matplotlib-users Mailing List for matplotlib

If you have matplotlib v1.3 (maybe 1.2, I can't remember), you can pass a
list of axes to the "ax" argument of colorbar, and it should steal space
equally from all the specified axes.
I am also particularly fond of using the mpl_toolkit axis_grid1, which
provides you a nice way to preallocate space for colorbars in different
ways:
http://matplotlib.org/mpl_toolkits/axes_grid/users/overview.html?highlight=axes_grid1#axes-grid1
I hope that helps!
Ben Root
On Thu, Dec 11, 2014 at 1:49 PM, Slavin, Jonathan <js...@cf...>
wrote:
>
> Hi,
>
> I'm trying to make a plot with four panes (2x2). The two on top are
> images, created with pcolormesh, while the ones on the bottom are line
> plots. I'd like to the axes to line up -- which they do -- but when I add
> a colorbar to the top right, it steals space from the image plot. I only
> need one colorbar since the two images are forced to have the same
> scaling. Can anyone tell me how to insert the colorbar on the top right
> without it taking space from the top right image -- or force the space to
> be taken from the horizontal space of all the plots so the shapes are
> uniform? I've tried several approaches including using make_axes_locatable
> from mpl_toolkits.axes_grid1 with no success. I must admit that I don't
> really understand what make_axes_locatable does, so it may be entirely the
> wrong thing to use. On the other hand, not using it, i.e. just using
> plt.colorbar or fig.colorbar seems to do essentially the same thing, steal
> space from the axes. The basics of the plot are like this:
>
> x = np.arange(20.)
> xc = (x[:-1] + x[1:])/2.
> y = np.arange(15.)
> xx,yy = np.meshgrid(x,y)
> z1 = np.random.randn(14,19)
> z2 = np.random.randn(14,19)
>
> fig,ax = plt.subplots(2,2)
> pc = ax[0,0].pcolormesh(x,y,z1)
> ax[1,0].plot(xc,z1[0,:])
> ax[0,1].pcolormesh(x,y,z2)
> ax[1,1].plot(xc,z2[0,:])
> cb = plt.colorbar(pc, ax=ax[0,1])
> plt.show()
>
> Any help would be appreciated.
>
> Regards,
> Jon
> --
> ________________________________________________________
> Jonathan D. Slavin Harvard-Smithsonian CfA
> js...@cf... 60 Garden Street, MS 83
> phone: (617) 496-7981 Cambridge, MA 02138-1516
> fax: (617) 496-7577 USA
> ________________________________________________________
>
>
>
> ------------------------------------------------------------------------------
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>
>

Hi,
I'm trying to make a plot with four panes (2x2). The two on top are
images, created with pcolormesh, while the ones on the bottom are line
plots. I'd like to the axes to line up -- which they do -- but when I add
a colorbar to the top right, it steals space from the image plot. I only
need one colorbar since the two images are forced to have the same
scaling. Can anyone tell me how to insert the colorbar on the top right
without it taking space from the top right image -- or force the space to
be taken from the horizontal space of all the plots so the shapes are
uniform? I've tried several approaches including using make_axes_locatable
from mpl_toolkits.axes_grid1 with no success. I must admit that I don't
really understand what make_axes_locatable does, so it may be entirely the
wrong thing to use. On the other hand, not using it, i.e. just using
plt.colorbar or fig.colorbar seems to do essentially the same thing, steal
space from the axes. The basics of the plot are like this:
x = np.arange(20.)
xc = (x[:-1] + x[1:])/2.
y = np.arange(15.)
xx,yy = np.meshgrid(x,y)
z1 = np.random.randn(14,19)
z2 = np.random.randn(14,19)
fig,ax = plt.subplots(2,2)
pc = ax[0,0].pcolormesh(x,y,z1)
ax[1,0].plot(xc,z1[0,:])
ax[0,1].pcolormesh(x,y,z2)
ax[1,1].plot(xc,z2[0,:])
cb = plt.colorbar(pc, ax=ax[0,1])
plt.show()
Any help would be appreciated.
Regards,
Jon
-- 
________________________________________________________
Jonathan D. Slavin Harvard-Smithsonian CfA
js...@cf... 60 Garden Street, MS 83
phone: (617) 496-7981 Cambridge, MA 02138-1516
fax: (617) 496-7577 USA
________________________________________________________

