The code plot([x,x^2],-.2,2) is a nice shortcut for plotting both x and x!^ 2 on the same graph. However, if you want to choose different colors or linestyles for each function, then it seems you have to execute, e.g.,

p1=plot(x,-.2,1.2,color='blue',linestyle='dotted'); 
p2=plot(x^2,-.2,1.2,color='red',linestyle='dashed'); 
p1+p2

Here is how Maple and Mathematica handle this issue, respectively:

It seems that the keyword 'fill' allows for a dictionary input, so perhaps the relevant code there could serve as a template?

[> plot([x, x^2], x= -.2..1.2, color=["blue", "red"],linestyle=[dot, longdash]);

In[1]:= Plot[{x, x^2}, {x, -.2, 1.2}, PlotStyle -> {{Blue, Dotted}, {Red, Dashed}}]

Remarks:

1. distinct choices for the curves should be made automatically for the user. Running, e.g.,

In[1]:= Plot[{x, x^2}, {x, -.2, 1.2}]

in Mathematica produces two curves that are not both solid-blue.

2. the functionality for fillcolor, color, and fill should be the same insofar as possible.

CC: @kcrisman @ppurka @jdemeyer @jasongrout @saliola @sagetrac-jhonrubia6 @paulmasson @novoselt

Component: user interface

Keywords: plot, linestyle, color

Author: Aaron Lauve

Branch/Commit: 4acb9d6

Reviewer: Paul Masson

Issue created by migration from https://trac.sagemath.org/ticket/12962