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There is an odd white mesh that appears on top of any contour plot I make.

ContourPlot[x + 2 y, {x, 80, 300}, {y, 50, 100}]

enter image description here

Any ideas on how I get rid of this? I've tried a new notebook with just that command but it does not go away.

Just adding that this is also happening in the ContourPlot help page so I think some global variable has been set that is doing this. Restarting Mma has not helped.

Version 10.2 on Win 8.1 64-bit.

Added output of Options

Options[ContourPlot] {AlignmentPoint -> Center, AspectRatio -> 1, Axes -> False, AxesLabel -> None, AxesOrigin -> Automatic, AxesStyle -> {}, Background -> None, BaselinePosition -> Automatic, BaseStyle -> {}, BoundaryStyle -> None, BoxRatios -> Automatic, ClippingStyle -> None, ColorFunction -> Automatic, ColorFunctionScaling -> True, ColorOutput -> Automatic, ContentSelectable -> Automatic, ContourLabels -> Automatic, ContourLines -> True, Contours -> Automatic, ContourShading -> Automatic, ContourStyle -> Automatic, CoordinatesToolOptions -> Automatic, DisplayFunction :> $DisplayFunction, Epilog -> {}, Evaluated -> Automatic, EvaluationMonitor -> None, Exclusions -> Automatic, ExclusionsStyle -> None, FormatType :> TraditionalForm, Frame -> True, FrameLabel -> None, FrameStyle -> {}, FrameTicks -> Automatic, FrameTicksStyle -> {}, GridLines -> None, GridLinesStyle -> {}, ImageMargins -> 0., ImagePadding -> All, ImageSize -> Automatic, ImageSizeRaw -> Automatic, LabelStyle -> {}, LightingAngle -> None, MaxRecursion -> Automatic, Mesh -> None, MeshFunctions -> {}, MeshStyle -> Automatic, Method -> Automatic, PerformanceGoal :> $PerformanceGoal, PlotLabel -> None, PlotLegends -> None, PlotPoints -> Automatic, PlotRange -> {Full, Full, Automatic}, PlotRangeClipping -> True, PlotRangePadding -> Automatic, PlotRegion -> Automatic, PlotTheme :> $PlotTheme, PreserveImageOptions -> Automatic, Prolog -> {}, RegionFunction -> (True &), RotateLabel -> True, TargetUnits -> Automatic, Ticks -> Automatic, TicksStyle -> {}, WorkingPrecision -> MachinePrecision}
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  • $\begingroup$ Looks like a "TransparentPolygonMesh" mesh problem, but I cannot reproduce it. Possible duplicate(?): mathematica.stackexchange.com/questions/1400/… $\endgroup$ Commented Sep 6, 2015 at 14:09
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    $\begingroup$ Cannot reproduce with version 10.2 on Windows 7 x64. $\endgroup$ Commented Sep 6, 2015 at 15:41
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    $\begingroup$ There is no white mesh with the above Option[ContourPlot]; Windows 10 and Mma 10.2 $\endgroup$ Commented Sep 6, 2015 at 17:21
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    $\begingroup$ I'm voting to close this question as off-topic because the problem could not be reproduced. $\endgroup$ Commented Sep 7, 2015 at 4:59
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    $\begingroup$ @MarcoB Please give a larger benefit of the doubt on reproducibility. In this case for example I can easily reproduce the problem. Not everyone has the same platform and system configuration and many localized idiosyncrasies appear as a result. $\endgroup$ Commented Sep 7, 2015 at 7:08

1 Answer 1

Reset to default
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Closely related:

I can easily reproduce your problem in 10.1 under Windows 7 merely by setting:

SetOptions[$FrontEndSession, Antialiasing -> True]

Example of output then produced:

mwe of SetOptions[$FrontEndSession, Antialiasing -> True]

This is a case of anti-aliasing gone wrong, and it is normally handled correctly by the default setting of Automatic:

SetOptions[$FrontEndSession, Antialiasing -> Automatic]

If this fixes your problem change $FrontEndSession to $FrontEnd to make the setting persist.

If setting Automatic does not fix the problem the cause it very likely the same anyway but from a different source. Do you have a video card set to force AA in all applications? Try changing that to "application preference" or similar.

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  • $\begingroup$ So it seems my question is a duplicate as I didn't know exactly what to search for. $\endgroup$ Commented Sep 7, 2015 at 10:42
  • $\begingroup$ @Edmund That's OK, and thanks for searching before posting. Your question will probably help make searching easier for others with the same issue. Did SetOptions[$FrontEnd, Antialiasing -> Automatic] fix the problem? $\endgroup$ Commented Sep 7, 2015 at 19:38
  • $\begingroup$ Yes, I had upgrading both my graphics drivers. I think it was from the Intel driver as I have upgraded the Nvidia ones many times before without issue. Also, the default is the Intel on board GPU so Mma was running on that. $\endgroup$ Commented Sep 7, 2015 at 19:56

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