Re: ContourPlots

*To*: mathgroup at christensen.cybernetics.net*Subject*: [mg2052] Re: [mg2024] ContourPlots*From*: lawry at maths.ox.ac.uk (James Lawry)*Date*: Mon, 18 Sep 1995 01:50:25 -0400*Organization*: Oxford Centre for Industrial & Applied Mathematics

In article <DEzDwt.660 at wri.com>, Tom Wickham-Jones <twj at wri.com> wrote: >If you want to plot an implicit function then the command to use is ContourPlot. >If you want to combine two contours you can do this with Show[plot1,plot2]. >When you do it you probably want to turn off contour shading so that one plot >does not hide the other. > > > >In[8]:= ContourPlot[ x^2 +y^2-1, {x, -2,2},{y,-2,2}, > ContourShading -> False, Contours -> {0}] > > >Out[8]= -ContourGraphics- > >In[9]:= ContourPlot[ x^2 y^2-1, {x, -2,2},{y,-2,2}, > ContourShading -> False, Contours -> {0}] > > >Out[9]= -ContourGraphics- > >In[10]:= Show[%, %%] > >Out[10]= -Graphics- > > >Tom Wickham-Jones >WRI OK, now I want to have shading turned on and contour lines not displayed for one function, and shading turned off and and contour lines displayed in the other function, and show them both on the one plot. So effectively I want different options for the two constituent plots at the In[10] stage. Is this possible in Mathematica or will I have to go back to doing it in another package? James Lawry.