Plot curiousities ...
- To: mathgroup at christensen.Cybernetics.NET
- Subject: [mg314] Plot curiousities ...
- From: "Dave Shreiner" <shreiner at wizard.clubfed.sgi.com>
- Date: Sun, 11 Dec 1994 23:32:07 -0500
Hi, Plot[] seems to be a little contrary at the moment. Perhaps, its too late, and I'm missing something, but Plot[] seems to be very picky about which lists its willing to execute. For example, consider the following session, > [10] math > Mathematica 2.2 for SGI > Copyright 1988-93 Wolfram Research, Inc. > -- Motif graphics initialized -- > > In[1]:= $Version > > Out[1]= SGI 2.2 (December 22, 1993) > > In[2]:= Plot[ { x, x^2, x^3 }, { x, 0, 3 }] > > Out[2]= -Graphics- Here, I actually get a window with the plots in it. > In[3]:= Plot[ Power[ x, Range[ 3 ]] // Flatten, { x, 0, 3 }] > > Plot::plnr: CompiledFunction[{x}, Flatten[<<1>>], -CompiledCode-][x] > is not a machine-size real number at x = 0.. > > Plot::plnr: CompiledFunction[{x}, Flatten[<<1>>], -CompiledCode-][x] > is not a machine-size real number at x = 0.125. > > Plot::plnr: CompiledFunction[{x}, Flatten[<<1>>], -CompiledCode-][x] > is not a machine-size real number at x = 0.25. > > General::stop: Further output of Plot::plnr > will be suppressed during this calculation. > > Out[3]= -Graphics- Here, I get an empty plot window, as expected from the messages. > In[4]:= Power[ x, Range[ 3 ]] // Flatten > > 2 3 > Out[4]= {x, x , x } However, this list seems to be identical to the one that I hand entered. An undocumented feature, perhaps? This certainly isn't a critical problem, but I would like to know if I'm the cause of the problem. Thanks for any assistance. -- Thanx, Dave --------------------------------------------------------------------------- Dave Shreiner <shreiner at sgi.com> Silicon Graphics, Inc. (301) 572 - 1693 Can humanity butt in line for extinction?