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Great, thank you very much...that did the trick.
I don't know why broken_barh does not come in the legend, either; maybe is
because of the ambiguity as to which color to use in the legend...a single
broken barh command can have several bars with different colors. 
gsal
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[Forgot to reply-all, sorry for the dup, gsal]
On Fri, Jan 4, 2013 at 1:22 PM, gsal <sal...@gm...> wrote:
> can you provide an example? The reference help is only two lines!
>
> Given:
> [code]
> import numpy as np
> import matplotlib.pyplot as plt
>
> fig = plt.figure()
> ax = fig.add_subplot(111)
> ax.broken_barh([ (110, 30), (150, 10) ] , (10, 9), facecolors='b',
> label='barh')
>
> ax.set_xlim((0,200))
> ax.set_ylim((0,50))
>
> ax.legend()
>
> plt.show()
> [/code]
>
> How do I import what in order to, say, create a plot
> "plot([0.0],[0.0],'bs')" so that I can at least plot a marker of the same
> color as my broken_barh so that when the legend is added, the correct icon
> precedes the label?
>
> I tried adding
>
> pp = plt.plot([80],[40],'bs', label='proxy artist')
>
> to the previous program, right before the legend command, but it actually
> plots the marker, too.
>
> Is there a way to import "plot" or "Line2D" or something so that I can
> produce an artist that is NOT related to the plot and, hence, not plotted?
> (is that what "proxy artist" means?).
>
Yes. Proxy artists are created in memory but never added to the axes
object. Here's an expanded version of the example:
import matplotlib.patches as mpatch
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
patch = mpatch.Rectangle((0, 0), 1, 1, fc="r")
ax.legend([patch], ["Proxy artist"])
plt.show()
So for your example, I'd do the following:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.patches as mpatch
fig = plt.figure()
ax = fig.add_subplot(111)
ax.broken_barh([ (110, 30), (150, 10) ] , (10, 9), facecolors='b',
label='barh')
ax.set_xlim((0,200))
ax.set_ylim((0,50))
fakeredbar = mpatch.Rectangle((0, 0), 1, 1, fc="r")
fakebluebar = mpatch.Rectangle((0, 0), 1, 1, fc="b")
ax.legend([fakeredbar, fakebluebar], ['Red Data', 'Blue Data'])
plt.show()
Now to me, it seems very strange that broken_barh doesn't generate any
items in a legend. Not sure why that is but it seems like a bug.
Hope that helps,
-paul

can you provide an example? The reference help is only two lines! 
Given:
[code]
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.broken_barh([ (110, 30), (150, 10) ] , (10, 9), facecolors='b',
label='barh')
ax.set_xlim((0,200))
ax.set_ylim((0,50))
ax.legend()
plt.show()
[/code]
How do I import what in order to, say, create a plot
"plot([0.0],[0.0],'bs')" so that I can at least plot a marker of the same
color as my broken_barh so that when the legend is added, the correct icon
precedes the label?
I tried adding 
pp = plt.plot([80],[40],'bs', label='proxy artist')
to the previous program, right before the legend command, but it actually
plots the marker, too.
Is there a way to import "plot" or "Line2D" or something so that I can
produce an artist that is NOT related to the plot and, hence, not plotted?
(is that what "proxy artist" means?).
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On Fri, Jan 4, 2013 at 8:41 AM, gsal <sal...@gm...> wrote:
> So, it looks like broken_barh's do not show up on the legend...is there
> work
> around for this?
>
> Or,
>
> Is there a way to fake a legend? A way to set legend to whatever I want?
>
> Thanks,
>
> gsal
>
>
To fake a legend, try using so-called proxy artists:
http://matplotlib.org/users/legend_guide.html#using-proxy-artist
-paul

Maybe you can use the zoom example
<http://matplotlib.org/examples/pylab_examples/axes_zoom_effect.html> and
the binding method idea so that when you click on some point in the main
graph, the zooming graph updates and plots from -50 to +50 days from the
point that you clicked on the main graph...just an idea.
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Hhhmmm...I am thinking to may have to implement some interactivity
(callbacks) to your plot and be able to, say, click or right click and
demand that the current settings be stored or restored from choices
previously stored...but this has to be all your doing.
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So, it looks like broken_barh's do not show up on the legend...is there work
around for this?
Or,
Is there a way to fake a legend? A way to set legend to whatever I want? 
Thanks,
gsal
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Alex Goodman <goo...@il...>
writes:
> Try using the set_ylabel() and set_xlabel() methods for each Axes instance
> instead, eg:
>
> a[0].set_ylabel('f1')
> ...
works as intended, tx Alex

Hi Giacomo,
Try using the set_ylabel() and set_xlabel() methods for each Axes instance
instead, eg:
a[0].set_ylabel('f1')
a[0].set_xlabel('t')
a[1].set_ylabel('f2')
a[1].set_xlabel('t')
On Fri, Jan 4, 2013 at 5:44 AM, <gia...@po...> wrote:
> two plots in a figure:
> ########################################################################
> from pylab import *
> ...
> f,a = subplots(nrows=2, sharex=False, sharey=False)
> a[0].plot(x,f0(x))
> ylabel('f1')
> xlabel('t')
> ...
> a[1].plot(x,f1(x))
> ylabel('f2')
> xlabel('t')
> ...
> show()
> ########################################################################
> but all i can get are labels for ONLY the lower subplot, what shoud I do?
>
> any help will be appreciated
>
> tia
> gb
>
>
>
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Alex Goodman
University of Illinois at Urbana-Champaign
Email: goo...@il...

two plots in a figure:
########################################################################
from pylab import *
...
f,a = subplots(nrows=2, sharex=False, sharey=False)
a[0].plot(x,f0(x))
ylabel('f1')
xlabel('t')
...
a[1].plot(x,f1(x))
ylabel('f2')
xlabel('t')
...
show()
########################################################################
but all i can get are labels for ONLY the lower subplot, what shoud I do?
any help will be appreciated
tia
 gb