adjust markersize (#2589)

* fix px to pt conversion for markers

* fix test

* bump version [skip ci]

@JuliaRegistrator register

Project.toml

@@ -1,7 +1,7 @@
 name = "Plots"
 uuid = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 author = ["Tom Breloff (@tbreloff)"]
-version = "1.0.10"
+version = "1.0.11"
 
 [deps]
 Base64 = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"

src/backends/pgfplotsx.jl

@@ -768,7 +768,7 @@ function pgfx_marker(plotattributes, i = 1)
     a_stroke = alpha(cstr_stroke)
     mark_size =
         pgfx_thickness_scaling(plotattributes) *
-        0.5 *
+        0.75 *
         _cycle(plotattributes[:markersize], i)
     return PGFPlotsX.Options(
         "mark" =>
@@ -780,7 +780,7 @@ function pgfx_marker(plotattributes, i = 1)
             "fill" => cstr,
             "fill opacity" => a,
             "line width" =>
-                pgfx_thickness_scaling(plotattributes) *
+                pgfx_thickness_scaling(plotattributes) * 0.75 *
                 _cycle(plotattributes[:markerstrokewidth], i),
             "rotate" => if shape == :dtriangle
                 180

test/test_pgfplotsx.jl

@@ -84,7 +84,7 @@ end
       @test marker.options["mark"] == "*"
       @test marker.options["mark options"]["color"] ==
             RGBA{Float64}(colorant"green", 0.8)
-      @test marker.options["mark options"]["line width"] == 1
+      @test marker.options["mark options"]["line width"] == 0.75 # 1px is 0.75pt
    end # testset
    @testset "Plot in pieces" begin
       pic = plot(rand(100) / 3, reg = true, fill = (0, :green))