Yes, this works fine:
import numpy as np
import matplotlib.pyplot as plt
eels= np.random.rand(12)
averspe = np.random.rand(12)
fig,azal = plt.subplots(1,1)
azal.locator_params(nbins=10)
azal.plot(eels, averspe, label='data')
Cheers, Jody
PS, easiest is to include self-contained examples. i.e. we don’t have "averspe" and "eels" so its hard for us to see what you are seeing. 
> On Dec 11, 2014, at 8:29 AM, Benjamin Root <ben...@ou...> wrote:
> 
> You need to do the azal.locator_params() call *after* you create azal. You would get errors otherwise.
> 
> Ben Root
> 
> On Thu, Dec 11, 2014 at 11:18 AM, Gabriele Brambilla <gb....@gm... <mailto:gb....@gm...>> wrote:
> Doing
> 
> azal.locator_params(nbins=4)
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
> 
> the program runs but locator_params doesn't do anything
> 
> doing:
> 
> azal.yaxis.locator_params(nbins=4)
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
> 
> it continue to say that yaxis has not this attribute.
> 
> Gabriele
> 
> On Thu, Dec 11, 2014 at 11:07 AM, Benjamin Root <ben...@ou... <mailto:ben...@ou...>> wrote:
> I wonder if setting the locator params prior to plotting would fix that?
> 
> Might be one of those rare situations where the order of commands matter in matplotlib.
> 
> Ben Root
> 
> On Thu, Dec 11, 2014 at 10:50 AM, Gabriele Brambilla <gb....@gm... <mailto:gb....@gm...>> wrote:
> Hi,
> 
> I already saw that stack overflow page but
> 
> this is my code:
> 
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
> 
> I tried to add both
> azal.yaxis.locator_params(nbins=4)
> or
> azal.locator_params(nbins=4)
> 
> and it doesn't work.
> 
> Gabriele
> 
> 
> On Thu, Dec 11, 2014 at 10:43 AM, Jody Klymak <jk...@uv... <mailto:jk...@uv...>> wrote:
> http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib <http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib>
> 
> is the easy way. You can also write your own "Locators" that are more sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but you’d prefer whole numbers, etc).
> 
> http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html <http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html>
> 
> Cheers, Jody
> 
>> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <gb....@gm... <mailto:gb....@gm...>> wrote:
>> 
>> Hi all,
>> 
>> I'm trying to set the NUMBER of ticks on a subplot axis.
>> Googling I'm finding only how to set the ticks values...but what if I don't know them and for visual reasons I would like to have a fixed number of ticks?
>> 
>> thanks
>> 
>> Gabriele
>> ------------------------------------------------------------------------------
>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>> Get technology previously reserved for billion-dollar corporations, FREE
>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________ <http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________>
>> Matplotlib-users mailing list
>> Mat...@li... <mailto:Mat...@li...>
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users <https://lists.sourceforge.net/lists/listinfo/matplotlib-users>
> 
> 
> 
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk <http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk>
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li... <mailto:Mat...@li...>
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users <https://lists.sourceforge.net/lists/listinfo/matplotlib-users>
> 
> 
--
Jody Klymak 
http://web.uvic.ca/~jklymak/

glue does a lot of fancy interactive stuff, they might have something like
that.
>From a reproducible computing PoV that functionality is a bit of a problem
until we have a way to serialize figures.
It is looking more and more like that is what I will be doing over the
holidays....
Tom
On Thu Dec 11 2014 at 11:39:29 AM Benjamin Root <ben...@ou...> wrote:
> Plans? No. This is the first I have ever heard of such a feature. You
> could always add a feature request for it (this is a community-developed
> tool). It might even fold in nicely with the MEP22 work going on to
> refactor our interactivity and make it easier to add tools.
>
> Keep in mind that Matplotlib is not the end-all-be-all of plotting in
> Python. There are a bunch of other tools that build off of matplotlib to
> add more features and functionality. A bunch off the top of my head are:
> bokeh, seaborn, mpldatacursor. There are a few others, but their names
> aren't coming to me right now.
>
> Cheers!
> Ben Root
>
>
> On Thu, Dec 11, 2014 at 11:28 AM, Julien Hillairet <
> jul...@gm...> wrote:
>>
>> Dear all,
>>
>> We're, at our lab, trying to (slowly) make the transition from a famous
>> (but expansive) numerical software to Python.
>>
>> The most recurring remark made against the use of Python/Matplotlib
>> instead of this famous software is the fact that one cannot male simple
>> click/copy/paste of a curve from a figure into another.
>>
>> I guess this heavily depends of the backend used, or of the OS. So my
>> question is probably naive, but anyway :
>> is there a plan to add an interactive way to select one or more curves
>> from a matplotlib figure and to copy/paste them into a another figure ?
>>
>> It is, I think, a killing feature for many beginners/average users who
>> used to work with matlab (oups, I've said it).
>>
>> Best regards,
>>
>> Julien
>>
>>
>>
>> ------------------------------------------------------------
>> ------------------
>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>> Get technology previously reserved for billion-dollar corporations, FREE
>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&
>> iu=/4140/ostg.clktrk
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>> ------------------------------------------------------------
> ------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/
> 4140/ostg.clktrk_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Plans? No. This is the first I have ever heard of such a feature. You could
always add a feature request for it (this is a community-developed tool).
It might even fold in nicely with the MEP22 work going on to refactor our
interactivity and make it easier to add tools.
Keep in mind that Matplotlib is not the end-all-be-all of plotting in
Python. There are a bunch of other tools that build off of matplotlib to
add more features and functionality. A bunch off the top of my head are:
bokeh, seaborn, mpldatacursor. There are a few others, but their names
aren't coming to me right now.
Cheers!
Ben Root
On Thu, Dec 11, 2014 at 11:28 AM, Julien Hillairet <
jul...@gm...> wrote:
>
> Dear all,
>
> We're, at our lab, trying to (slowly) make the transition from a famous
> (but expansive) numerical software to Python.
>
> The most recurring remark made against the use of Python/Matplotlib
> instead of this famous software is the fact that one cannot male simple
> click/copy/paste of a curve from a figure into another.
>
> I guess this heavily depends of the backend used, or of the OS. So my
> question is probably naive, but anyway :
> is there a plan to add an interactive way to select one or more curves
> from a matplotlib figure and to copy/paste them into a another figure ?
>
> It is, I think, a killing feature for many beginners/average users who
> used to work with matlab (oups, I've said it).
>
> Best regards,
>
> Julien
>
>
>
>
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
>
> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>

You need to do the azal.locator_params() call *after* you create azal. You
would get errors otherwise.
Ben Root
On Thu, Dec 11, 2014 at 11:18 AM, Gabriele Brambilla <
gb....@gm...> wrote:
>
> Doing
>
> azal.locator_params(nbins=4)
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
>
> the program runs but locator_params doesn't do anything
>
> doing:
>
> azal.yaxis.locator_params(nbins=4)
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
>
> it continue to say that yaxis has not this attribute.
>
> Gabriele
>
> On Thu, Dec 11, 2014 at 11:07 AM, Benjamin Root <ben...@ou...> wrote:
>
>> I wonder if setting the locator params prior to plotting would fix that?
>>
>> Might be one of those rare situations where the order of commands matter
>> in matplotlib.
>>
>> Ben Root
>>
>> On Thu, Dec 11, 2014 at 10:50 AM, Gabriele Brambilla <
>> gb....@gm...> wrote:
>>>
>>> Hi,
>>>
>>> I already saw that stack overflow page but
>>>
>>> this is my code:
>>>
>>> azal = rif.add_subplot(111)
>>> azal.plot(eels*(10**9), averspe, label='data')
>>> azal.plot(eels*(10**9), beck, label='fit')
>>>
>>> I tried to add both
>>> azal.yaxis.locator_params(nbins=4)
>>> or
>>> azal.locator_params(nbins=4)
>>>
>>> and it doesn't work.
>>>
>>> Gabriele
>>>
>>>
>>> On Thu, Dec 11, 2014 at 10:43 AM, Jody Klymak <jk...@uv...> wrote:
>>>
>>>>
>>>> http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib
>>>>
>>>> is the easy way. You can also write your own "Locators" that are more
>>>> sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but
>>>> you’d prefer whole numbers, etc).
>>>>
>>>>
>>>> http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html
>>>>
>>>> Cheers, Jody
>>>>
>>>> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <
>>>> gb....@gm...> wrote:
>>>>
>>>> Hi all,
>>>>
>>>> I'm trying to set the NUMBER of ticks on a subplot axis.
>>>> Googling I'm finding only how to set the ticks values...but what if I
>>>> don't know them and for visual reasons I would like to have a fixed number
>>>> of ticks?
>>>>
>>>> thanks
>>>>
>>>> Gabriele
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>>>> with Interactivity, Sharing, Native Excel Exports, App Integration &
>>>> more
>>>> Get technology previously reserved for billion-dollar corporations, FREE
>>>>
>>>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________
>>>> Matplotlib-users mailing list
>>>> Mat...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>>
>>>>
>>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>>> Get technology previously reserved for billion-dollar corporations, FREE
>>>
>>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>>
>

