Re: ContourPlots
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg2042] Re: [mg2024] ContourPlots
- From: Tom Wickham-Jones <twj>
- Date: Sat, 16 Sep 1995 01:42:24 -0400
>I would like to know how to plot two ContourPlots (with Contours at
>0) into one plot. The command Show[plot1,plot2], where plot1 and
>plot2
>are defined as ContourPlots does not work, Also, the command
>PLot[{f1,f2},{x,.,.},{y,.,.}], where f1 and f2 define two implicit
>functions in x and y does not work either. Is there a way that works
>well?
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