Hello,

Sounds like you failed to bound your values away from zero,
despite what you say above.

A minimal example is helpful if you want a better answer.

I did it in my first e-mail but had to remove it as SourceForge rejected the attachments I sent :-\ Anyway, I think you're right ; I have a value to plot, for example, with y = 0.0014 and a dy = 0.015. In logarithmic scale the coordinates of the error bar's ticks will be then, I guess y + dy and y - dy, i.e. something below 0 in the second case. Is there a way to force the display of these ticks, at least the ones that can be drawn ?

        Aurelien


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