Re: why an extra mark in legend?

*To*: mathgroup at smc.vnet.net*Subject*: [mg106271] Re: [mg106240] why an extra mark in legend?*From*: DrMajorBob <btreat1 at austin.rr.com>*Date*: Thu, 7 Jan 2010 02:28:37 -0500 (EST)*References*: <201001061057.FAA14960@smc.vnet.net>*Reply-to*: drmajorbob at yahoo.com

Post what you really did! When I evaluate THIS code: Needs["PlotLegends`"] Plot[Sin@t, {t, 0, 20}, PlotRange -> {{0, 20}, {-2, 1}}, Frame -> True, Axes -> True, FrameLabel -> {"Time(s)", "value"}, PlotStyle -> {{Red, Dashed, Thick}, {Blue, Thick}, {Black, Dotted, Thick}}, PlotLegend -> {"a", "b", "c"}, LegendPosition -> {0.5, -0.3}, LegendSize -> {0.2, 0.3}, LegendShadow -> None] I see only "a" and a horizontal red dash, in the legend. Bobby On Wed, 06 Jan 2010 04:57:51 -0600, Haibo Min <haibo.min at gmail.com> wrote: > Hello, everyone. > > Suppose that I have attained a[t], b[t], c[t] in NDSolve. > > s=NDSolve[...]. > > Then, I use > > Plot[{a[t], b[t], c[t]} /. s // Evaluate, {t, 0, 20}, PlotRange -> {{0, > 20}, {-2, 1}}, Frame -> True, Axes -> True, FrameLabel -> {"Time(s)", > "value"}, > PlotStyle -> {{Red, Dashed, Thick}, {Blue, Thick}, {Black, Dotted, > Thick}}, > PlotLegend -> {"a", "b", "c"}, LegendPosition -> {0.5, -0.3}, > LegendSize -> > {0.2, 0.3}, > LegendShadow -> None] > > to plot. It was supposed to have three marks in the legend, but I got > four, > where one of the marks had no text. Why? > > Thanks. > > Haibo > > -- DrMajorBob at yahoo.com

**References**:**why an extra mark in legend?***From:*Haibo Min <haibo.min@gmail.com>