[Octave-bug-tracker] [bug #35292] FLTK plot figure crashes when using right-mouse zoom and logarithmic axes

[Rik]

Follow-up Comment #15, bug #35292 (project octave):

I think the problem lies in graphics.cc.  You might want to take a look at
these changesets in Mercurial which appear to be related.


changeset:   13757:1e81e2e30af3
user:        John W. Eaton <address@hidden>
date:        Wed Oct 26 17:36:54 2011 -0400
files:       src/graphics.cc
description:
default limits for logscale plots

* graphics.cc (default_lim): New optional argument, logscale.
Return [0.1, 1.0] if logscale is true.
(axes::properties::get_axis_limits): Return default limits if min/max
values are at their initial values.


changeset:   13756:6dfebfa334cb
user:        John W. Eaton <address@hidden>
date:        Wed Oct 26 14:19:54 2011 -0400
files:       liboctave/dMatrix.cc liboctave/dMatrix.h liboctave/dNDArray.cc
liboctave/dNDArray.h liboctave/fMatrix.cc liboctave/fMatrix.h
liboctave/fNDArray.cc liboctave/fNDArray.h liboctave/lo-mappers.h
liboctave/mx-inlines.cc src/graphics.cc src/graphics.h.in
description:
allow negative data log plots with OpenGL+FLTK graphics (bug #34232)

* mx-inlines.cc (mx_inline_any_positive): New function.
* lo-mappers.h (xpositive_sign (double), xpositive_sign (float)):
New functions.
* fNDArray.h, fNDArray.cc (FloatNDArray::any_element_is_positive):
New function.
* fMatrix.h, fMatrix.cc (FloatMatrix::any_element_is_positive):
New function.
* dNDArray.h, dNDArray.cc (NDArray::any_element_is_positive):
New function.
* dMatrix.h, dMatrix.cc (Matrix::any_element_is_positive):
New function.
* graphics.h.in (log_scaler::do_neg_scale): New function.
(log_scaler::scale (const Matrix&) const,
log_scaler::scale (const NDArray&) const): Call do_neg_scale if no
array elements are positive.
* graphics.cc (axes::properties::get_axis_limits): Omit zero from
positive values for log plots.  Correctly widen range for all negative
log plots.




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