gnuplot-py-users Mailing List for Gnuplot.py

Thank you vermy much!

Works like a charm!

Daniel

Am Sonntag, 18. Juni 2006 21:48 schrieb par...@sp...:
> > i just wanted to know if it is possible to move the description text
> > within the graph (with the line before it) from the right upper corner to
> > the left upper corner?
>
> Try this:
>
> g=Gnuplot.Gnuplot()
> g.("set key left top")
>
> The "not-so Frequently Asked Questions" page is very helpful:
>
> http://t16web.lanl.gov/Kawano/gnuplot/legend-e.html#2.2
>
> John
>
>
>
>
> _______________________________________________
> Gnuplot-py-users mailing list
> Gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-py-users

> i just wanted to know if it is possible to move the description text within 
> the graph (with the line before it) from the right upper corner to the left 
> upper corner?

Try this:

g=Gnuplot.Gnuplot()
g.("set key left top")

The "not-so Frequently Asked Questions" page is very helpful:

http://t16web.lanl.gov/Kawano/gnuplot/legend-e.html#2.2

John

Hi,

i just wanted to know if it is possible to move the description text within 
the graph (with the line before it) from the right upper corner to the left 
upper corner?

Thank you,

Daniel

Hello,

I have created a new mailing list:

    gnu...@li...

This mailing list will automatically receive a message every time that
somebody commits something to the Gnuplot.py Subversion repository.
People who are interested in following the development of Gnuplot.py
should subscribe to the new mailing list by visiting the following web page:

    https://lists.sourceforge.net/lists/listinfo/gnuplot-py-svn

Please continue to use the gnuplot-py-users mailing list for discussions.

Michael

John Parejko wrote:
> I've been having trouble using multiple replot commands, ie:
> 
> g.plot(Gnuplot.Data(dataset[0]))
> for i in xrange(1,len(dataset)):
>     g.replot(Gnuplot.Data(dataset[i]))
> 
> After about the 40th row in dataset, I start getting errors like this:
> 
> gnuplot> 1961992.5 0.0 2.47496008873
>          ^
>          line 31995: invalid command
> 
> gnuplot> e

It doesn't make sense to use replot() for this, because after each call
to replot() the plot is re-drawn (first with 1 dataset, then 2, then 3,
etc.)  The total work goes like len(dataset)**2.

Something like

    g.plot(*[Gnuplot.Data(d) for d in dataset])

should do the whole thing in one shot.

I don't know if the extreme inefficiency is the cause for the failure,
but it certainly can't help.

> (if inline == 1) and sometimes about bad filenames (seems to be system
> dependent) if inline = 0.  Eventually the plot seems to come out
> correctly, but I can't verify that all the rows are actually being
> plotted.  Is this a bug, or am I going about this all wrong?  I want to
> overlay a bunch (~100) of different lines on the same plot, and then
> possibly an averaged line in dark black on top of that.
> 
> I can put sample code and plots up somewhere for reference...

If it is appropriate to your application, it is also possible to combine
multiple curves into a single file by separating them with blank lines.
 (The blank line basically says "lift the pen before plotting the next
point").

There are typically operating system limits on the number of files that
may be open at once, which could also cause problems.  There might also
be limits on the number of named pipes; I'm not sure.

Michael

Michael Haggerty wrote:
> Is there anybody out there who can program in Python and would be
> interested in taking over the maintenance of Gnuplot.py?

I am happy to announce that John Parejko has volunteered to work on the
Gnuplot.py project.  I've just granted him developer privileges at
SourceForge.  I hope he can give the project some of the care and
attention that it has been missing for a long time!

That is not, of course, to say that other volunteers are not welcome :-)
 And everybody is encouraged to chip in, not only with writing code, but
also with updating documentation, answering questions on the mailing
list, testing, etc, etc...