Dear all,
We're, at our lab, trying to (slowly) make the transition from a famous
(but expansive) numerical software to Python.
The most recurring remark made against the use of Python/Matplotlib instead
of this famous software is the fact that one cannot male simple
click/copy/paste of a curve from a figure into another.
I guess this heavily depends of the backend used, or of the OS. So my
question is probably naive, but anyway :
is there a plan to add an interactive way to select one or more curves from
a matplotlib figure and to copy/paste them into a another figure ?
It is, I think, a killing feature for many beginners/average users who used
to work with matlab (oups, I've said it).
Best regards,
Julien

This guy helped me
http://stackoverflow.com/questions/27425974/change-ticks-number-on-a-subplot/27426087?noredirect=1#comment43295472_27426087
thanks anyway
Gabriele
On Thu, Dec 11, 2014 at 11:18 AM, Gabriele Brambilla <
gb....@gm...> wrote:
> Doing
>
> azal.locator_params(nbins=4)
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
>
> the program runs but locator_params doesn't do anything
>
> doing:
>
> azal.yaxis.locator_params(nbins=4)
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
>
> it continue to say that yaxis has not this attribute.
>
> Gabriele
>
> On Thu, Dec 11, 2014 at 11:07 AM, Benjamin Root <ben...@ou...> wrote:
>
>> I wonder if setting the locator params prior to plotting would fix that?
>>
>> Might be one of those rare situations where the order of commands matter
>> in matplotlib.
>>
>> Ben Root
>>
>> On Thu, Dec 11, 2014 at 10:50 AM, Gabriele Brambilla <
>> gb....@gm...> wrote:
>>>
>>> Hi,
>>>
>>> I already saw that stack overflow page but
>>>
>>> this is my code:
>>>
>>> azal = rif.add_subplot(111)
>>> azal.plot(eels*(10**9), averspe, label='data')
>>> azal.plot(eels*(10**9), beck, label='fit')
>>>
>>> I tried to add both
>>> azal.yaxis.locator_params(nbins=4)
>>> or
>>> azal.locator_params(nbins=4)
>>>
>>> and it doesn't work.
>>>
>>> Gabriele
>>>
>>>
>>> On Thu, Dec 11, 2014 at 10:43 AM, Jody Klymak <jk...@uv...> wrote:
>>>
>>>>
>>>> http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib
>>>>
>>>> is the easy way. You can also write your own "Locators" that are more
>>>> sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but
>>>> you’d prefer whole numbers, etc).
>>>>
>>>>
>>>> http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html
>>>>
>>>> Cheers, Jody
>>>>
>>>> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <
>>>> gb....@gm...> wrote:
>>>>
>>>> Hi all,
>>>>
>>>> I'm trying to set the NUMBER of ticks on a subplot axis.
>>>> Googling I'm finding only how to set the ticks values...but what if I
>>>> don't know them and for visual reasons I would like to have a fixed number
>>>> of ticks?
>>>>
>>>> thanks
>>>>
>>>> Gabriele
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>>>> with Interactivity, Sharing, Native Excel Exports, App Integration &
>>>> more
>>>> Get technology previously reserved for billion-dollar corporations, FREE
>>>>
>>>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________
>>>> Matplotlib-users mailing list
>>>> Mat...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>>
>>>>
>>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>>> Get technology previously reserved for billion-dollar corporations, FREE
>>>
>>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>>
>

