Thickness of logarithmic tick marks
Reproduced in v.10.0.0 under Win7 x64. In versions 8.0.4 and 9.0.1 the behavior differs in details but the bug is also present: only major logarithmic frame ticks change their thickness, but not minor ticks.
Let us elaborate. First of all, in v.10 the logarithmic tick specifications are generated dynamically when the plot is rendered by the FrontEnd by calling Charting`ScaledTicks
and Charting`ScaledFrameTicks
:
LogPlot[x^2, {x, 1, 3}, Frame -> True];
Options[%, FrameTicks]
{FrameTicks -> {{Charting`ScaledTicks[{Log, Exp}], Charting`ScaledFrameTicks[{Log, Exp}]}, {Automatic, Automatic}}}
Here is what these functions return (I have shortened the output for readability):
Charting`ScaledTicks[{Log, Exp}][1, 10]
{{2.30259, 10, {0.01, 0.}, {AbsoluteThickness[0.1]}}, {4.60517, 100, {0.01, 0.}, {AbsoluteThickness[0.1]}}, {6.90776, 1000, {0.01, 0.}, {AbsoluteThickness[0.1]}}, {9.21034, Superscript[10,4], {0.01, 0.}, {AbsoluteThickness[0.1]}}, {0., Spacer[{0, 0}], {0.005, 0.}, {AbsoluteThickness[0.1]}}, {0.693147, Spacer[{0, 0}], {0.005, 0.}, {AbsoluteThickness[0.1]}}}
It is clear that the thickness specifications are already included and have higher priorities than the FrameTicksStyle
directive. That is the reason why the latter has no effect.
So this behavior reflects inconsistent implementation of Charting`ScaledTicks
and Charting`ScaledFrameTicks
which should NOT include styling into the tick specifications they generate. It is a bug.
Here is a function fixLogPlot
which fixes this:
fixLogPlot[gr_] :=
Show[gr, FrameTicks -> {{# /. _AbsoluteThickness :> (## &[]) &@*
Charting`ScaledTicks[{Log,
Exp}], # /. _AbsoluteThickness :> (## &[]) &@*
Charting`ScaledFrameTicks[{Log, Exp}]}, {Automatic,
Automatic}}];
fixLogPlot@
LogPlot[x^2, {x, 1, 3}, Frame -> True,
FrameTicksStyle -> Directive[Black, AbsoluteThickness[2]]]
UPDATE
Here is universal fix for version 10 which works for all types of log plots:
fixLogPlots[gr_] :=
gr /. f : (Charting`ScaledTicks | Charting`ScaledFrameTicks)[{Log, Exp}] :>
(Part[#, ;; , ;; 3] &@*f)
UPDATE 2
And here is universal fix for versions 8 and 9:
fixLogPlots[gr_] := gr /. f : (Ticks | FrameTicks -> _) :> (f /. _Thickness :> (## &[]))
This seems to be fixed in 12.1.1: