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

Hi,

can anybody tell me how to get gridlines in a logarithmic plot?

i tried eg.:
loglog([1,10,100], [1,10,100])
grid(True)

but neither the grid is drawn, nor an error occur. When i make a linear 
plot, grid(True) works fine and draws the grid.

(win32, python 2.6, matplotlib 0.99)

Thanks

jihi wrote:
> ... can anybody tell me how to get gridlines in a logarithmic plot? ...
from matplotlib.pyplot import *

plot([1,10,100],[1,10,100])
grid()

yscale('log')
xscale('log')

works here.

best,
sebastian.

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.
>   

This is a bug in the axes_grid toolkit. As a matter of fact, gridlines
in rectlinear coordinate are not implemented yet.
Unfortunately, I don't see any easy workarounds.

You may use mpl's original axis artists, but some of the functionality
of axes_grid toolkit may be lost.

    host.toggle_axisline(False)
    host.yaxis.set_ticks_position("left")
    host.yaxis.grid()
    host.set_yscale("log")

With new spine support in mpl, I think a similar plot can be drawn
without using axes_grid toolkit.

Regards,

-JJ


On Mon, Sep 7, 2009 at 4:37 PM, Andreas Fromm<an...@gm...> 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.
>>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

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.
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.

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.
>>
>>      
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>    

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.
>>>
>>>
>> ------------------------------------------------------------------------------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
>> trial. Simplify your report design, integration and deployment - and focus on
>> what you do best, core application coding. Discover what's new with
>> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>
>
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Hi,

is it enough to overwrite the axesgrid.py file in my matplotlib 0.99 
installation with the file from svn? I tried that, but i see no effects. 
Are there anywhere precompiled matplotlib releases for 1.0_win32_pre?

Andreas


Jae-Joon Lee schrieb:
> 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.
>>>>
>>>>
>>>>         
>>> ------------------------------------------------------------------------------
>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
>>> trial. Simplify your report design, integration and deployment - and focus on
>>> what you do best, core application coding. Discover what's new with
>>> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>>       
>>
>>
>> ------------------------------------------------------------------------------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
>> trial. Simplify your report design, integration and deployment - and focus on
>> what you do best, core application coding. Discover what's new with
>> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>     
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
> trial. Simplify your report design, integration and deployment - and focus on 
> what you do best, core application coding. Discover what's new with 
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>   

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.
>>>>
>>>>
>>>>          
>>> ------------------------------------------------------------------------------
>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
>>> trial. Simplify your report design, integration and deployment - and focus on
>>> what you do best, core application coding. Discover what's new with
>>> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>>        
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
>> trial. Simplify your report design, integration and deployment - and focus on
>> what you do best, core application coding. Discover what's new with
>> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>      

On Wed, Sep 9, 2009 at 4:30 AM, Yann<ya...@al...> wrote:
> 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.

You can rearrange the order of artists by setting the zorder.

> As far as I am concerned, I can wait until matplotlib next release.

Just to clarify, the patch will be included in the 1.0 release, not
the maintenance release of 0.99 version.

Regards,

-JJ


>
> 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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