Re: using gnuplot 4.2

[Ares]

2007/7/27, LUK ShunTim <address@hidden>:
> Ares wrote:
> > 2007/7/27, LUK ShunTim <address@hidden>:
> >> Ares wrote:
> >>> Hi all,
> >>>
> >>> I am a new (happy) GNU/Linux user. I have kubuntu 7.04 installed with 
> >>> octave 2.9
> >>>
> >>> by default kubuntu package manager installs gnuplot version 4.0. now I
> >>> found on octave help that octave can use gnuplot 4.2 to show images
> >>> and plot data on top of such images (that is what I need) using
> >>> gnuplot.
> >>>
> >>> My problem is: how can I tell octave to use gnuplot 4.2 instead of 4.0?
> >>>
> >>> I tried removing gnuplot 4.0 but (of course) octave does not find
> >>> gnuplot anymore.
> >>>
> >>> thanks in advance for your help. Regards
> >>>
> >> Did you install gnuplot 4.2 via a deb package? If it's the case, the
> >> easiest way is probably the debian alternatives mechanism. Try "man
> >> update-alternatives" to see how to do it or install galternatives for a
> >> GUI to do the same.
> >>
> >> For standalone install, you can try setting the binary search path so
> >> that octave finds gnuplot 4.2 first. You may have to copy/rename the
> >> binary to gnuplot if it's called gnuplot-4.2 or something.
> >>
> >> For bash,
> >>
> >> export PATH=/path/to/your/gnuplot/binary/dir:$PATH
> >>
> >> Regards,
> >> ST
> >> --
> >>
> >>
> >
> > as I said I am quite new to Linux, so I do not really understand all
> > you are saying...
> >
> > anyway, I searched for gnuplot bin files and there are two of them,
> > /usr/bin/gnuplot and /usr/local/bin/gnuplot, the first corresponds to
> > gnuplot 4.0 and the second to 4.2. If I simply type gnuplot, it opens
> > gnuplot 4.2, so this should already be prior to 4.0 (and octave should
> > use this instead?)
>
> In this case, gnuplot 4.2 should be found first. I don't think octave
> hard-coded the path. Perhaps more knowledgeable users can confirm.
>
> Just to be sure, what does "echo $PATH" show? Is /usr/local/bin in front
> of /usr/bin?

yes it is.


>
> >
> > I also tried galternatives (don't have time to do it by command line!)
> > and gnuplot is not there at all!
>
> I guess your gnuplot 4.2 is not installed via dpkg or apt.
>

no, I downloaded the package and installed it "by hand"...

> >
> > I think that the problem is "how to tell octave to use 4.2 version of
> > gnuplot"? and also, how to tell which version of gnuplot octave is
> > using? and is it true that octave is supposed to call gnuplot 4.2 to
> > show images (and plot on top of them)?
> >
> > If I use imshow, octave keeps on using image magick...
>
> Because somehow octave failed to find gnuplot 4.2 and hence it tries
> other viewers. See "help imshow".
>

unfortunately help imshow doesn't tell me anything about the viewer
used by imshow...

> >
> > Regards,
>
> Regards,
> ST
> --
>
>
>


-- 
Diego
http://www.ares001.altervista.org/