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>>>>> "Tony" == Tony Mannucci <Ton...@jp...> writes:

    Tony> Let me know if this is not the appropriate way to report
    Tony> bugs.  Here is the example code:

This is a good way to report them, but none of these are bugs :-)

    Tony> import numpy as N import matplotlib matplotlib.use("TkAgg")
    Tony> import pylab as PLT

    Tony> x = N.array([1.,2.,3.,4.,5.])  y =
    Tony> N.array([2.2,3.3,4.4,5.5,6.6]) PLT.figure(1) PLT.clf()
    Tony> PLT.hold(False) PLT.plot(x,y,'+',color='k',linestyle='--')

    Tony> ***Symbol is blue (wrong), line is dashed and black (right)

A single line object can have a linestyle and a marker and their
colors are independent.  The "color" kwarg applies to the linestyle.
The markerfacecolor and markeredgecolor kwargs control the marker
color.

    Tony> PLT.plot(x,y,'+',color=[0,0,0],linestyle='--')

    Tony> ***Same error as above

Same explanation.

    Tony> PLT.plot(x,y,'+r',linestyle='--')

    Tony> ***Works correctly (symbol and line are red)

The format color string applies to the marker or line -- this is
different than the kwargs.

    Tony> PLT.axis([0.0,6.0,0.0,7.0]) PLT.xlabel('X
    Tony> Label',fontsize=18) PLT.ylabel('Y label',fontsize=18)
    Tony> PLT.title('TITLE',fontsize=24) PLT.hold(True)

    Tony> PLT.plot(x+0.1,y-0.2,'+r')

    Tony> ***ERROR: resets axis limits (is this an error? Note hold is
    Tony> on)

"hold" controls whether multiple lines are plotted on the same axes or
whether the axes is cleared with successive plots.  To disable
autoscaling, use 

  ax.set_autoscale_on(False)

    Tony> PLT.axis([0.0,6.0,0.0,7.0])

    Tony> ***Restores manual axes limits

As it should.

Thanks,
JDH

Let me know if this is not the appropriate way to report bugs.

Here is the example code:

import numpy as N
import matplotlib
matplotlib.use("TkAgg")
import pylab as PLT

x = N.array([1.,2.,3.,4.,5.])
y = N.array([2.2,3.3,4.4,5.5,6.6])
PLT.figure(1)
PLT.clf()
PLT.hold(False)
PLT.plot(x,y,'+',color='k',linestyle='--')

***Symbol is blue (wrong), line is dashed and black (right)

PLT.plot(x,y,'+',color=[0,0,0],linestyle='--')

***Same error as above

PLT.plot(x,y,'+r',linestyle='--')

***Works correctly (symbol and line are red)

PLT.axis([0.0,6.0,0.0,7.0])
PLT.xlabel('X Label',fontsize=18)
PLT.ylabel('Y label',fontsize=18)
PLT.title('TITLE',fontsize=24)
PLT.hold(True)

PLT.plot(x+0.1,y-0.2,'+r')

***ERROR: resets axis limits (is this an error? Note hold is on)

PLT.axis([0.0,6.0,0.0,7.0])

***Restores manual axes limits

>>>  matplotlib.__version__
'0.87.2'
>>>  N.__version__
'0.9.6'

-Tony

-- 
Tony Mannucci
Supervisor, Ionospheric and Atmospheric Remote Sensing Group
  Mail-Stop 138-308,                     Tel > (818) 354-1699
  Jet Propulsion Laboratory,              Fax > (818) 393-5115
  California Institute of Technology,     Email > Ton...@jp...
  4800 Oak Grove Drive,                   http://genesis.jpl.nasa.gov
  Pasadena, CA 91109