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From: sfeam <sfeam@users.sourceforge.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: Aligning Graphs, accurancy problems
Followup-To: comp.graphics.apps.gnuplot
Date: Tue, 03 Apr 2012 10:39:25 -0700
Organization: gnuplot development team
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T4b wrote:

> On 3 Apr., 17:17, sfeam <sf...@users.sourceforge.net> wrote:
>> T4b wrote:
>> > On 2 Apr., 23:46, sfeam <sf...@users.sourceforge.net> wrote:
>> >> T4b wrote:
>> >> > I'm using gnuplot (version 4.4.4 because it's in the ubuntu repos
>> >> > and I couldn't get the newer one to compile) to generate a sun dial
>> >> > and then export it to dxf.
>> >> > In principle that works, but I have several things which I want to
>> >> > improve:
>> >> > -I can't align the graphs properly, I got them to align more or
>> >> > less right but when looking at the dxf file very closely the origin
>> >> > of the graphs are still a little off. How do I get all 30 graphs to
>> >> > have exactly the same origin?
>>
>> >> set lmargin at screen <fraction>
>> >> set rmaring at screen <fraction>
>> >> etc
>>
>> >> See
>> >>http://gnuplot.sourceforge.net/demo_4.4/margins.html
>>
>> > This doesn't seem to work. Maybe I'm just too stupid for it.
>> > I added
>> > set lmargin at screen 0.0
>> > set rmargin at screen 1.0
>> > set bmargin at screen 0.0
>> > set tmargin at screen 1.0
>> > at the beginning of the script because I want to use the entire
>> > canvas.
>> > Then I changed the range of one of the plots (I changed the line "plot
>> > [-50:50] [-50:50] for [stunde=von:bis] -x/tan(z(stunde)) with
>> > lines linetype -1" to "plot [-50:50] [-50:0] for [stunde=von:bis] -x/
>> > tan(z(stunde)) with
>> > lines linetype -1") and the graph was moved so it fits better onto the
>> > canvas.
>>
>> > As I understand *margin, it just sets the borders of the graphs; what
>> > I want is to fix the origin of all graphs to the same point on the
>> > canvas.
>>
>> Then I must not understand the question.
>> What do you mean by "origin" if not the lower left-hand border of the
>> graph?
>>
>> Are you saying that you want the point [0,0] to appear in the same place
>> even though the graphs have different range and scale, and that place is
>> not on the border of the graph? I can't think of a way to do that.
> 
> With origin I mean the point [0,0], yes. The scale of all graphs is
> supposed to be the same. [0,0] should be in the middle of the top
> border of the canvas.

Sorry, I can't think of a way to do that automatically.

> http://ubuntuone.com/0edmLjKcBKBOsOnyWMXpSa
> On this picture I added a red dot where the origin is at the moment to
> make this completely clear and I added a box around the area which I
> would like to display.
> 
> And I remembdered something else which I wanted to ask: how do I get
> rid of the text?

Either turn off the plot legend ("key") altogether using the command
    unset key
or append "notitle" to the individual plot commands.