Re: Multiple scales for Y axis of plot?

*To*: mathgroup at smc.vnet.net*Subject*: [mg31107] Re: [mg31094] Multiple scales for Y axis of plot?*From*: Tomas Garza <tgarza01 at prodigy.net.mx>*Date*: Wed, 10 Oct 2001 03:43:19 -0400 (EDT)*References*: <200110090555.BAA11609@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

I guess the easiest way is to use Frame->True in order to place a second vertical axis on your graph, not alongside to the default one, but rather on the other extreme. Try this, for example: In[1]:= Plot[{Sin[x], 3*Sin[x]}, {x, 0, 2*Pi}, PlotStyle -> {RGBColor[1, 0, 0], RGBColor[0, 0, 1]}, Frame -> True, FrameTicks -> {Automatic, {{-3, "-3 M"}, {-2, "-2 M"}, {-1, "-1 M"}, {1, "1 M"}, {2, "2 M"}, {3, "3 M"}}, Automatic, {{-3, "-30 T"}, {-20, "-2 T"}, {-1, "-10 T"}, {1, "10 T"}, {2, "20 T"}, {3, "30 T"}}}] A second, perhaps more involved, possibility requires placing a vertical line close to the default axis (or anywhere else, for that matter) and drawing a set of ticks on it, together with the suitable text. Example: In[2]:= newTicks=Table[Line[{{0.175,-3+j},{0.175,-3+j}}],{j,0,6,0.2}]; textInstr=Table[Text[ToString[10(-3+j)],{0.175,-3+j},{-1,0}],{j,0,6,1}]; In[3]:= Plot[{Sin[x], 3*Sin[x]}, {x, 0, 2*Pi}, PlotStyle -> {RGBColor[1, 0, 0], RGBColor[0, 0, 1]}, Epilog -> {{RGBColor[0, 0, 1], textInstr}, {RGBColor[0, 0, 1], newTicks, Line[{{0.175, -3}, {0.175, 3}}]}}] Tomas Garza Mexico City ----- Original Message ----- From: "Christopher R. Carlen" <crcarle at sandia.gov> To: mathgroup at smc.vnet.net Subject: [mg31107] [mg31094] Multiple scales for Y axis of plot? > Hi: > > I have a typical multi-expression plot like this: > > Plot[ {f1, f2}, {x,a,b}, PlotStyle->{RGBColor[1,0,0], RGBColor[0,0,1]} > ]. > > On the Y axis, I want to have a different scale for each of the two > functions. How can I generate another scaled Y axis adjacent to the > default one, or in general acheive this sort of thing? I anticipate a > lengthy process of building up all the graphics primitives, but before I > figure all that out, I'm wondering if there is a reasonably easy way. > > Thanks! > > > -- > ____________________________________ > Christopher R. Carlen > Principal Laser/Optical Technologist > Sandia National Labs CA USA >

**References**:**Multiple scales for Y axis of plot?***From:*"Christopher R. Carlen" <crcarle@sandia.gov>