Re: and color via PlotStyle
- To: mathgroup at smc.vnet.net
- Subject: [mg118527] Re: and color via PlotStyle
- From: Alan <alan.isaac at gmail.com>
- Date: Sun, 1 May 2011 06:21:52 -0400 (EDT)
- Reply-to: comp.soft-sys.math.mathematica at googlegroups.com
On Friday, April 29, 2011 7:33:39 AM UTC-4, Bill Rowe wrote: > [version 1] works as you are expecting only because the argument to > Plot is an explicit list. This is the only case where Plot uses > multiple colors. (Warning: Mathematica novice ahead.) I do not understand this statement. Do you mean the key is that Plot sees a head of List rather than of ReplaceAll? But as a novice I want to know, why does Plot see the ReplaceAll? What is the rule that determines whether or not a command will evaluate its argument before acting on it? > Plot always evaluates its arguments by > first substituting a numeric value for the independent variable > and only after that is the expression evaluated. The consequence > it for the argument above, Plot does not see a list of > expressions. Instead it sees a list of numeric values which is > treated as a single function with multiple values and > consequently plotted in a single color. Can you please restate that. I'm finding it opaque. (Also, is there no way to assign multiple colors to a mutiple valued function?) > There is no inconsistency in the behavior of Plot. The behavior > I am describing is well documented even if not always well understood. Can you please point to the documentation you have in mind here. Thanks! Alan Isaac