pgf-tikz / pgfplots

pgfplots - A TeX package to draw normal and/or logarithmic plots directly in TeX in two and three dimensions with a user-friendly interface and pgfplotstable - a TeX package to round and format numerical tables. Examples in manuals and/or on web site.
http://pgfplots.sourceforge.net/
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Logarithmic error bars #329

Closed pgf-tikz-bot closed 4 years ago

pgf-tikz-bot commented 8 years ago

Migrated from SourceForge https://sourceforge.net/p/pgfplots/support-requests/11/ Author: alcarazr Timestamp: 2016-02-05 16:02:53.640000

Hi,

I was trying to represent some error bars in a logarithmic scale and found some weird effects, such as asymmetric error bars.

According to this, to represent error bars correctly on a log plot, one should use differential analysis, so that absolute errors become relative errors and the error bars are symmetric again.

Is there any way to achieve this with the current implementation of pgfplots? Can we expect this to be implemented so that error bars are correctly plotted when using logarithmic scales?

Thanks you very much,

Rodrigo

pgf-tikz-bot commented 6 years ago

Migrated from SourceForge https://sourceforge.net/p/pgfplots/support-requests/11/#f159 Author: cfeuersaenger Timestamp: 2018-03-21 16:59:35.732000

Hm. Sounds reasonable. I have never really used error bars, especially not in log coords, so the actual implementation might be no use-case.

I suppose that you cannot force the current implementation to behave as desired. I will convert your request into a feature request (it is not a bug since pgfplots works as designed).

pgf-tikz-bot commented 6 years ago

Migrated from SourceForge https://sourceforge.net/p/pgfplots/support-requests/11/#bd1e Author: cfeuersaenger Timestamp: 2018-03-21 17:01:17.876000

https://sourceforge.net/p/pgfplots/feature-requests/78/

pgf-tikz-bot commented 6 years ago

Migrated from SourceForge https://sourceforge.net/p/pgfplots/support-requests/11/#7b9c Author: cfeuersaenger Timestamp: 2018-03-21 17:01:32.086000