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Bug introduced in 10.0 and fixed in 10.2 or earlier


ListLinePlot generates the same legend for different lists of data when PlotMarkers and PlotStyle options are used:

list = {{{1, 2}, {2, 3}, {3, 4}}, {{2, 4}, {4, 6}, {6, 8}}};
ListLinePlot[list, PlotStyle -> Black, PlotMarkers -> {Automatic, 16}, 
PlotLegends -> {"A", "B"}]

enter image description here

Is this a bug?

I have Mathematica v10.0.0 installed on Windows 8 x64.

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3 Answers 3

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You just have to specify the LegendMarkers accordingly:

list = {{{1, 2}, {2, 3}, {3, 4}}, {{2, 4}, {4, 6}, {6, 8}}};
ListLinePlot[list, PlotStyle -> Black, PlotMarkers -> {Automatic, 16},
 PlotLegends -> PointLegend[{"A", "B"}, LegendMarkers -> {Automatic, 16}]]

Plot

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This bug was fixed in Mathematica v10.3 or earlier.

$Version

$\ $"10.3.0 for Microsoft Windows (64-bit) (October 9, 2015)"

list = {{{1, 2}, {2, 3}, {3, 4}}, {{2, 4}, {4, 6}, {6, 8}}};
ListLinePlot[list, PlotStyle -> Black, PlotMarkers -> {Automatic, 16},
  PlotLegends -> {"A", "B"}]

fixedPlot

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  • 2
    $\begingroup$ I do observe this bug in version 10.0 on Windows but do not observe it in versions 10.2 and 9.0.1. So the bug is introduced in 10.0 and fixed in 10.2 or 10.1. I have changed the BUG header accordingly. $\endgroup$ Commented Oct 18, 2015 at 8:17
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Another possibility is that you define your own markers:

markers = {Graphics[{Black, Disk[]}], Graphics[{Black, Rectangle[]}]};

list = {{{1, 2}, {2, 3}, {3, 4}}, {{2, 4}, {4, 6}, {6, 8}}};

ListPlot[list,
 PlotLegends -> SwatchLegend[{"A", "B"},
   LegendMarkers -> markers,
   LegendLabel -> "Series",
   LegendFunction -> (Framed[#, RoundingRadius -> 5] &),
   LegendMargins -> 5],
 Joined -> True,
 PlotStyle -> Black,
 PlotMarkers -> Table[{size, 0.05}, {size, markers}]]

enter image description here

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