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[Octave-bug-tracker] [bug #39449] log axis minorticks incorrect if axis


From: anonymous
Subject: [Octave-bug-tracker] [bug #39449] log axis minorticks incorrect if axis limit exceeds 8 orders of magnitude
Date: Fri, 12 Jul 2013 14:36:34 +0000
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0

Follow-up Comment #3, bug #39449 (project octave):

Many thanks for the workaround and for updating the report title. Without the
workaround I get the same result when using "gnuplot" instead of "FLTK" as a
graphics_toolkit.

I tried the example


x = 10.^[0:8];
y = 1:numel (x);
semilogx (x, y);
set (gca, "xminorgrid", "on");
 

and get the correct plot in "gnuplot" and incorrect in "FLTK". 

In "FLTK" the minor tics are available but are incorrect. The x major tics are
at 1e+0, 1e+2, 1e+4, 1e+6, 1e+8. The 8 xminor tics between two adjacent orders
of magnitude (e.g. 1e+2 and 1e+3) are distributed between two adjacent xmajor
tics (e.g. 1e+2 and 1e+4). So seems to be also another problem.

For more than 9 orders of magnitude both "gnuplot" and "FLTK" produce
incorrect plots.

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