Doing
azal.locator_params(nbins=4)
azal = rif.add_subplot(111)
azal.plot(eels*(10**9), averspe, label='data')
azal.plot(eels*(10**9), beck, label='fit')
the program runs but locator_params doesn't do anything
doing:
azal.yaxis.locator_params(nbins=4)
azal = rif.add_subplot(111)
azal.plot(eels*(10**9), averspe, label='data')
azal.plot(eels*(10**9), beck, label='fit')
it continue to say that yaxis has not this attribute.
Gabriele
On Thu, Dec 11, 2014 at 11:07 AM, Benjamin Root <ben...@ou...> wrote:
> I wonder if setting the locator params prior to plotting would fix that?
>
> Might be one of those rare situations where the order of commands matter
> in matplotlib.
>
> Ben Root
>
> On Thu, Dec 11, 2014 at 10:50 AM, Gabriele Brambilla <
> gb....@gm...> wrote:
>>
>> Hi,
>>
>> I already saw that stack overflow page but
>>
>> this is my code:
>>
>> azal = rif.add_subplot(111)
>> azal.plot(eels*(10**9), averspe, label='data')
>> azal.plot(eels*(10**9), beck, label='fit')
>>
>> I tried to add both
>> azal.yaxis.locator_params(nbins=4)
>> or
>> azal.locator_params(nbins=4)
>>
>> and it doesn't work.
>>
>> Gabriele
>>
>>
>> On Thu, Dec 11, 2014 at 10:43 AM, Jody Klymak <jk...@uv...> wrote:
>>
>>>
>>> http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib
>>>
>>> is the easy way. You can also write your own "Locators" that are more
>>> sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but
>>> you’d prefer whole numbers, etc).
>>>
>>>
>>> http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html
>>>
>>> Cheers, Jody
>>>
>>> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <
>>> gb....@gm...> wrote:
>>>
>>> Hi all,
>>>
>>> I'm trying to set the NUMBER of ticks on a subplot axis.
>>> Googling I'm finding only how to set the ticks values...but what if I
>>> don't know them and for visual reasons I would like to have a fixed number
>>> of ticks?
>>>
>>> thanks
>>>
>>> Gabriele
>>>
>>> ------------------------------------------------------------------------------
>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
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>>>
>>>
>>
>>
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I would just call use `plot` and keep track of the Line2D objects returned.
On Thu Dec 11 2014 at 10:40:05 AM Nils Wagner <ni...@go...>
wrote:
> Hi Ben,
>
> I have attached a sample scatter plot. The task is to add lines to the
> scatter plot.
>
> Nils
>
>
> On Thu, Dec 11, 2014 at 3:47 PM, Benjamin Root <ben...@ou...> wrote:
>
>> Nils,
>>
>> Perhaps the rectangle selector might be of use? It defaults to a draw
>> mode of 'box', but you can set it to line so that it looks like a ruler
>> widget.
>> http://matplotlib.org/api/widgets_api.html#matplotlib.
>> widgets.RectangleSelector
>>
>> I can imagine that you could set up a selector callback that could then
>> query the data on the graph to "snap" the final line to the nearest points
>> on the graph, creating a Line2D object on the fly. Is that what you are
>> looking for?
>>
>> Cheers!
>> Ben Root
>>
>>
>>
>> On Thu, Dec 11, 2014 at 8:47 AM, Nils Wagner <ni...@go...>
>> wrote:
>>>
>>> Hi all,
>>>
>>> how can I create line segments between consecutive selected points of a
>>> scatter plot in an interactive manner ? It should be possible to create
>>> several unclosed polygonal lines. Each polygonal line might have
>>> a different color.
>>>
>>> A small example is appreciated.
>>>
>>> Thanks in advance.
>>>
>>>
>>>
>>>
>>>
>>> --
>>> View this message in context: http://matplotlib.1069221.n5.
>>> nabble.com/line-segments-in-a-scatter-plot-tp44602.html
>>> Sent from the matplotlib - users mailing list archive at Nabble.com.
>>>
>>> ------------------------------------------------------------
>>> ------------------
>>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>>> Get technology previously reserved for billion-dollar corporations, FREE
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>>> iu=/4140/ostg.clktrk
>>> _______________________________________________
>>> Matplotlib-users mailing list
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>>>
>>
> ------------------------------------------------------------
> ------------------
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>

