Fwd: Re: [libreoffice-users] To make a graph

Hi :)
Dohh, I sent this as a pm rather than to the whole list.  So I've had to
forward it.

I still don't understand why we want to push people's replies off-list.
Off-list means the replies are not subject to peer review and makes it
difficult to know whether a question has been resolved or not and it's
impossible to look back over old solutions that may still work.

Hey ho, grumble done ;)
Regards from a
Tom :)
---------- Forwarded message ----------
From: "Tom Davies" <tomcecf@gmail.com>
Date: 29 Aug 2017 02:31
Subject: Re: [libreoffice-users] To make a graph
To: "Regina Henschel" <rb.henschel@t-online.de>
Cc:

Hi :)
> As Regina and Brian say there is something crucial missing.
>
> I think "time" might be missing.  If U started as 1.37 and ended at 1.31
> then those are likely to be hights along the vertical y-axis.  Lets say
> time = 1t.
>
> So at the beginning t = 0 and U = 1.37 and A = 13680.  The gap between U
> and A is;
> A - U = 13680 - 1.37 = +ive 13678.63
>
> At the end t=1 (we don't know if it's 1 hour, 1day or 1 tea-break or 1 lot
> of 0.0314seconds) but we do know that U has become 1.31 and A has become
> 1400.
> A - U = 1400 - 1.31 = +ive 1398.69
>
> So the gaps are both positive and non-zero so there is no indication that
> the lines cross at all.  If the lines do cross then they must cross an even
> number of times inorder to arrive on the same side as they started from.
>
> Regards from
> Tom :)
>
>
> On 29 Aug 2017 00:25, "Regina Henschel" <rb.henschel@t-online.de> wrote:
>
> Hi Jorge,
>
> your question is not clear. To draw one line you need:
> (1) The coordinates of two points, which makes four values
> or
> (2) The coordinates of one point and the slope
>
> It is not clear, what meaning you values have.
>
> Kind regards
> Regina
>
> jorge Rodríguez schrieb:
>
> Hi all:
> >         Would you please help me with this problem:
> >
> > I have this set of data:
> >
> >
> > U            A
> >
> > 1.37    13680
> >
> > 1.31    14000
> >
> >
> > I've tried to graph these data that show two lines, first 1.37 with
> > 13680 and 1.31 with 14000, in the same graph. I want that the graph show
> > where the lines intersect. And I prefer that A go in X axis and U in Y
> > axis.
> >
> >
> > I couldn't do it yet. I put the data in some orders but I can get the
> > graph.
> >
> > Thanks in advance,
> >
> > Regards,
> >
> >
> > Jorge Rodríguez
>
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