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Bug introduced in 10.0.0 and fixed in 10.0.1

Version 10:

This works:

  grids[min_, max_] := Table[If[EvenQ[i], {i, Red}, {i, Blue}], 
       {i, Ceiling[min], Floor[max], 1}];
  Plot[Sin[x], {x, -Pi, Pi}, GridLines -> grids]

Mathematica graphics

But when used with LogPlot it gives an error:

LogPlot[x^x, {x, 1, 5}, GridLines -> grids]

Mathematica graphics

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7
  • $\begingroup$ Nuts; so I can't even use a custom function! :-S $\endgroup$
    – Mr.Wizard
    Jul 12, 2014 at 9:10
  • $\begingroup$ @Mr.Wizard WRI wants to make it really hard not to have nice log spaced gridlines for LogPlot :) $\endgroup$
    – Nasser
    Jul 12, 2014 at 9:11
  • $\begingroup$ Related: (54578) $\endgroup$
    – Mr.Wizard
    Jul 12, 2014 at 9:11
  • $\begingroup$ Related: (4066) $\endgroup$
    – m0nhawk
    Jul 12, 2014 at 9:29
  • 3
    $\begingroup$ I've reported the issue for Wolfram Support, [CASE:1212405]. $\endgroup$
    – m0nhawk
    Jul 12, 2014 at 10:11

1 Answer 1

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For LogPlot and LogLogPlot you need to specify both grids, vertical and horizontal.

grids[min_, max_] := 
  Table[If[EvenQ[i], {i, Red}, {i, Blue}], {i, Ceiling[min], 
    Floor[max], 1}];
LogPlot[x^x, {x, 1, 5}, GridLines -> {grids, Automatic}]

enter image description here

And for {grids, None}:

enter image description here

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1
  • 2
    $\begingroup$ Interesting observation, but what about grid-lines for the log direction? GridLines -> {grids, grids} does not work. $\endgroup$
    – Mr.Wizard
    Jul 12, 2014 at 9:31

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