I wonder if setting the locator params prior to plotting would fix that?
Might be one of those rare situations where the order of commands matter in
matplotlib.
Ben Root
On Thu, Dec 11, 2014 at 10:50 AM, Gabriele Brambilla <
gb....@gm...> wrote:
>
> Hi,
>
> I already saw that stack overflow page but
>
> this is my code:
>
> azal = rif.add_subplot(111)
> azal.plot(eels*(10**9), averspe, label='data')
> azal.plot(eels*(10**9), beck, label='fit')
>
> I tried to add both
> azal.yaxis.locator_params(nbins=4)
> or
> azal.locator_params(nbins=4)
>
> and it doesn't work.
>
> Gabriele
>
>
> On Thu, Dec 11, 2014 at 10:43 AM, Jody Klymak <jk...@uv...> wrote:
>
>>
>> http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib
>>
>> is the easy way. You can also write your own "Locators" that are more
>> sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but
>> you’d prefer whole numbers, etc).
>>
>> http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html
>>
>> Cheers, Jody
>>
>> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <
>> gb....@gm...> wrote:
>>
>> Hi all,
>>
>> I'm trying to set the NUMBER of ticks on a subplot axis.
>> Googling I'm finding only how to set the ticks values...but what if I
>> don't know them and for visual reasons I would like to have a fixed number
>> of ticks?
>>
>> thanks
>>
>> Gabriele
>>
>> ------------------------------------------------------------------------------
>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>> Get technology previously reserved for billion-dollar corporations, FREE
>>
>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>
>>
>
>
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
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> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>

Hi,
I already saw that stack overflow page but
this is my code:
azal = rif.add_subplot(111)
azal.plot(eels*(10**9), averspe, label='data')
azal.plot(eels*(10**9), beck, label='fit')
I tried to add both
azal.yaxis.locator_params(nbins=4)
or
azal.locator_params(nbins=4)
and it doesn't work.
Gabriele
On Thu, Dec 11, 2014 at 10:43 AM, Jody Klymak <jk...@uv...> wrote:
>
> http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib
>
> is the easy way. You can also write your own "Locators" that are more
> sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but
> you’d prefer whole numbers, etc).
>
> http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html
>
> Cheers, Jody
>
> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <
> gb....@gm...> wrote:
>
> Hi all,
>
> I'm trying to set the NUMBER of ticks on a subplot axis.
> Googling I'm finding only how to set the ticks values...but what if I
> don't know them and for visual reasons I would like to have a fixed number
> of ticks?
>
> thanks
>
> Gabriele
>
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
>
> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
>

http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib <http://stackoverflow.com/questions/6682784/how-to-reduce-number-of-ticks-with-matplotlib>
is the easy way. You can also write your own "Locators" that are more sophisticated if you have some ideas in mind (i.e. close to 5 ticks, but you’d prefer whole numbers, etc).
http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html <http://matplotlib.org/1.4.2/examples/pylab_examples/major_minor_demo1.html>
Cheers, Jody
> On Dec 11, 2014, at 6:29 AM, Gabriele Brambilla <gb....@gm...> wrote:
> 
> Hi all,
> 
> I'm trying to set the NUMBER of ticks on a subplot axis.
> Googling I'm finding only how to set the ticks values...but what if I don't know them and for visual reasons I would like to have a fixed number of ticks?
> 
> thanks
> 
> Gabriele
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hi Ben,
I have attached a sample scatter plot. The task is to add lines to the
scatter plot.
Nils
On Thu, Dec 11, 2014 at 3:47 PM, Benjamin Root <ben...@ou...> wrote:
> Nils,
>
> Perhaps the rectangle selector might be of use? It defaults to a draw mode
> of 'box', but you can set it to line so that it looks like a ruler widget.
>
> http://matplotlib.org/api/widgets_api.html#matplotlib.widgets.RectangleSelector
>
> I can imagine that you could set up a selector callback that could then
> query the data on the graph to "snap" the final line to the nearest points
> on the graph, creating a Line2D object on the fly. Is that what you are
> looking for?
>
> Cheers!
> Ben Root
>
>
>
> On Thu, Dec 11, 2014 at 8:47 AM, Nils Wagner <ni...@go...>
> wrote:
>>
>> Hi all,
>>
>> how can I create line segments between consecutive selected points of a
>> scatter plot in an interactive manner ? It should be possible to create
>> several unclosed polygonal lines. Each polygonal line might have
>> a different color.
>>
>> A small example is appreciated.
>>
>> Thanks in advance.
>>
>>
>>
>>
>>
>> --
>> View this message in context:
>> http://matplotlib.1069221.n5.nabble.com/line-segments-in-a-scatter-plot-tp44602.html
>> Sent from the matplotlib - users mailing list archive at Nabble.com.
>>
>>
>> ------------------------------------------------------------------------------
>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
>> with Interactivity, Sharing, Native Excel Exports, App Integration & more
>> Get technology previously reserved for billion-dollar corporations, FREE
>>
>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>

