Re: [Matplotlib-users] Error bars on a loglog?

[John H. <jdh...@ac...>]

>>>>> "Tom" == Tom Kornack <to...@ko...> writes:

    Tom> Hello: I'm having trouble figuring out how to plot error bars
    Tom> on a log log plot. It doesn't seem that loglog takes an
    Tom> errorbar keyword. Any pointers?

Hi Tom,

The semilogx, semilogy and loglog plots are thin wrappers around plot
that set the scale of the axes.  So you can use a log scale on any
axis that has strictly positive data

  from matplotlib.matlab import *

  x = arange(10)
  y = 1e6*rand(10)+1e5+1
  err =  1e5*rand(10)
  ax = gca()
  errorbar(x,y,err)
  ax.set_yscale('log')
  show()

See also http://matplotlib.sf.net/examples/log_bar.py .

JDH