Correction to my fix:
if (scale_ == LinearScale)
resolution = fabs(1e-3 * segment.renderMinimum)
On Sep 18, 2012, at 2:28 PM, Joseph VanAndel wrote:
> Using Wt 3.2.2-p1:
>
> If I plot data that has the constant value of 2000.0, with scale_ =
> LinearScale,
> the assertion at the end of WAxis.C fails:
>
> assert (segment.renderMinimum < segment.renderMaximum)
>
> The problem appears to be in the calculation of 'resolution'.
> if (scale_ == LinearScale)
> resolution =1e3 * std::numeric_limits<double>::epsilon()
>
> since resolution has the value 2.2204460492503131e-13, it is too small to add
> or subtract to
>
> segment.renderMinimum
> or
> segment.renderMaximum
>
> to cause these two values to differ.
>
> A fix that works for me is to calculate resolution based on the segment
> limits:
> resolution = 1e-3 * segment.renderMinimum
>
>
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