Plots.jl: Erroneous legend line-properties with pgfplotsx()

[korsbo]

With the pgfplotsx backend, the legend gets messed up when one includes a non-labeled series.

julia> plot(rand(10,3), label=["1" "" "3"], color=["blue" "red" "green"])

Here, the third line, "3", is green, but the legend uses the line properties of the second line and thus calls it red.

The pgfplotsx backend still has a bunch of bugs, but I do like it and think it will be great when those are ironed out. Thanks and keep up the good work!

[BeastyBlacksmith]

Thanks for reporting. And don't hesitate to tell me other bugs, when you find them.

[korsbo]

Thanks! :slightly_smiling_face:

[korsbo]

Thanks for responding so quickly but the fix did not work for everything.

plot(rand(4,4), label=["a" "" "" "c"]);
vline!([1,1]);
plot!(rand(4,1), label="red?", color=:red)

The first plot command is now fine, but the last one yields a red line with a non-red legend entry.

Since I can't re-open the issue I'll take the liberty of pinging @BeastyBlacksmith

[BeastyBlacksmith]

Note that reordering of the commands produces the correct result, so probably a bug in vline

plot(rand(4,4), label=["a" "" "" "c"]);
plot!(rand(4,1), label="red?", color=:red);
vline!([1,1])

[korsbo]

I'm not sure where the bug is, but also note:

plot(rand(4,4), label=["a" "" "" "c"]);
vline!([1,1,1]);
plot!(rand(4,4), label="red?", color=:red)

here, the two last red lines are correct but the first two are not.

[korsbo]

vline!([1,1,1]) produces three lines but only one legend entry. The indexing following this command might be a little off.

[BeastyBlacksmith]

actually vline shouldn't create any legend entries

[korsbo]

and yet it does. Also, I don't have an opinion about what the default should be, but it would be good if there was an option for creating a legend entry for a vline.

[BeastyBlacksmith]

Would be nice, if you could try the branch of https://github.com/JuliaPlots/Plots.jl/pull/2449 and report, if it fixes your cases as well.