Nils,
Perhaps the rectangle selector might be of use? It defaults to a draw mode
of 'box', but you can set it to line so that it looks like a ruler widget.
http://matplotlib.org/api/widgets_api.html#matplotlib.widgets.RectangleSelector
I can imagine that you could set up a selector callback that could then
query the data on the graph to "snap" the final line to the nearest points
on the graph, creating a Line2D object on the fly. Is that what you are
looking for?
Cheers!
Ben Root
On Thu, Dec 11, 2014 at 8:47 AM, Nils Wagner <ni...@go...> wrote:
>
> Hi all,
>
> how can I create line segments between consecutive selected points of a
> scatter plot in an interactive manner ? It should be possible to create
> several unclosed polygonal lines. Each polygonal line might have
> a different color.
>
> A small example is appreciated.
>
> Thanks in advance.
>
>
>
>
>
> --
> View this message in context:
> http://matplotlib.1069221.n5.nabble.com/line-segments-in-a-scatter-plot-tp44602.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
> from Actuate! Instantly Supercharge Your Business Reports and Dashboards
> with Interactivity, Sharing, Native Excel Exports, App Integration & more
> Get technology previously reserved for billion-dollar corporations, FREE
>
> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Hi all,
I'm trying to set the NUMBER of ticks on a subplot axis.
Googling I'm finding only how to set the ticks values...but what if I don't
know them and for visual reasons I would like to have a fixed number of
ticks?
thanks
Gabriele

Hi all,
how can I create line segments between consecutive selected points of a
scatter plot in an interactive manner ? It should be possible to create
several unclosed polygonal lines. Each polygonal line might have
a different color.
A small example is appreciated.
Thanks in advance.
--
View this message in context: http://matplotlib.1069221.n5.nabble.com/line-segments-in-a-scatter-plot-tp44602.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

It appears you have come across a bug. As a work-around, try adding
"use_gridspec=False" to your call to fig.colorbar(). It looks like the
gridspec version of colorbars is not popping off the anchor (or panchor)
arguments and simply using hardcoded defaults. Those extra keyword
arguments get passed on to the colorbar factory function, which doesn't
recognize it and throws an exception. The gridspec code needs to pop off
the argurments, even if it isn't going to use them.
Ben Root
On Wed, Dec 10, 2014 at 6:06 PM, Yilong Wang <wan...@gm...> wrote:
> Hi all,
> I am using matplotlib-1.4.2, but when I try to plot a colorbar and define
> its position using argument 'anchor', it raises an error:
> TypeError: __init__() got an unexpected keyword argument 'anchor'
> Does anyone have any clue for this?
> Thank you very much!
>
> The test script is as follows:
>
> import numpy as np
> import matplotlib.pyplot as plt
>
> a=np.random.randn(100,150)
> fig,ax=plt.subplots()
> im=ax.imshow(a)
> fig.colorbar(im,anchor=(0.,0.5))
> plt.show()
>
>
>
> --
> View this message in context:
> http://matplotlib.1069221.n5.nabble.com/Missing-anchor-for-colorbar-tp44594.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
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>