logarithmic errorbar plot

Community matplotlib-users
1

Hallo!

Is there any possibility to use a logarithmic errorbar plot ?
I want to draw my values as with loglog, but additionally add the variance to the data points as with yerr in errorbar.

Or is it maybe better to add the variance manually in a loglog plot - is this possible ?

Thanks for any hints,
LG
Georg

PS:
I also found this unanswered post about the same topic: http://www.nabble.com/semilogx-and-errorbar-tt5182429.html#a5182429

2

Georg,

See errorbar_demo.py in the examples directory. The last example sets the y-axis to a log scale; it should also work if you use the same method to set both scales to log, so it would be like this:

ax = subplot(111)
ax.set_xscale('log')
ax.set_yscale('log')
errorbar(t, s+2, e, f, fmt='o')

You may need to be careful to keep all values, including errorbar limits, positive.

Eric

Georg Holzmann wrote:

···

Hallo!

Is there any possibility to use a logarithmic errorbar plot ?
I want to draw my values as with loglog, but additionally add the variance to the data points as with yerr in errorbar.

Or is it maybe better to add the variance manually in a loglog plot - is this possible ?

Thanks for any hints,
LG
Georg

PS:
I also found this unanswered post about the same topic: http://www.nabble.com/semilogx-and-errorbar-tt5182429.html#a5182429

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3

Many thanks !

LG
Georg

Eric Firing schrieb:

···

Georg,

See errorbar_demo.py in the examples directory. The last example sets the y-axis to a log scale; it should also work if you use the same method to set both scales to log, so it would be like this:

ax = subplot(111)
ax.set_xscale('log')
ax.set_yscale('log')
errorbar(t, s+2, e, f, fmt='o')

You may need to be careful to keep all values, including errorbar limits, positive.

Eric

Georg Holzmann wrote:

Hallo!

Is there any possibility to use a logarithmic errorbar plot ?
I want to draw my values as with loglog, but additionally add the variance to the data points as with yerr in errorbar.

Or is it maybe better to add the variance manually in a loglog plot - is this possible ?

Thanks for any hints,
LG
Georg

PS:
I also found this unanswered post about the same topic: http://www.nabble.com/semilogx-and-errorbar-tt5182429.html#a5182429

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