format. If you want more pixels of information, you
can specify a size:
set term png enhanced size 1280,1024

Eps is a wholly different matter. It is a vector language, and hence
the resolution is limited only by the viewer or print device.

[sukanto]

Thanks Pete and sfeam. It worked.