Re: How to get jpeg output

[Ethan M. <merritt@u.washington.edu>]

On Tuesday 07 November 2006 02:16 am, Aniska wrote:
> Sorry to bother you again, but.
>
> I install libgd and etc..
>
> Now I should build gnuplot from source, but I dont know what the name
> of the source file is ?
> and where it is ?

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>
> I have Linux / FC5
>
>
> - Anthony
>
> Ethan Merritt wrote:
> > On Monday 06 November 2006 12:14 am, Aniska wrote:
> >> Hello.
> >>
> >> I just check my drivers and i have also old version:
> >> -READLINE  +LIBREADLINE  +HISTORY  -LIBGD  +PNG
> >>
> >> Can you tell me Where I find that libgd and what i must do so
> >> that works ?
> >
> > You can download and build from source via the libgd home page:
> > 	http://www.boutell.com/gd/
> >
> > If you are running linux, then there is almost certainly a libgd
> > package for your distro.  You will need the "devel" package as
> > well as the library itself.  For Mandriva, these would have names
> > like
> >  libgd2-2.0.33-3.1.20060mdk
> >  libgd2-devel-2.0.33-3.1.20060mdk
> >
> > Your package management system may tell you that libgd itself
> > requires other libraries (libfreetype, libpng, ...) that you
> > may need to install first.
> >
> > Once libgd is installed, you can build gnuplot from source by
> > typing
> > 	./configure
> > 	make
> >
> >
> > 			EAM
> >
> >> Best regards,
> >>
> >> Anthony
> >>
> >> Ethan Merritt wrote:
> >> > On Wednesday 01 November 2006 12:05 pm, Nibbler wrote:
> >> >> Hi,
> >> >>
> >> >> I would like to have output file which is jpeg. Now im using
> >> >> png and it is working just fine.
> >> >> Is it possible to get jpeg output ?
> >> >
> >> > Yes.
> >> >
> >> >> I try like this:
> >> >>
> >> >> set terminal jpg small
> >> >
> >> > But that command seems to indicate that you are using a very old
> >> > png driver, rather than the consolidated gif/png/jpeg driver
> >> > based on libgd.
> >> >
> >> >> my gnuplot version is 4.0
> >> >
> >> > That's fine.  But the more important issue is what version of
> >> > the png/jpeg driver are you using.  Type  "show version long" at
> >> > the gnuplot prompt and look for the following flags:
> >> >
> >> > +GD_PNG  +GD_JPEG  +GD_TTF
> >> >
> >> > If you don't see them, you will need to install libgd and
> >> > rebuild gnuplot to use it.
> >> >
> >> > Having said all that, please note the JPEG is not usually a
> >> > good format for gnuplot output.  PNG works much better.
> >> > But the libgd-based PNG/JPEG driver will give you much better
> >> > PNG output as well as the option to use JPEG.
> >
> > --
> > Ethan A Merritt
> > Biomolecular Structure Center
> > University of Washington, Seattle WA
> >
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-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle WA