Re: plot question
- To: mathgroup at smc.vnet.net
- Subject: [mg72700] Re: [mg72689] plot question
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 16 Jan 2007 02:15:12 -0500 (EST)
- Reply-to: hanlonr at cox.net
p1=Plot[-Log[Abs[x]],{x,-2,2},
PlotRange->{Automatic,{-1,3.5}},Frame->True,
PlotPoints->100,DisplayFunction->Identity];
Show[p1/.{x_,y_}->{x,-y},
PlotRange->{Automatic,{1,-3.5}},
Axes->False,Frame->True,
FrameLabel->{"x","y"},
FrameTicks->{Automatic,
AbsoluteOptions[p1,FrameTicks][[1,2,2]]/.{y_?NumericQ,r___}->{-y,r},
Automatic,Automatic},
DisplayFunction->$DisplayFunction];
Bob Hanlon
---- dimitris <dimmechan at yahoo.com> wrote:
> Hello!
>
> Consider the following graph of the function -ln(|x|).
>
> Plot[-Log[Abs[x]], {x, -2, 2}, PlotRange -> {Automatic, {-1, 3.5}},
> Axes -> False, Frame -> True, PlotPoints -> 100, FrameLabel -> {"x",
> "y"}]
>
> How is it possible to make the y-axis point downwards (I need this
> because in half-space problems within the solid mechanics the possitive
> vertical axis is pointed into the half-space)?
>
> Thanks in advance.
> Dimitris
>