matplotlib-users Mailing List for matplotlib

Hola,
Use the SVN version, it works pretty OK with 1.0b2

hi

which is the latest version of numpy supported by matplotlib?

I recently updated to numpy 1.0b2 and I cant import pylab anymore.

part of the problem is this code of numerix.__init__.py:

elif which[0] =3D=3D "numpy":
    try:
        import numpy.oldnumeric as numpy
        from numpy.oldnumeric import *
    except ImportError:
        import numpy
        from numpy import *
    from _sp_imports import nx, infinity
    from _sp_imports import UInt8, UInt16, UInt32
    Matrix =3D matrix

matrix is no longer present on numpy.oldnumeric, so... it breaks....

any hints?


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 Jouni=20

Wow!  A guru at work... this solves all my current problems;
your insights and comments are most appreciated!

To return to my first post - matplotlib aims to make simple things
simple - I would argue that the way tickmarks are currently dealt
with is NOT simple & it would be great to see some simplifications
or additions to the interface to deal with the issues raised in this
thread (for example, by aligning their behaviour and properties to=20
other, similar, chart properties).

Thanks again,
Derek

>>> Jouni K Sepp=E4nen <jk...@ik...> 2006/08/23 08:52 AM >>>
[Again copying to matplotlib-users; maybe the main developers can=20=20
comment on whether these shortcomings in the getp/setp interface=20=20
should be fixed.]

Hi Derek,

> It does seem as those these settings affect the top and bottom of=20=20
> the graph - I was wondering if it was possible to show tickmarks=20=20
> along the bottom edge but not the top edge?

I don't think that's directly supported. Here's a hacky way to do it:

     lines =3D getp(gca(), 'xticklines')
     toplines =3D [ l for l in lines if getp(l, 'ydata') =3D=3D (1,) ]
     setp(toplines, visible=3DFalse)

How I came up with this: I knew that I wanted to make some of the=20=20
xticklines invisible, so I looked at the list of line objects for=20=20
clues as to what differs between them. They seem to have xdata and=20=20
ydata properties, and ydata is (0,) for half of the lines and (1,)=20=20
for the other half, so it looks like it is the vertical position in=20=20
axis coordinates. (xdata seems to be in data coordinates.)

> And the other property I do not see on the list is the one that=20=20
> shows whether a tick goes "into" the graph or just "out" - in the=20=20
> prc file, there is a line:
>  xtick.direction      : in     # direction: in or out
> but there is no "direction' property?

You're right, there is no obvious property to control this. Here's an=20=20
even hackier way to do this (and one that doesn't look very future-=20
proof):

     for l in getp(gca(), 'xticklines'):
         setp(l, 'marker', 5-getp(l, 'marker'))

The line objects have a marker property, which is 2 for some markers=20=20
and 3 for the others... so I guessed that one of them means upwards=20=20
and the other downwards, and checked this guess by flipping the=20=20
xtick.direction parameter and looking again. So subtracting the=20=20
marker from 5 flips the direction.

I wonder how this is done in Matlab?

>     label: any string
>
> which shows me that the Yaxis has a label - in this case a
> string - but I do not see how one can set the font properties
> for the Yaxis label as it is not Text object??

I think you cannot do this with setp alone. Use the ylabel command:

     ylabel('foo bar', fontsize=3D18)

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Jouni



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Jordan Dawe wrote:
> So I have a contourf plot and I am resetting the ylims so as to only 
> display a subset of the full contourf plot.  Is there anyway to set norm 
> and the colorbar so they take their colormapping settings using the data 
> currently on display?  By which I mean: the full dataset has a range of 
> 260-320.  The reset axes limits display a region that only has values 
> between 280-310.  I'd like the colormap to extend over this range of 
> values automatically, without having to set vmin=280, vmax=310.  Any way 
> to do that?

Jordan,

I don't think so; and although I have not thought hard about it, my 
impression is that adding this capability would take a lot of work and 
redesign.  I expect that in most cases what you describe would not be 
the desired behavior, so it would have to be a non-default option.

Eric

Hi all,

Sometime in the past couple months, there's been a change in SVN that's 
causing me problems when trying to hide tick labels.  I think the problem is 
related to the get_xticklabels()/get_yticklabels() methods of the Axes class, 
in that they only return a list consisting of a single tick label no matter 
how many there should be.  I'm encountering this problem in SVN rev. 2706.

Here is some example code:

from pylab import *
# set up a plot
x = arange(5)
ax = subplot(111)
ax.plot(x, x)
# hide the first tick label on the x axis
xtl = ax.get_xticklabels()
xtl[0].set_visible(False)
print len(xtl)
ax.set_xlabel('foo')
show()

For me, no x tick labels are drawn, and the length of xtl is one instead of 
the expected 9.  

Can anyone reproduce this?

Mike

So I have a contourf plot and I am resetting the ylims so as to only 
display a subset of the full contourf plot.  Is there anyway to set norm 
and the colorbar so they take their colormapping settings using the data 
currently on display?  By which I mean: the full dataset has a range of 
260-320.  The reset axes limits display a region that only has values 
between 280-310.  I'd like the colormap to extend over this range of 
values automatically, without having to set vmin=280, vmax=310.  Any way 
to do that?

Jordan