Re: [Matplotlib-users] grid on log-plots

[Yann <ya...@al...>]

I can not try your revision but I will do it as soon as it is released.
Nervertheless I try your snippet with an AxesZero. I get the gridlines 
and the axis but the first was over the second. It is not what I expected.
As far as I am concerned, I can wait until matplotlib next release.

Thanks,

Yann

On 09/08/2009 08:13 PM, Jae-Joon Lee wrote:
> On Tue, Sep 8, 2009 at 11:51 AM, Yann
> Goudard<mat...@al...>  wrote:
>    
>> Hi,
>>
>> I have the same behaviour with LocatableAxes. HostAxes, ParasiteAxes and
>> LocatableAxes depend on 'mpl_toolkits.axes_grid.axislines.Axes'. It must
>> be the matter origin.
>>      
> Yes, and this was because I forgot to implement some necessary methods.
> This is now fixed in the svn trunk. So if you can,please give it a try.
>
>    
>> This another example should draw a grid but does not:
>>
>> import wx
>> from wx import Frame
>> from matplotlib.backends.backend_wxagg import FigureFrameWxAgg,
>> FigureCanvasWxAgg
>> from matplotlib.figure import Figure
>> from mpl_toolkits.axes_grid.axes_divider import LocatableAxes
>>
>> fig = Figure((1, 1), 50)
>> axes = LocatableAxes(fig, [0, 0, 1, 1])
>> # axes.toggle_axisline(False)
>> axes.grid(True)
>> fig.add_axes(axes)
>>
>> app = wx.PySimpleApp()
>> my_viewer = FigureFrameWxAgg(-1, fig)
>> my_viewer.Show()
>> app.MainLoop()
>>
>> If you uncomment axes.toggle_axisline(False), it works cause it uses
>> normal 'matplolib.axes.Axes' behaviour. It is not a matter for common
>> use but if you need 'AxesZero', this trick does not work.
>>      
> What the toggle_axisline does is simply to make the xaxis and yaxis
> (which are responsible for drawing ticks, ticklabels, etc  in the
> mainline mpl) visible again, and make axis["bottom"] and etc
> invisible.
> One workaround is to make xaxis and yaxis visible but pnly to draw the
> gridlines. Something like below.
>
> ax.toggle_axisline(True)
> ax.grid(True)
> ax.gridlines.set_visible(False) # this is just to make the code not to
> draw gridlines twice in future release of mpl.
> ax.xaxis.set_visible(True)
> ax.yaxis.set_visible(True)
> for t in ax.xaxis.majorTicks + ax.yaxis.majorTicks:
>      t.gridOn = True
>      t.tick1On = False
>      t.tick2On = False
>      t.label1On = False
>      t.label2On = False
>
> Let me know if this does not work, or there is a case that this cannot be used.
> Regards,
>
> -JJ
>
>
>    
>> Yann
>>
>>
>> On 09/07/2009 10:37 PM, Andreas Fromm wrote:
>>      
>>> thanks Sebastian,
>>>
>>> you are right, your code works here too. But i don't get it work in my
>>> multi y-axes plot from the matplotlib examples
>>> (http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes.html).
>>> Even with linear plots, i get no gridlines.
>>>
>>> Any idea, whats wrong here?
>>>
>>> minimal code example:
>>> #######################
>>> import matplotlib.pyplot as plt
>>> from mpl_toolkits.axes_grid.parasite_axes import HostAxes, ParasiteAxes
>>>
>>> fig = plt.figure(1)
>>> fig.clf()
>>> #plt.grid(True)
>>> host = HostAxes(fig, [0.15, 0.1, 0.65, 0.8])
>>> fig.add_axes(host)
>>>
>>> host.plot([0, 10, 100], [0, 10, 100], label='host')
>>>
>>> host.grid(True)  #?
>>> host.yaxis.grid(True) #?
>>>
>>> host.yaxis.set_scale('log') #?
>>>
>>> plt.draw()
>>> plt.show()
>>> #######################
>>>
>>> Greets,
>>> Andreas
>>>
>>>
>>> Sebastian Busch schrieb:
>>>
>>>        
>>>> from matplotlib.pyplot import *
>>>>
>>>> plot([1,10,100],[1,10,100])
>>>> grid()
>>>>
>>>> yscale('log')
>>>> xscale('log')
>>>>
>>>> works here.
>>>>
>>>> best,
>>>> sebastian.
>>>>
>>>>
>>>>          
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>>
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