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Re: [Matplotlib-users] [matplotlib-devel] Is there a way to link axes of imshow plots?
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From: Jeff W. <js...@fa...> - 2010-06-10 16:06:01
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On 6/9/10 1:58 PM, Benjamin Root wrote:
> Has anybody given any further thought to the implication of having
> Basemap set adjustable as "box-forced" instead of "box"? So far, it
> has been working just fine for me, but I have no clue if there are any
> unintended side-effects.
>
> Ben Root
Ben: To summarize the discussion so far, it seems that "box-forced"
should not be used, and either Basemap should continue to use
adjustable="box" (for the reasons Eric gave in his post yesterday) or
adjustable should not be set at all by Basemap and that job should be
left to the user (since adjustable='box' is the default anyway, as
Jae-Joon pointed out today). Perhaps it would help if you could provide
a usage example for AxesGrid axes sharing with Basemap, so we can see
what the consequences of changing the current behavior are.
-Jeff
>
>
> On Tue, Jun 1, 2010 at 6:00 PM, Benjamin Root <ben...@ou...
> <mailto:ben...@ou...>> wrote:
>
> Right, that is sort of what I am asking. My thinking is that
> Basemap could use 'box-forced' instead of 'box' for the adjustable
> parameter in order to make it and AxesGrid compatible. Usually,
> if one wants to use AxesGrid, they all should have the same domain
> and aspect ratio. I just have no clue what sort of repricussions
> that has for other use cases.
>
> So far, this has worked just fine for me, but I hardly represent
> the normal use cases of Basemap and AxesGrid.
>
> Ben Root
>
>
> On Tue, Jun 1, 2010 at 5:20 PM, Jae-Joon Lee <lee...@gm...
> <mailto:lee...@gm...>> wrote:
>
> If Basemap explicitly sets aspect=1 and adjustable="box" at
> the same
> time, you cannot use this with any axes that shares its axis with
> others (including the axes created by the AxesGrid).
>
> You need to somehow avoid the set_aspect call with adjustable"box"
> (you can set box-forced in stead).
>
> -JJ
>
>
> On Tue, Jun 1, 2010 at 2:45 PM, Benjamin Root <ben...@ou...
> <mailto:ben...@ou...>> wrote:
> >
> > On a related note, I have noticed an incompatibility between
> AxesGrid and
> > Basemap. It appears that Basemap will explicitly set
> adjustable='box' when
> > it calls ax.set_aspect(), but AxesGrid will error out,
> saying that it has to
> > be 'datalim'. What are the implications of using
> 'box-forced' instead of
> > 'box' in Basemap?
> >
> > Ben Root
> >
> > On Thu, May 27, 2010 at 1:59 PM, Jae-Joon Lee
> <lee...@gm... <mailto:lee...@gm...>> wrote:
> >>
> >> ax1 = subplot(121)
> >> ax2 = subplot(122, sharex=ax1, sharey=ax1)
> >>
> >> ax1.set_adjustable("box-forced")
> >> ax2.set_adjustable("box-forced")
> >>
> >> arr1 = np.arange(100).reshape((10, 10))
> >> ax1.imshow(arr1)
> >>
> >> arr2 = np.arange(100, 0, -1).reshape((10, 10))
> >> ax2.imshow(arr2)
> >>
> >> Note the use of set_adjustable("box-forced").
> >> sharex and sharey does not get along with axes of aspect=1 &
> >> adjustable="box".
> >>
> >> -JJ
> >>
> >>
> >>
> >> On Thu, May 27, 2010 at 2:10 PM, <PH...@ge...
> <mailto:PH...@ge...>> wrote:
> >> > Do the “sharex” and “sharey” kwargs help?
> >> >
> >> >
> >> >
> http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.axes
> >> >
> >> >
> >> >
> http://matplotlib.sourceforge.net/examples/pylab_examples/shared_axis_demo.html
> >> >
> >> > -paul
> >> >
> >> >
> >> >
> >> > From: Adam Fraser [mailto:ada...@gm...
> <mailto:ada...@gm...>]
> >> > Sent: Thursday, May 27, 2010 10:44 AM
> >> > To: matplotlib-users
> >> > Subject: [Matplotlib-users] Is there a way to link axes
> of imshow plots?
> >> >
> >> >
> >> >
> >> > Suppose I have a figure canvas with 3 plots... 2 are
> images of the same
> >> > dimensions plotted with imshow, and the other is a
> scatterplot. I'd like
> >> > to
> >> > be able to link the x and y axes of the imshow plots so
> that when I zoom
> >> > in
> >> > one, the other zooms to the same coordinates, and when I
> pan in one, the
> >> > other pans as well.