Welcome John!
Michael

Hi gnuplot.py-users

I'm developing a small Python program which creates a gnuplot command 
stack out of large time-based scientific 1D and 2D datasets. Every 
gnuplot command on the stack represents a frame of an animation and you 
have some player-like Tk-controls to start/stop the animation and step 
through it. When you press "play" a slider moves from left to right on 
tick (after a adjustable delay) for every frame and triggers gnuplot.py 
to render the data.
Although gnuplot is quite fast with rendering, sometimes the amount of 
point-data for a single frame is too huge and rendering takes longer 
than the given delay between to frames. Result: the slider moves faster 
than gnuplot can render - and this is ugly...
So my question is: is there any callback mechanism implemented in 
gnuplot.py which is fired every time gnuplot is done with rendering? If 
not, would it be easy to implement it or do you have any other ideas 
that could solve my problem?

Thanks & Regards,

Ole

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Ole Christian Weidner
Max-Planck-Institute for Gravitational Physics
eScience Group

Am Mühlenberg 1
D-14476 Potsdam, Germany
email: ole...@ae...
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Hi Daniel,

I think it's impossible to create monochrome png images just by adding 
the "monochrome" option, because the "png"-terminal does not support it, 
unlike the "postscript"-terminal. It's not gnuplot.py's fault ;-)

gnuplot> help set terminal postscript
 Several options may be set in the `postscript` driver.

 Syntax:
       set terminal postscript {<mode>} {enhanced | noenhanced}
                               {color | colour | monochrome}
                               {blacktext | colortext | colourtext}
                               {solid | dashed} {dashlength | dl <DL>}
                               {linewidth | lw <LW>}
                               {<duplexing>}
                               {rounded | butt}
                               {fontfile [add | delete] "<filename>"}
                               {palfuncparam <samples>{,<maxdeviation>}}
                               {"<fontname>"} {<fontsize>}

gnuplot> help set terminal png
 Syntax:
       set terminal png
              {{no}transparent} {{no}interlace}
              {tiny | small | medium | large | giant}
              {font <face> {<pointsize>}}
              {size <x>,<y>} {{no}crop}
              {{no}enhanced}
              {<color0> <color1> <color2> ...}

The only way to create a monochrome png is to define your own monochrome 
palette with the png-terminal's color options. Here's an example from 
the gnuplot help:

       set terminal png medium size 640,480 \
                        xffffff x000000 x404040 \
                        xff0000 xffa500 x66cdaa xcdb5cd \
                        xadd8e6 x0000ff xdda0dd x9500d3    # defaults

 which uses white for the non-transparent background, black for borders, 
gray
 for the axes, and red, orange, medium aquamarine, thistle 3, light 
blue, blue,
 plum and dark violet for eight plotting colors.

Cheers,

Ole


da...@we... wrote:
> Hi,
>
> I am running gnuplot 4.0 and it seems to be imposible to create an monochrome 
> png:
> this line:
>
> g.hardcopy("somename.png", terminal='png', monochrome= 1)
>
> gives me:
>
> gnuplot> set terminal png monochrome
>                           ^
>          line 0: invalid color spec, must be xRRGGBB
>
> Furthermore I would like to know how I can move the description line (the 
> title) for a plot like this:
> g.plot(Gnuplot.Data(tmp1, title = "C^1_{t}", with="lines"))
>
> this:
> g.plot(Gnuplot.Data(tmp1, title = "C^1_{t}", with="lines", offset = (1,1))
> does not work for me.
>
> Thank you very much,
>
> Daniel
>
>
> _______________________________________________
> Gnuplot-py-users mailing list
> Gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-py-users
>
>   

Hi,

I am running gnuplot 4.0 and it seems to be imposible to create an monochro=
me=20
png:
this line:

g.hardcopy("somename.png", terminal=3D'png', monochrome=3D 1)

gives me:

gnuplot> set terminal png monochrome
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ^
=A0 =A0 =A0 =A0 =A0line 0: invalid color spec, must be xRRGGBB

=46urthermore I would like to know how I can move the description line (the=
=20
title) for a plot like this:
g.plot(Gnuplot.Data(tmp1, title =3D "C^1_{t}", with=3D"lines"))

this:
g.plot(Gnuplot.Data(tmp1, title =3D "C^1_{t}", with=3D"lines", offset =3D (=
1,1))
does not work for me.

Thank you very much,

Daniel