> >> >
> >> >
> >> >
> >> > I started hacking my way around this by
> >> > subclassing NavigationToolbar2WxAgg
> >> > (shown below)... but there are several problems here.
> >> >
> >> > 1) This will link the axes of all plots in a canvas since
> all I've done
> >> > is
> >> > get rid of the checks for a.in_axes()
> >> >
> >> > 2) This worked well for panning, but zooming caused all
> subplots to zoom
> >> > from the same global point, rather than from the same
> point in each of
> >> > their
> >> > respective axes.
> >> >
> >> >
> >> >
> >> > Can anyone suggest a workaround?
> >> >
> >> >
> >> >
> >> > Much thanks!
> >> >
> >> > -Adam
> >> >
> >> >
> >> >
> >> > from matplotlib.backends.backend_wxagg import
> NavigationToolbar2WxAgg as
> >> > NavigationToolbar
> >> >
> >> > class MyNavToolbar(NavigationToolbar):
> >> >
> >> > def __init__(self, canvas, cpfig):
> >> >
> >> > NavigationToolbar.__init__(self, canvas)
> >> >
> >> >
> >> >
> >> > # override
> >> >
> >> > def press_pan(self, event):
> >> >
> >> > 'the press mouse button in pan/zoom mode callback'
> >> >
> >> >
> >> >
> >> > if event.button == 1:
> >> >
> >> > self._button_pressed=1
> >> >
> >> > elif event.button == 3:
> >> >
> >> > self._button_pressed=3
> >> >
> >> > else:
> >> >
> >> > self._button_pressed=None
> >> >
> >> > return
> >> >
> >> >
> >> >
> >> > x, y = event.x, event.y
> >> >
> >> >
> >> >
> >> > # push the current view to define home if stack
> is empty
> >> >
> >> > if self._views.empty(): self.push_current()
> >> >
> >> >
> >> >
> >> > self._xypress=[]
> >> >
> >> > for i, a in enumerate(self.canvas.figure.get_axes()):
> >> >
> >> > # only difference from overridden method is
> that this one
> >> > doesn't
> >> >
> >> > # check a.in_axes(event)
> >> >
> >> > if x is not None and y is not None and
> a.get_navigate():
> >> >
> >> > a.start_pan(x, y, event.button)
> >> >
> >> > self._xypress.append((a, i))
> >> >
> >> > self.canvas.mpl_disconnect(self._idDrag)
> >> >
> >> >
> >> > self._idDrag=self.canvas.mpl_connect('motion_notify_event',
> >> > self.drag_pan)
> >> >
> >> >
> >> >
> >> > def press_zoom(self, event):
> >> >
> >> > 'the press mouse button in zoom to rect mode
> callback'
> >> >
> >> > if event.button == 1:
> >> >
> >> > self._button_pressed=1
> >> >
> >> > elif event.button == 3:
> >> >
> >> > self._button_pressed=3
> >> >
> >> > else:
> >> >
> >> > self._button_pressed=None
> >> >
> >> > return
> >> >
> >> >
> >> >
> >> > x, y = event.x, event.y
> >> >
> >> >
> >> >
> >> > # push the current view to define home if stack
> is empty
> >> >
> >> > if self._views.empty(): self.push_current()
> >> >
> >> >
> >> >
> >> > self._xypress=[]
> >> >
> >> > for i, a in enumerate(self.canvas.figure.get_axes()):
> >> >
> >> > # only difference from overridden method is
> that this one
> >> > doesn't
> >> >
> >> > # check a.in_axes(event)
> >> >
> >> > if x is not None and y is not None and
> a.get_navigate() and
> >> > a.can_zoom():
> >> >
> >> > self._xypress.append(( x, y, a, i,
> a.viewLim.frozen(),
> >> > a.transData.frozen()))
> >> >
> >> >
> >> >
> >> > self.press(event)
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> ------------------------------------------------------------------------------
> >> >
> >> >
> >> > _______________________________________________
> >> > Matplotlib-users mailing list
> >> > Mat...@li...
> <mailto:Mat...@li...>
> >> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >> >
> >> >
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >>
> >> _______________________________________________
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> >> Mat...@li...
> <mailto:Mat...@li...>
> >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >
> >
> >
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> >
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> >
> >
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